CN119447815A

CN119447815A - Antenna components and electronic equipment

Info

Publication number: CN119447815A
Application number: CN202310956948.3A
Authority: CN
Inventors: 张云帆; 李宗尚
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2025-02-14

Abstract

The present application provides an antenna assembly and an electronic device. The antenna assembly includes: a first radiator and a first feed source, the first feed source is connected to a first feeding point located on the first radiator, and the first feed source excites the first radiator to resonate in a first target frequency band; a second radiator, a second feed source, and an adjustment circuit, the second feed source and the adjustment circuit are respectively connected to a second feeding point and a third feeding point located on the second radiator, the second radiator is coupled to the first radiator through a gap between the second free end and the first free end, the second feed source excites the second radiator and/or the first radiator to resonate in a second target frequency band, and the adjustment circuit is used to adjust the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the second target frequency band is different from the path of the resonant current corresponding to the first target frequency band, effectively improving the radiation efficiency of the first target frequency band and the second target frequency band, thereby improving the communication performance.

Description

Antenna assembly and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to an antenna assembly and an electronic device.

Background

With the development of communication technology, a plurality of antennas are required to be arranged in an electronic device such as a mobile phone. With the miniaturization development of electronic devices such as mobile phones and the like and the strong communication functions, how to arrange multiple antennas in a smaller space becomes a key problem.

The related art proposes an antenna assembly in which a plurality of antennas can be provided in a common form to compress the space occupied by the antennas while achieving multi-functional wireless communication. The communication performance of the antenna assembly in the related art needs to be further improved.

Disclosure of Invention

The application provides an antenna assembly and electronic equipment. Various aspects of embodiments of the application are described below.

The first antenna unit comprises a first radiator and a first feed source, wherein the first radiator is provided with a first grounding end, a first free end and a first feed point, the first feed point is located between the first grounding end and the first free end, the first feed source is connected with the first feed point, the first feed source excites the first radiator to resonate in a first target frequency band, the second antenna unit comprises a second radiator, a second feed source and a regulating circuit, the second radiator is provided with a second grounding end and a second free end, the second free end and the first free end are arranged at intervals to form a gap, the second radiator and the first radiator are coupled through the gap, the second radiator is further provided with a second feed point and a third feed point, the second feed point and the third feed point are located between the second free end and the second grounding end, the second feed source is connected with the second feed source, the second feed source corresponds to a resonant frequency band or a current regulating path, and the resonant frequency band corresponds to the second feed point and the second feed source, the resonant frequency band is not connected with the first feed path, and the resonant frequency band is adjusted, and the current path corresponds to the resonant frequency band.

In a second aspect, there is provided an electronic device comprising an antenna assembly as described in the first aspect.

The embodiment of the application provides an antenna assembly, which comprises a first antenna unit and a second antenna unit, wherein the first antenna unit comprises a first radiator and a first feed source, the first feed source is connected with a first feed point positioned between a first grounding end and a first free end of the first radiator, the first feed source excites the first radiator to resonate in a first target frequency band, the second antenna unit comprises a second radiator, a second feed source and an adjusting circuit, the second feed source and the adjusting circuit are respectively connected with a second feed point and a third feed point positioned between a second free end and a second grounding end of the second radiator, the second radiator and the first radiator are coupled through a gap between the second free end and the first free end, the second feed source excites the second radiator and/or the first radiator to resonate in a second target frequency band, the adjusting circuit is used for adjusting and controlling the path length of resonant current corresponding to the second target frequency band, and the path of resonant current corresponding to the first target frequency band is different from the path of resonant current corresponding to the second target frequency band. The antenna assembly is small in size and small in occupied space, and can effectively improve the radiation efficiency of the first target frequency band and the second target frequency band, so that the communication performance is improved.

Drawings

Fig. 1 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application.

Fig. 2 is a graph of S parameters of ANT1 in fig. 1.

Fig. 3 (a) is a schematic diagram of one resonance mode of the ANT1 of fig. 1.

Fig. 3 (b) is a schematic diagram of another resonance mode of the ANT1 of fig. 1.

Fig. 3 (c) is a schematic diagram of another resonance mode of the ANT1 of fig. 1.

Fig. 4 is a graph of S parameters of ANT2 in fig. 1.

Fig. 5 (a) is a schematic diagram of one resonance mode of the ANT2 of fig. 1.

Fig. 5 (b) is a schematic diagram of another resonance mode of the ANT2 of fig. 1.

Fig. 5 (c) is a schematic diagram of another resonance mode of the ANT2 of fig. 1.

Fig. 5 (d) is a schematic diagram of another resonance mode of the ANT2 of fig. 1.

Fig. 5 (e) is a schematic diagram of another resonance mode of the ANT2 of fig. 1.

Fig. 5 (f) is a schematic diagram of another resonance mode of the ANT2 of fig. 1.

Fig. 5 (g) is a schematic diagram of another resonance mode of the ANT2 of fig. 1.

Fig. 5 (h) is a schematic diagram of another resonance mode of the ANT2 of fig. 1.

Fig. 6 is a graph of S parameters of ANT3 in fig. 1.

Fig. 7 is a schematic structural diagram of an antenna assembly according to another embodiment of the present application.

Fig. 8 is a graph of S parameters of ANT1' in fig. 7.

Fig. 9 (a) is a schematic diagram of one resonance mode of ANT1' in fig. 7.

Fig. 9 (b) is a schematic diagram of another resonance mode of ANT1' in fig. 7.

Fig. 10 is a graph of S parameters of ANT2' in fig. 7.

Fig. 11 (a) is a schematic diagram of one resonance mode of ANT2' in fig. 7.

Fig. 11 (b) is a schematic diagram of another resonance mode of ANT2' in fig. 7.

Fig. 11 (c) is a schematic diagram of another resonance mode of ANT2' in fig. 7.

Fig. 11 (d) is a schematic diagram of another resonance mode of ANT2' in fig. 7.

Fig. 11 (e) is a schematic diagram of another resonance mode of ANT2' in fig. 7.

Fig. 12 is a graph of S parameters of ANT3' in fig. 7.

Fig. 13 is a simulation diagram of the system radiation efficiency and the overall system efficiency of the antenna assembly of fig. 7.

Fig. 14 is a schematic structural diagram of an antenna assembly according to another embodiment.

Fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 16 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.

With the development of electronic technology, electronic devices (such as smartphones, tablet computers, etc.) have become more popular and have more powerful communication functions in people's daily lives. For example, the electronic device needs to have a near field communication function, a navigation function, and a far field communication function. Since different communication functions correspond to different communication frequency bands, the communication frequency band can be subdivided into a plurality of communication frequency bands even under the same communication function.

For example, the communication band of the near field communication function may include a bluetooth communication band, a WIFI band, and an NFC communication band. The WIFI frequency bands may include WIFI2.4G frequency bands and WIFI5G frequency bands. The communication bands of the navigation function may include a GPS-L1 band and a GPS-L5 band. The far-field communication frequency band includes a Low frequency band (LB), a middle-high frequency band (MIDDLE HIGH b) and an Ultra high frequency band (UHB), and in particular, the far-field communication frequency band may include various frequency bands of an NR frequency band and an LTE frequency band and a combined frequency band to satisfy wireless communication of the electronic device under 2G, 3G, 4G, 5G, and even 6G broadband. The UHB bands may include an N78 band and an N77 band, among others.

In view of the requirement of operating in multiple frequency bands in an electronic device, a common way is to provide multiple antennas corresponding to the multiple frequency bands in the electronic device. However, providing a plurality of antennas may require a large space, which is disadvantageous in terms of miniaturization and portability of the electronic device. Therefore, a technology of arranging a plurality of antennas for realizing a plurality of wireless communication functions in a small space is demanded.

It is proposed in the related art that the functions of a plurality of antennas can be implemented using antenna assemblies in a common form. The radiator of the common antenna can realize the common body of a plurality of different antenna modes, different antenna modes can meet different communication functions, and the common body form also reduces the occupation space of the antenna component.

However, how to arrange the antenna assembly in a common form to cover more frequency bands and reduce the space occupied by the antenna assembly is a technical problem to be solved.

As a possible way, as shown in fig. 1, the antenna assembly 10 may be arranged to comprise a first antenna element 11 and a second antenna element 12. The first antenna element 11 comprises a first radiator 111 and a first feed 112. The second antenna element 12 comprises a second radiator 121, a second feed 122 and a third feed 123. A slot 13 is formed between the first radiator 111 and the second radiator 121, and the first radiator 111 and the second radiator 121 are coupled through the slot 13, so as to realize that the first antenna unit 11 and the second antenna unit 12 are a common-caliber common-body antenna. In other words, the first radiator 111 and the second radiator 121 belong to the same radiator, and the one radiator has a slit 13 to divide the one radiator into the first radiator 111 and the second radiator 121. The first antenna element 11 or the second antenna element 12 formed as a common body antenna may use not only the radiator itself but also the radiator on the opposite side when operating. Meanwhile, the antenna assembly 10 can realize multi-band signal transmission in cooperation with different radio frequency signals (also called feed current or exciting current) received or transmitted by the first feed 112, the second feed 122 and the third feed 123.

It should be noted that the coupling in the embodiment of the present application is "capacitive coupling". By "capacitive coupling" is meant that an electric field is generated between two radiators, the signal of one radiator can be transferred to the other radiator by the electric field, and correspondingly, the signal of the other radiator can be transferred to one radiator by the electric field, so that the two radiators can realize the conduction of an electric signal even under the condition that the two radiators are not in direct contact or are not directly connected. For example, the coupling of the second radiator 121 with the first radiator 111 through the slit 13 means that the second radiator 121 generates an electric field with the first radiator 111, and a signal of the second radiator 121 can be transmitted to the first radiator 111 through the electric field, so that the second radiator 121 and the first radiator 111 can be conducted by an electric signal even without direct contact or direct connection. Accordingly, the first radiator 111 may generate an electric field with the second radiator 121, and a signal of the first radiator 111 may be transmitted to the second radiator 121 through the electric field, so that the first radiator 111 and the second radiator 121 may be electrically connected even without direct contact or direct connection.

Specifically, as shown in fig. 1, the first radiator 111 has a first ground terminal D, a first free terminal C, and a first feeding point E thereon. The first ground D is located at an end of the first radiator 111 away from the second radiator 121 and is used for grounding GND1. The first free end C is located at an end of the first radiator 111 near the second radiator 121. The first feed point E is located between the first ground terminal D and the first free terminal C, and the first feed 112 is connected to the first feed point E. The radio frequency signal received or transmitted by the first feed 112 may excite the first radiator 111 and/or the second radiator 121 to resonate at the first target frequency band. The first feed 112 corresponds to an antenna ANT1, the antenna ANT1 having a resonant mode corresponding to a first target frequency band.

Optionally, a first matching circuit M1 may be further disposed between the first feed source 112 and the first feed point E, where the first matching circuit M1 is configured to perform impedance matching on an excitation signal sent by the first feed source 112, so as to excite the first radiator 111 and/or the second radiator to resonate in the first target frequency band, so that an antenna ANT1 corresponding to the first feed source 112 has a preset S parameter. Meanwhile, the first matching circuit M1 is further configured to filter the radio frequency signal received or transmitted by the first feed source 112.

With continued reference to fig. 1, the second radiator 121 has a second ground terminal H, a second free terminal I, a second feeding point F, and a third feeding point G. The second ground H is located at an end of the second radiator 121 remote from the first radiator 111 and is connected to the ground GND 2. The second free end I is located at an end of the second radiator 121 near the first radiator 111 with the gap 13 between the second free end I and the first free end C. The second feeding point F and the third feeding point G are located between the second ground terminal H and the second free terminal I.

The second feed source 122 is connected to the second feed point F, and the radio frequency signal received or transmitted by the second feed source 122 may excite the first radiator 111 and/or the second radiator 121 to resonate in the second target frequency band. The second feed 122 corresponds to the antenna ANT2, and the antenna ANT2 has a resonant mode corresponding to the second target frequency band.

Optionally, a second matching circuit M2 may be further disposed between the second feed 122 and the second feed point F, where the second matching circuit M2 is configured to filter the radio frequency signal received or transmitted by the second feed 122. The second matching circuit M2 is further configured to perform impedance matching on the excitation signal sent by the second feed source 122, so as to excite the first radiator 111 and/or the second radiator to resonate in the second target frequency band, thereby enabling the antenna ANT2 corresponding to the second feed source 122 to have a preset S parameter.

The radio frequency signals received or transmitted by the first feed 112 may excite the first radiator 111 and/or the second radiator 121 to resonate, which may include the radio frequency signals received or transmitted by the first feed 112 excite only the first radiator 111 to resonate, and/or the radio frequency signals received or transmitted by the first feed 112 excite only the second radiator 121 to parasitic resonate, and/or the radio frequency signals received or transmitted by the first feed 112 excite the first radiator 111 to resonate and excite the second radiator 121 to parasitic resonate.

Similarly, the radio frequency signals received or transmitted by the second feed 122 may excite the first radiator 111 and/or the second radiator 121 to resonate, including the radio frequency signals received or transmitted by the second feed 122 excite only the second radiator 121 to resonate, and/or the radio frequency signals received or transmitted by the second feed 122 excite only the first radiator 111 to parasitic resonate, and/or the radio frequency signals received or transmitted by the second feed 122 excite the second radiator 121 to resonate and excite the first radiator 111 to parasitic resonate.

With continued reference to fig. 1, the third feed source 123 is connected to the third feeding point G, and the radio frequency signal received or transmitted by the third feed source 123 may excite the second radiator 121 to resonate in the third target frequency band. The third feed 123 corresponds to the antenna ANT3, and the antenna ANT3 has a resonant mode corresponding to a third target frequency band.

Optionally, a third matching circuit M3 may be further disposed between the third feed source 123 and the third feed point G, where the third matching circuit M3 is configured to perform impedance matching on an excitation signal sent by the third feed source 123, so as to excite the second radiator 121 to resonate in a third target frequency band, so that an antenna ANT3 corresponding to the third feed source 123 has a preset S parameter. In addition, the third matching circuit M3 is further configured to filter the radio frequency signal received or transmitted by the third feed source 123. .

In some embodiments, as shown in fig. 1, the first ground D may be grounded GND1 through the switch circuit M4, in other words, one end of the switch circuit M4 is connected to the first ground D, and the other end is connected to the ground GND 1. The switching circuit M4 is used for switching the radiation frequency band of the first radiator 111 and/or filtering and grounding the first radiator 111. In some embodiments, the switching circuit M4 may be connected with the motherboard.

The manner in which the first ground terminal D is connected to the ground GND1 and the second ground terminal H is connected to the ground GND2 is not particularly limited in the embodiment of the present application. For example, the connection between the ground terminal D or H and the ground may include, but is not limited to, direct electrical connection (such as soldering), or indirect electrical connection via coaxial lines, microstrip lines, RF lines, conductive clips, conductive adhesives, embedded metal, or a center frame connection of an electronic device in which the antenna assembly is mounted.

In another embodiment, the antenna assembly 10 itself has a reference ground, also referred to as ground pole or ground. Specific forms of the reference ground include, but are not limited to, a metal conductive plate, a metal conductive layer molded into the interior of a flexible circuit board, in a rigid circuit board, and the like. When the antenna assembly 10 is disposed within the electronic device, the reference of the antenna assembly 10 is electrically connected to the reference ground of the electronic device. In other embodiments, the antenna assembly 10 itself does not have a reference ground, and the first ground D of the antenna assembly 10 is electrically connected to the reference ground of the electronic device or the reference ground of the electronics within the electronic device, either by direct electrical connection or indirectly through a conductive member.

The coverage areas of the first target frequency band, the second target frequency band and the third target frequency band are not particularly limited, and the coverage areas can be set according to the needs. As an example, the first target frequency band, the second target frequency band, and the third target frequency band may overlap together a communication frequency band of a near field communication function, a far field communication frequency band, and a communication frequency band of a navigation function.

In some embodiments, the first target frequency band may include a first frequency band, a second frequency band, and a third frequency band. The first frequency band covers a GPS-L1 frequency band, and the GPS-L1 frequency band is a 1.575GHZ frequency band. The second frequency band covers the WIFI2.4 frequency band, and the WIFI2.4 frequency band is 2.4-2.5GHz frequency band. The third frequency band covers a 3G or 4G communication frequency band.

For example, as shown in FIG. 2, the first frequency band may be represented by the mark point 1, the frequency of the mark point 1 is 1.5766GHz, the radiation efficiency is-8.0811 dB, the second frequency band may be represented by the mark point 2, the frequency of the mark point 2 is 2.4667GHz, the radiation efficiency is-9.9973 dB, the third frequency band may be represented by the mark point 3, the frequency of the mark point 3 is 2.9773GHz, and the radiation efficiency is-15.904 dB.

Accordingly, the antenna ANT1 has a first resonance mode including a first sub-resonance mode, a second sub-resonance mode, and a third sub-resonance mode supporting the first frequency band, the second frequency band, and the third frequency band, respectively. Specifically, as shown by the broken line in fig. 3 (a), the first sub-resonance mode is a 1/4 wavelength mode from the first ground D to the slit 13. As shown by the broken line in fig. 3 (b), the second sub-resonance mode is a 1/4 wavelength mode from the first feeding point E to the slit 13. As shown by the dotted line in fig. 3 (c), the third sub-resonance mode is the same-directional current mode from the first feed 112 to the second ground GND 2.

In some embodiments, the second target frequency band may include a fourth frequency band, a fifth frequency band, a sixth frequency band, and a seventh frequency band. The fourth frequency band covers an LTE communication frequency band, where the LTE communication frequency band includes a frequency band of a communication broadband of 4G communication and below 4G. The fifth frequency band covers the UHB frequency band, which may include an N78 frequency band, the N78 frequency band being a 3.4-3.6GHz frequency band. The sixth frequency band covers the WIFI7 communication frequency band, and the WIFI7 communication frequency band is 5.15-7.15GHz frequency band. The seventh frequency band covers an Ultra Wideband (UWB) communication frequency band, and the UWB communication frequency band is a frequency band of a communication broadband below 6G.

For example, as shown in fig. 4, the fourth frequency band may be represented by the mark point 1 and the mark point 2 in fig. 4, where the frequency of the mark point 1 is 2.3176GHz, the radiation efficiency is-34.499 dB, and the frequency of the mark point 2 is 2.9228GHz, and the radiation efficiency is-0.69303 dB. The fifth frequency band can be represented by the marking point 3 and the marking point 4 in fig. 4, wherein the frequency of the marking point 3 is 3.5317GHz (namely, the N78 frequency band), the radiation efficiency is-8.6082 dB, the frequency of the marking point 4 is 4.4621GHz, and the radiation efficiency is-6.3175 dB. The sixth frequency band can be represented by the marking point 5, the marking point 6 and the marking point 7 in fig. 4, wherein the frequency of the marking point 5 is 5.4542GHz, the radiation efficiency is-19.557 dB, the frequency of the marking point 6 is 5.9371GHz, the radiation efficiency is-6.8246 dB, and the frequency of the marking point 7 is 6.9292GHz and the radiation efficiency is-10.009 dB. The seventh frequency band may be represented by the reference point 8 in fig. 4, where the frequency of the reference point 8 is 7.9069GHz and the radiation efficiency is-17.653 dB.

Accordingly, the antenna ANT2 has a second resonant mode, where the second resonant mode includes a first sub-resonant mode and an eighth sub-resonant mode corresponding to the marking point 1-marking point 8 in fig. 4, and the first sub-resonant mode and the eighth sub-resonant mode are respectively used to support the frequency bands corresponding to the marking point 1-marking point 8. The first sub-resonance mode is a ring mode of the third feed source 123 to the second feed source 122 as shown by a dotted line in fig. 5 (a), the first sub-resonance mode can be obtained by the influence of the second matching circuit M2 and the third matching circuit M3, the second sub-resonance mode is a ring mode of the third feed source 123 to the second feed source 112 as shown by a dotted line in fig. 5 (b), the third sub-resonance mode is a 1/4 wavelength mode of the second feed source 112 to the slot 13 as shown by a dotted line in fig. 5 (c), the fourth sub-resonance mode is a 3/4 wavelength mode generated by a ground current on a part of the main board of the slot 13 to the switching circuit M4 as shown by a dotted line in fig. 5 (d), the fifth sub-resonance mode is a 1/4 wavelength mode of the second feed source 122 to the slot 13 as shown by a dotted line in fig. 5 (f), the sixth sub-resonance mode is a ring mode of the second feed source 122 to the ground GND2 as shown by a dotted line in fig. 5 (g), the seventh sub-resonance mode is a 3/4 wavelength mode of the slot 13 to the switching circuit M4 as shown by a dotted line in fig. 5 (g), and the eighth sub-resonance mode is a 3/4 wavelength mode in the switching circuit M4 as shown by a dotted line in fig. 5 (M4).

In some embodiments, the third target frequency band may comprise an LB frequency band. The LB frequency band includes a frequency band less than 1 GHz. For example, as shown in FIG. 6, the LB band may be represented by a mark point 1, the frequency of the mark point 1 is 0.74327GHz, and the radiation efficiency is-10.3748 dB. Accordingly, the antenna ANT3 has a third resonance mode, which is a resonance mode corresponding to the LB frequency band, and the third resonance mode is a 1/4 wavelength mode from the ground GND2 to the slot 13, and is used to support the LB frequency band.

The length of the first radiator 111 and the second radiator 121 is not particularly limited in the embodiment of the present application. As one implementation, the length of the first radiator 111 corresponds to the 1/4 medium wavelength of GPS and the length of the second radiator 121 corresponds to the 1/8-1/4 wavelength of the LB segment.

The antenna assembly 10 has the characteristics of small volume, small occupied space and wide frequency range which can be covered. However, as can be seen from the foregoing, the second sub-resonant mode generated by the antenna ANT1 is to make the first feeding point E on the first radiator 111 to the slot 13 resonate in the WIFI2.4 band. The third sub-resonance mode generated by the antenna ANT2 also resonates the first feeding point E to the slot 13 on the first radiator 111, except that the first feeding point E to the slot 13 on the first radiator 111 at this time resonates in the UHB band.

Because the paths of the resonant currents corresponding to the UHB frequency band and the WIFI2.4 frequency band are the same, the branch length from the first feed point E to the gap 13 is shortened, the radiation efficiency of the UHB frequency band is improved, the radiation efficiency of the WIFI2.4 frequency band is sacrificed, and conversely, the branch length from the first feed point E to the gap 13 is increased, the radiation efficiency of the WIFI2.4 frequency band is improved, and the radiation efficiency of the UHB frequency band is reduced. Therefore, although the antenna assembly 10 in fig. 1 can integrate a plurality of communication frequency bands, the radiation efficiency of the first target frequency band and the second target frequency band cannot be considered, and the communication performance thereof needs to be further improved.

In view of this, an embodiment of the present application proposes an improved antenna assembly based on fig. 1. The antenna assembly is small in size and occupied space, the second radiator in the antenna assembly further comprises an adjusting circuit, the adjusting circuit is connected with the third feed point, the adjusting circuit is used for adjusting the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the second target frequency band is different from the path of the resonant current corresponding to the first target frequency band. The mode can not only improve the radiation efficiency of the first target frequency band excited by the first feed source and the radiation efficiency of the second target frequency band excited by the second feed source respectively, but also avoid the mutual influence between the radiation efficiency of the first target frequency band and the radiation efficiency of the second target frequency band, thereby improving the communication performance.

The antenna assembly 70 in an embodiment of the present application is described in detail below with reference to fig. 7. It should be appreciated that the antenna assembly 70 is an improvement over the antenna assembly of fig. 1, and therefore, portions of the structure of the antenna assembly 70 are identical to portions of the structure of the antenna assembly 10 of fig. 1, and for brevity, reference is made to the antenna assembly 10 above for brevity.

Referring in detail to fig. 7, an antenna assembly 70 is provided to include a first antenna unit 71 and a second antenna unit 72. The first antenna element 71 comprises a first radiator 711 and a first feed 712. The second antenna element 72 includes a second radiator 721, a second feed 722. A slit 73 is formed between the first radiator 711 and the second radiator 721, and the first radiator 711 and the second radiator 721 are coupled through the slit 73 to realize that the first antenna unit 71 and the second antenna unit 72 are a common-caliber common-body antenna.

As shown in fig. 7, the first radiator 711 also has a first ground D ', a first free end C ', and a first feeding point E '. The first feed 712 is connected to a first feed point E ' located between the first ground D ' and the first free end C '. The radio frequency signal received or transmitted by the first feed 712 may excite the first radiator 711 to resonate at the first target frequency band. The first feed 712 corresponds to the antenna ANT1', the antenna ANT1' having a first resonant mode corresponding to a first target frequency band. Alternatively, a first matching circuit M1 'may be provided between the first feed 712 and the first feed point E'.

The second radiator 721 also has a second ground terminal H ', a second free terminal I', a second feeding point F ', and a third feeding point G'. A gap 73 is provided between the second free end I 'and the first free end C'. The second and third feeding points F 'and G' are located between the second ground terminal H 'and the second free terminal I'. The second feed 722 is connected to the second feed point F', and the radio frequency signal received or transmitted by the second feed 722 may excite the first radiator 711 and/or the second radiator 721 to resonate in the second target frequency band. The second feed 722 corresponds to the antenna ANT2', the antenna ANT2' having a second resonant mode corresponding to a second target frequency band. Optionally, a second matching circuit M2 'may be provided between the second feed 722 and the second feed point F'.

The shape of the first radiator 711 or the second radiator 721 is not particularly limited in the embodiment of the present application. The shape of the first radiator 711 or the second radiator 721 includes, but is not limited to, a bent-over, a bar, a sheet, a rod, a coating, a film, or the like. When the first radiator 711 or the second radiator 721 is in a stripe shape, the extending track of the first radiator 711 or the second radiator 721 is not limited in the present application. For example, the first radiator 711 or the second radiator 721 may extend in a straight line, a curved line, a multi-stage bending, or the like. The first radiator 711 or the second radiator 721 may have a uniform width on the extended path, or may have a gradually-changed width, or may have a stripe shape with a different width such as a widened region.

As an example, as shown in fig. 7, the first radiator 711 may have a meander line shape folded by 90 degrees. The first ground terminal D' and the first free terminal C are both ends of the first radiator 711. The second radiator 721 may have a linear shape. The second ground terminal H 'and the second free terminal I' are both ends of the second radiator 721.

In an embodiment of the present application, the first radiator 711 and/or the second radiator 721 may be formed in any one or more of a flexible circuit board (FPC, flexible Printed Circuit) antenna radiator, a laser direct Structuring (LDS, laser Direct) antenna radiator, a printed direct Structuring (PDS, print Direct) antenna radiator, or a metal bezel.

By setting the first radiator 711 to be folded by 90 degrees and the second radiator 721 to be linear, the antenna assembly 70 can be advantageously mounted at a corner position of the electronic device 20 (for example, an upper left corner of the electronic device 20) described later, so that the antenna assembly 70 has a better radio frequency environment and is not easy to shield radio frequency signals by hands in a handheld situation, thereby ensuring performance of wireless communication.

With continued reference to fig. 7, the second antenna element 72 includes a further adjusting circuit M4', the adjusting circuit M4' being connected to the third feeding point G '. In the embodiment of the present application, the adjusting circuit M4' is configured to adjust and control the path length of the resonant current corresponding to the second target frequency band. The path length of the resonant current corresponding to the second target frequency band is different from the path length of the resonant current corresponding to the first target frequency band.

Specifically, the adjusting circuit M4' is configured to adjust the electrical length of the second radiator 721, for example, the adjusting circuit M4' may be configured to assist in adjusting the impedance matching of the second feed 722, so that the antenna ANT2' corresponding to the second feed 722 has a preset S parameter. Accordingly, the adjusting circuit M4 'may change the generated second resonant mode of the antenna ANT2' corresponding to the second feed 722 according to its own low impedance characteristic or high impedance characteristic, so as to regulate the path length of the resonant current corresponding to the second target frequency band.

The position of the third feeding point G ' is not specifically limited in the embodiment of the present application, and the position of the third feeding point G ' may be set according to the electrical length of the second radiator 721 or the design of the generated second resonance mode of the antenna ANT2' corresponding to the second feed source 722. As an example, as shown in fig. 7, the third feeding point G ' is located between the second feeding point F ' and the second ground terminal H '.

By arranging the adjusting circuit M4', the interference of the radio frequency signal of the first target frequency band to the radio frequency signal of the second target frequency band can be reduced. By the mode, the radiation efficiency of the first target frequency band excited by the first feed source and the radiation efficiency of the second target frequency band excited by the second feed source are respectively improved, the influence of the radiation efficiency of the first target frequency band and the radiation efficiency of the second target frequency band can be avoided, the condition that the radiation efficiency of the first target frequency band and the radiation efficiency of the second target frequency band are required to be balanced is avoided, and the communication performance of the antenna assembly 70 is further improved.

In addition, since the position of the third feeding point G ' to which the adjusting circuit M4' is connected to the second radiator 721 is variable, the position of the actual adjusting circuit M4' is flexibly adjustable left and right, which corresponds to the electric length of the second target frequency band being adjustable, thereby improving the degree of freedom of design adjustment. By adjusting the electrical length of the second target frequency band (e.g., UHB frequency band) and adjusting the impedance characteristic of the adjusting circuit M4', the radiation efficiency of the second target frequency band can be effectively ensured.

It should be appreciated that the path of the resonant current in embodiments of the present application may be dictated by the resonant mode of the antenna. In the improved antenna assembly 70, different target frequency bands correspond to different resonant modes, and different resonant modes correspond to different resonant current paths. That is, the mode of operation of the antenna assembly 70 is also improved as compared to the antenna assembly 10 of fig. 1. The mode of operation of the antenna assembly 70 is described in detail below in conjunction with fig. 8-11.

In the embodiment of the present application, as shown in fig. 8, the first target frequency band may include a GPS-L1 frequency band and a WIFI2.4 frequency band. The GPS-L1 frequency band may be represented by reference point 1 in fig. 8, and the WIFI2.4 frequency band may be represented by reference point 2 in fig. 8. The frequency of the marking point 1 is 1.5074GHz, the radiation efficiency is-16.893 dB, the frequency of the marking point 2 is 2.5768GHz, and the radiation efficiency is-11.115 dB.

In response thereto, the antenna ANT1 corresponding to the first feed source has a first resonant mode, and the first resonant mode is used to support reception or transmission of the first target frequency band. Specifically, the first resonant mode includes a first sub-resonant mode and a second sub-resonant mode that support the GPS-L1 band and the WIFI2.4 band, respectively. As shown by the broken line in fig. 9 (a), the first sub-resonance mode is a 1/4 wavelength mode from the first ground D' to the slit 73. As shown by the dashed line in fig. 9 (b), the second sub-resonant mode is a 1/4 wavelength mode of the first feed to the slot 73. It should be appreciated that the first sub-resonant mode and the second sub-resonant mode may both be understood as being quarter wavelength modes of an inverted-F antenna (Inverted-F antenna).

It should be noted that, in the embodiment of the present application, the antenna ANT1 corresponding to the first feed source may also have other operation modes. For example, in order to realize high-frequency deconstruction, the antenna ANT1 corresponding to the first feed needs to introduce a relatively complex band stop, and thus clutter in the intermediate band pass position is formed. As shown in FIG. 8, the clutter may be a peak between annotation point 1 and annotation point 2. Since this peak is not the primary mode of operation, it will not be described in detail here.

In some embodiments, the second target frequency band may comprise a UHB frequency band. The UHB band may include an N78 band and an N77 band, respectively. Wherein the N78 frequency band is 3.4-3.6GHz frequency band, and the N77 frequency band is 3.3-4.2GHz frequency band. For example, the second target frequency band may be represented by the reference point 1-2 in FIG. 10. The frequency of the marking point 1 is 3.4762GHz, the radiation efficiency is-10.789 dB, the frequency of the marking point 2 is 4.0769GHz, and the radiation efficiency is-18.088 dB.

Corresponding to this, the antenna ANT2 corresponding to the second feed source has a second resonance mode, and the second resonance mode is used for supporting the receiving or transmitting of the second target frequency band. In particular, the second resonant mode comprises a corresponding third and fourth sub-resonant mode for supporting the UHB band. Specifically, as shown by the broken line in fig. 11 (a), the third sub-resonance mode is a 1/4 wavelength mode of the adjusting circuit M4 to the slit 73. As shown by the broken line in fig. 11 (b), the fourth sub-resonance mode is a 3/4 wavelength mode of the second ground to the slit 73.

In some embodiments, the second target frequency band may also include a WIFI-5G frequency band. For example, the WIFI-5G band in the second target band may be represented by the labeled point 3-5 in FIG. 10. The frequency of the marking point 3 is 5.0201GHz, the radiation efficiency is-30 dB, the frequency of the marking point 4 is 6.0617GHz, the radiation efficiency is-7.7545 dB, and the frequency of the marking point 5 is 6.2888GHz, and the radiation efficiency is-9.6831 dB.

Corresponding to the second resonance mode, the second resonance mode further comprises a fifth sub resonance mode-a seventh sub resonance mode for supporting the WIFI-5G frequency band. Specifically, as shown by the broken line in fig. 11 (c), the fifth sub-resonance mode is a 3/4 wavelength mode of the first ground to the slit 73. As shown by the broken line in fig. 11 (d), the sixth sub-resonance mode is a 1/4 wavelength mode of the second feed-to-slot 73. As shown by the broken line in fig. 11 (e), the seventh sub-resonance mode is a mixed mode, which is a mixture of the three-quarter wavelength mode from the second ground to the slit and the three-quarter wavelength mode from the first ground to the slit.

By the above arrangement of the resonant modes, it can be determined that, compared to the antenna assembly 10 in fig. 1, the path of the resonant current corresponding to the second target frequency band in the antenna assembly 70 is different from the path of the resonant current corresponding to the first target frequency band.

In addition, as is known from the setting of the fifth sub-resonant mode-the seventh sub-resonant mode in the second resonant mode, the setting of the second resonant mode in the antenna ANT2 in the antenna assembly 70 enables the second target frequency band excited by the second feed 722 to cover more frequency points of the WIFI-5G frequency band, in other words, the setting of the second resonant mode in the antenna ANT2 enables the WIFI-5G to cover multiple modes, so that the radiation efficiency of the WIFI-5G frequency band is superimposed. In addition, the adjustability of frequency offset can be realized through multi-mode coverage, so that the communication performance under the WIFI-5G frequency band is further improved.

In some embodiments, as shown in fig. 7, the second antenna element 72 may also include a third feed 723. The third feed 723 is electrically connected to the second radiator 721, and radio frequency signals received or transmitted by the third feed 723 may excite the second radiator 721 to resonate in a third target frequency band. Optionally, a third matching circuit M3 'may be further disposed between the third feed 723 and the third feed point G'.

It should be understood that the first matching circuit M1', the second matching circuit M2', and the third matching circuit M3' in the embodiment of the present application may have substantially the same functions as the first matching circuit M1, the second matching circuit M2, and the third matching circuit M3 described above, and are not repeated herein for brevity.

As previously described, the third target frequency band may include an LB frequency band. For example, as shown in FIG. 12, the LB band may be represented by a mark point 1, the frequency of the mark point 1 is 0.74227GHz, and the radiation efficiency is-3.3748 dB. Accordingly, the third feed 723 corresponds to the antenna ANT3, the antenna ANT3 having a third resonance mode, which is a 1/4 wavelength mode from the ground GND2 to the slot 73, for supporting a resonance mode of the LB frequency band.

In other embodiments, the third target frequency band may also include a GPS-L5 frequency band, the GPS-L5 frequency band being the 1.176GHz frequency band. It should be appreciated that the GPS-L5 band may also correspond to the third resonant mode of the antenna ANT 3. In contrast, the implementation of the third target frequency band requires a matching adjustment by means of the matching circuit M3'.

By providing the second feed 722 and the third feed 723 in the second antenna unit 72, the antennas ANT2 and ANT3 corresponding to the second feed 722 and the third feed 723 respectively can be excited to generate radio frequency signals of different frequency bands. This approach requires the addition of an extra decimator to decimate the excitation signals corresponding to the different frequency bands.

The embodiment of the present application specifically defines a manner in which the third feed 723 is electrically connected to the second radiator 721. As an example, the third feed 723 may be connected to a fourth feed point (not shown in fig. 7) on the second radiator 721. As another example, as shown in fig. 7, the third feed 723 may be electrically connected to the second feed point F ', that is, the third feed 723 may share the second feed point F' with the second feed 722.

The connection mode of the first feed source 712 and the first feeding point E ', the connection mode of the second feed source 722 and the second feeding point F ', the connection mode of the third feed source 723 and the second feeding point F ', or the connection mode of the adjusting circuit M4' and the third feeding point G ' are not particularly limited in the embodiment of the present application. For example, the connection may be direct electrical connection (such as soldering), or indirect electrical connection via coaxial line, microstrip line, radio frequency line, conductive spring, conductive adhesive, etc. Preferably, the connection mode can be electrically connected through a conductive spring plate.

In the embodiment of the application, the third feed 723 and the second feed 722 are commonly connected to the same feed point F', so that the wiring of the antenna assembly 70 can be reduced, the structural volume of the antenna assembly 70 is smaller, and simultaneously, the antenna assembly is convenient to match and stack with an overall layout antenna, thereby greatly reducing the stacking difficulty of the whole machine.

In order to verify the working efficiency of the antenna assembly 70, the embodiment of the present application provides simulation diagrams of the system radiation efficiency and the system total efficiency of the antenna ANT1' corresponding to the first feed source, the antenna ANT2' corresponding to the second feed source 722, and the antenna ANT3' corresponding to the third feed source 723 in the antenna assembly 70, respectively.

As shown in fig. 13, the frequency of the frequency point 1 generated by excitation of the antenna ANT1' is 1.5172GHz, the total system efficiency is-3.1636 dB, the frequency of the frequency point 2 is 2.5703GHz, and the total system efficiency is-3.2774 dB. The frequency of the frequency point 3 generated by excitation of the antenna ANT2' is 3.4914GHz, the total efficiency of the system is-4.2687 dB, the frequency of the frequency point 4 is 5.0968GHz, the total efficiency of the system is-2.1574 dB, the frequency of the frequency point 5 is 6.1742GHz, and the total efficiency of the system is-2.2923 dB. The frequency of the frequency point 6 generated by excitation of the antenna ANT3' is 0.74353GHz, and the total efficiency of the system is-9.6181 dB. Therefore, the total system efficiency of the WIFI-2.4G frequency band and the GPS-L1 frequency band excited by the antenna ANT1' is between-3 dB and-4 dB, and the radiation efficiency is high. The total system efficiency of the WIFI-5G frequency band excited by the antenna ANT2' is between-3 dB and-5 dB, and the radiation efficiency is high. Meanwhile, the total system efficiency of the LB frequency band excited by the antenna ANT3' is about-10 dB, and the radiation efficiency is high.

As can be seen from the foregoing, the second target frequency band generated by the excitation of the second feed 722 covers more frequency points in the WIFI5G frequency band. Because WEIFI-5G frequency band is higher, the wavelength is shorter, and therefore, the WIFI-5G frequency band is more sensitive to the wiring mode from the second feed source 722 to the second feed point F'. If the wiring mode is improper, the radiation efficiency of the WIFI-5G frequency band is reduced.

In order to ensure the radiation efficiency of the WIFI-5G band, the wire between the second feed 722 and the second feeding point F ' may be set such that the first direction of the feeding current from the second feed 722 to the second feeding point F ' is the same as the direction of the resonance current from the second feeding point F ' to the slot 73.

As an example, as shown in fig. 14, the second feed 722 may be disposed between the second feeding point F 'and the third feeding point G', and in view of this, the wire J between the second feed 722 and the second feeding point F 'may be extended in a direction from the second feed 722 toward the upper left, and thus, the direction of the feeding current of the second feed 722 to the second feeding point F' has a first direction and a second direction. Wherein the first branch is parallel to the second radiator 721 and is the same as the direction of the feeding current of the second feeding point F' to the slot 73. The second direction is perpendicular to the second radiator 721.

By setting the first direction of the feeding current from the second feed source 722 to the second feeding point F 'to be the same as the direction of the resonance current from the second feeding point F' to the slit 73, the reverse direction in the feeding current radiation process can be avoided, thereby ensuring the radiation efficiency of the WIFI-5G frequency band.

Further, as shown in fig. 14, the second feed source 722 and the second feed point F ' may also be provided with a second matching circuit M2', where the second matching circuit M2' is disposed directly under the second feed source 722 in order to further ensure that the feed current is not reversed in radiation. Based on this, the wire J may include a wire J1 and a wire J2. As can be seen from fig. 14, the path of the resonance current in the fifth sub-resonance mode of the antenna ANT2' in the foregoing is shown as a dotted line in fig. 14, and the path of the resonance current does not include the reverse current.

The structure of the first matching circuit M1', the second matching circuit M2', the third matching circuit M3', or the adjusting circuit M4' is not particularly limited in the embodiments of the present application. M1', M2', M3', or M4' may include, but is not limited to, series and/or parallel arranged frequency selective filter networks of capacitance, inductance, resistance, and the like. In some embodiments, M1', M2', M3', or M4' may include a plurality of branches formed by capacitors, inductors, resistors connected in series and/or parallel, and a switch for controlling the on/off of the plurality of branches. The frequency selection parameters (such as resistance value, inductance value and capacitance value) of the matching circuit or the regulating circuit can be regulated by controlling the on-off of different switches, so that the filtering range of the matching circuit is regulated, and the matching circuit or the regulating circuit can regulate corresponding radio frequency signals. The different matching circuits or adjusting circuits may be different, and the specific circuit implementation is not intended to limit the scope of the present application.

The matching circuit or the adjusting circuit is also used for carrying out impedance matching on the radiator which is electrically connected with the matching circuit, so that the impedance of the radiator which is electrically connected with the matching circuit is matched with the frequency of resonance generated by the matching circuit, and further, the receiving and transmitting power of the radiator is higher. By setting the matching circuit or the adjusting circuit and adjusting the parameters of the frequency adjusting circuit, the resonant frequency of each antenna can be moved along the low frequency or the high frequency, the ultra-wideband of the antenna assembly 70 is realized, and the coverage and the communication quality of the antenna signals of the antenna assembly 70 are increased. For example, the first matching circuit is used for performing impedance matching on the excitation signal transmitted by the first feed source to excite the first radiator to resonate in the first target frequency band, the second matching circuit is used for performing impedance matching on the excitation signal transmitted by the second feed source to excite the second radiator and/or the first radiator to resonate in the second target frequency band, and the third matching circuit is used for performing impedance matching on the excitation signal transmitted by the third feed source to excite the second radiator to resonate in the third target frequency band.

The embodiment of the present application further provides an electronic device 20, where the antenna assembly 70 may be applied to the electronic device 20, that is, the electronic device 20 includes any of the antenna assemblies 70 described above.

The type of the electronic device 20 is not particularly limited in the embodiment of the present application, as long as the electronic device 150 needs to implement the wireless communication function through the antenna assembly. The electronic device may be, for example, a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol) telephone, a wireless local loop (wireless local loop, WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a learning or electronic dictionary, and a smart watch.

Taking the electronic device 20 as an example of a mobile phone, fig. 15 and fig. 16 are schematic layout diagrams of the antenna assembly 70 in the electronic device according to the embodiment of the application. It should be appreciated that fig. 15 and 16 are only one illustration, and that a plurality of antenna assemblies 70 may be included in the electronic device 20 and that the antenna assemblies 70 may be mounted anywhere on the electronic device 20.

Preferably, as shown in fig. 15 and 16, the first antenna unit 710 is disposed at an upper corner of the electronic device 20, and the second antenna unit 720 in the antenna assembly 70 is disposed at a top of the electronic device 20, so that it is avoided that a signal of the antenna assembly 70 is blocked when a user holds the electronic device 20.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present disclosure, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a machine-readable storage medium or transmitted from one machine-readable storage medium to another machine-readable storage medium, for example, from one website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The machine-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. integrated with the available medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (e.g., solid state disk (Solid STATE DISK, SSD)), etc.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

In the several embodiments provided in the present disclosure, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. An antenna assembly, comprising:

A first antenna unit, comprising a first radiator and a first feed source, wherein the first radiator has a first ground end, a first free end and a first feed point, wherein the first feed point is located between the first ground end and the first free end, the first feed source is connected to the first feed point, and the first feed source excites the first radiator to resonate in a first target frequency band;

A second antenna unit includes a second radiator, a second feed source, and an adjustment circuit, wherein the second radiator has a second ground end and a second free end, the second free end and the first free end are spaced apart to form a gap, and the second radiator is coupled to the first radiator through the gap;

Among them, the second radiator also has a second feeding point and a third feeding point, the second feeding point and the third feeding point are located between the second free end and the second ground end, the second feed source is connected to the second feeding point, the adjustment circuit is connected to the third feeding point, the second feed source excites the second radiator and/or the first radiator to resonate in a second target frequency band, the adjustment circuit is used to regulate the path length of the resonant current corresponding to the second target frequency band, and the path of the resonant current corresponding to the first target frequency band is different from the path of the resonant current corresponding to the second target frequency band.

2. The antenna assembly according to claim 1 is characterized in that the second antenna unit also includes a third feed source, which is connected to the second feeding point and excites the second radiator to resonate in a third target frequency band.

3 . The antenna assembly according to claim 1 , wherein the third feeding point is located between the second feeding point and the second ground terminal.

4. The antenna assembly according to claim 2, wherein the first antenna unit further comprises a first matching circuit, the first matching circuit being connected to the first feeding point and the first feed source respectively, and the first matching circuit being used to perform impedance matching on the excitation signal transmitted by the first feed source to excite the first radiator to resonate in the first target frequency band;

The second antenna unit further includes a second matching circuit, which is connected to the second feeding point and the second feed source respectively, and is used to perform impedance matching on the excitation signal transmitted by the second feed source to excite the second radiator and/or the first radiator to resonate in the second target frequency band;

The second antenna unit also includes a third matching circuit, which is respectively connected to the second feeding point and the third feed source, and is used to perform impedance matching on the excitation signal transmitted by the third feed source to excite the second radiator to resonate in the third target frequency band.

5. The antenna assembly according to claim 1 is characterized in that the antenna corresponding to the first feed source has a first resonant mode, the first resonant mode includes a first sub-resonant mode and a second sub-resonant mode, the first sub-resonant mode is a quarter-wavelength mode from the first ground end to the slot, the second sub-resonant mode is a quarter-wavelength mode from the first feed source to the slot, the first sub-resonant mode is used to support the GPS-L1 band in the first target frequency band, and the second sub-resonant mode is used to support the WIFI-2.4G band in the first target frequency band.

6. The antenna assembly according to claim 1 is characterized in that the antenna corresponding to the second feed source has a second resonant mode, the second resonant mode includes a third sub-resonant mode and a fourth sub-resonant mode, the third sub-resonant mode is a quarter-wavelength mode from the adjustment circuit to the slot, the fourth sub-resonant mode is a three-quarter wavelength mode from the second ground end to the slot, and the third sub-resonant mode and the fourth sub-resonant mode are used to support the UHB frequency band in the second target frequency band.

7. The antenna assembly according to claim 6 is characterized in that the second resonant mode also includes a fifth sub-resonant mode, a sixth sub-resonant mode and a seventh sub-resonant mode, the fifth sub-resonant mode is a three-quarter wavelength mode from the first ground end to the slot, the sixth sub-resonant mode is a quarter wavelength mode from the second feed source to the slot, the seventh sub-resonant mode is a mixed mode of the three-quarter wavelength mode from the second ground end to the slot and the three-quarter wavelength mode from the first ground end to the slot, and the fifth sub-resonant mode, the sixth sub-resonant mode and the seventh sub-resonant mode are all used to support the WIFI-5G frequency band in the second target frequency band.

8. The antenna assembly according to claim 2 is characterized in that the antenna corresponding to the third feed source has a third resonant mode, the third resonant mode is used to support the third target frequency band, the third resonant mode includes a quarter-wavelength mode from the second ground end to the slot, and the third target frequency band includes the GPS-L5 band or the low-frequency LB band.

9. The antenna assembly according to claim 7 is characterized in that the conductor between the second feed source and the second feeding point is arranged so that a first branch of the direction of the feeding current from the second feed source to the second feeding point is the same as the direction of the resonant current from the second feeding point to the slot.

10. An electronic device, comprising the antenna assembly according to any one of claims 1 to 9.

11 . The electronic device according to claim 10 , wherein the first antenna unit in the antenna assembly is arranged at an upper corner of the electronic device, and the second antenna unit in the antenna assembly is arranged at a top of the electronic device.