TWI858789B - Electronic device and antenna module - Google Patents

Abstract

An electronic device includes a casing and an antenna module. The casing has an accommodating space. The antenna module is located in the accommodating space and includes a substrate, a first antenna unit, a second antenna unit and a third antenna unit. The first antenna unit, the second antenna unit and the third antenna unit are disposed on the substrate and arranged along an arrangement direction. The first antenna unit includes a first radiator and a first ground. The first radiator and the first ground are disposed on opposite sides of the substrate, respectively. The second antenna unit includes a second radiator and a second ground. The second radiator and the second ground are disposed on opposite sides of the substrate, respectively. The third antenna unit includes a third radiator and a third ground. The third radiator and the third ground are disposed on opposite sides of the substrate, respectively.

Description

Electronic devices and antenna modules

The present invention relates to an electronic device and an antenna module, in particular to an eight-receive and eight-transmit electronic device and an antenna module.

With the advancement of wireless communication technology, electronic devices such as mobile phones and personal digital assistants are constantly developing towards diversified functions, thinner and lighter, and faster and more efficient data transmission. Since electronic devices need to use antenna devices to send and receive signals, antenna devices play an important role in wireless communication technology.

Generally speaking, manufacturers need to design antenna devices in accordance with the signal frequency bands applicable to electronic products such as smartphones. However, general antenna devices are large and difficult to install in smartphones, so manufacturers need to design different antenna devices according to the internal space of different smartphones, which is time-consuming and increases manufacturing costs. Therefore, how to maintain the applicable signal frequency band of the antenna device and reduce the size of the antenna device to be applicable to various smartphones is one of the problems that R&D personnel should solve.

The present invention provides a method for maintaining the applicable signal frequency band of an antenna device and reducing the size of the antenna device so as to be applicable to various smart phones.

An electronic device disclosed in an embodiment of the present invention includes a housing and an antenna module. The housing has a containing space. The antenna module is located in the containing space and includes a substrate, a first antenna unit, a second antenna unit and a third antenna unit. The first antenna unit, the second antenna unit and the third antenna unit are disposed on the substrate and arranged along an arrangement direction. Among them, the first antenna unit includes a first radiating body and a first grounding body. The first radiating body and the first grounding body are respectively disposed on opposite sides of the substrate. The first radiating body includes a first radiating body and two first radiating heads. The first radiating body extends along the arrangement direction. The two first radiating heads are connected to one end of the first radiating body and extend in opposite directions respectively. The first grounding body has a first hollow portion. The first hollow portion corresponds to the first radiating body. Wherein, the second antenna unit includes a second radiator and a second grounding body. The second radiator and the second grounding body are respectively arranged on opposite sides of the substrate. The second radiator includes a second radiating body and a second radiating head. The second radiating body extends along the arrangement direction. The second radiating head is connected to one end of the second radiating body. The second grounding body has a second hollow portion. The second hollow portion corresponds to the second radiating body. Wherein, the third antenna unit includes a third radiator and a third grounding body. The third radiator and the third grounding body are respectively arranged on opposite sides of the substrate. The third radiator includes a third radiating body and a third radiating head. The third radiating body extends along the arrangement direction. The third radiation head is connected to one end of the third radiation body, and the direction of the third radiation head is opposite to the direction of the second radiation head. The third grounding body has a third hollow portion. The third hollow portion corresponds to the third radiation body.

Another embodiment of the present invention discloses an antenna module, comprising a substrate, a first antenna unit, a second antenna unit and a third antenna unit. The first antenna unit, the second antenna unit and the third antenna unit are disposed on the substrate and arranged along an arrangement direction. The first antenna unit comprises a first radiator and a first grounding body. The first radiator and the first grounding body are respectively disposed on opposite sides of the substrate. The first radiator comprises a first radiating body and two first radiating heads. The first radiating body extends along the arrangement direction. The two first radiating heads are connected to one end of the first radiating body and extend in opposite directions respectively. The first grounding body has a first hollow portion. The first hollow portion corresponds to the first radiating body. The second antenna unit comprises a second radiator and a second grounding body. The second radiating body and the second grounding body are respectively arranged on opposite sides of the substrate. The second radiating body includes a second radiating body and a second radiating head. The second radiating body extends along the arrangement direction. The second radiating head is connected to one end of the second radiating body. The second grounding body has a second hollow portion. The second hollow portion corresponds to the second radiating body. Among them, the third antenna unit includes a third radiating body and a third grounding body. The third radiating body and the third grounding body are respectively arranged on opposite sides of the substrate. The third radiating body includes a third radiating body and a third radiating head. The third radiating body extends along the arrangement direction. The third radiating head is connected to one end of the third radiating body, and the direction of the third radiating head is opposite to the direction of the second radiating head. The third grounding body has a third hollow portion. The third hollow part corresponds to the third radiation body part.

According to the electronic device and antenna module of the above-mentioned embodiment, since the first hollow portion, the second hollow portion and the third hollow portion respectively correspond to the two first radiation heads, the second radiation head and the third radiation head, and the first antenna unit, the second antenna unit and the third antenna unit are arranged in sequence, the size of the antenna module can be reduced while maintaining the applicable signal frequency band of the antenna device, so that the manufacturer only needs to design the antenna module once and it can be applicable to various smart phones, without having to redesign the antenna module multiple times according to the internal space of different smart phones, thereby simplifying the design process of the antenna module and reducing the manufacturing cost.

The above description of the content of the present invention and the following description of the implementation method are used to demonstrate and explain the principle of the present invention and provide a further explanation of the scope of the patent application of the present invention.

Please refer to Figure 1 and Figure 2. Figure 1 is a schematic plan view of an electronic device according to a first embodiment of the present invention. Figure 2 is an exploded schematic view of a first antenna assembly and a second antenna assembly of the electronic device of Figure 1.

The electronic device 10 of this embodiment includes a housing 20 and an antenna module 30. The housing 20 has a containing space 21. The antenna module 30 is located in the containing space 21 and includes two substrates 31, two first antenna units 32, three second antenna units 33, three third antenna units 34, six isolation bodies 35 and eight feed points 36.

The two substrates 31 are, for example, FR4 boards. The length of one of the two substrates 31 is, for example, 58.15 mm. The width of one of the two substrates 31 is, for example, 10 mm. The thickness of one of the two substrates 31 is, for example, 0.8 mm. The length of the other of the two substrates 31 is, for example, 100.2 mm. The width of the other of the two substrates 31 is, for example, 10 mm. The thickness of the other of the two substrates 31 is, for example, 0.8 mm.

The two first antenna units 32, the three second antenna units 33 and the three third antenna units 34 are respectively disposed on the two substrates 31 and arranged along an arrangement direction A, and the first antenna unit 32, the second antenna unit 33 and the third antenna unit 34 are sequentially arranged on one of the substrates 31 to form a first antenna assembly M1, and the first antenna unit 32, the second antenna unit 33, the third antenna unit 34, the second antenna unit 33 and the third antenna unit 34 are sequentially arranged on the other substrate 31 to form a second antenna assembly M2. In each of the antenna assemblies M1 and M2, any two adjacent first antenna units 32, the second antenna unit 33 and the third antenna unit 34 are, for example, 5 mm apart.

Please refer to Figures 3 to 5. Figure 3 is a schematic plan view of the substrate and the first antenna unit of the electronic device of Figure 1. Figure 4 is a schematic plan view of the substrate and the second antenna unit of the electronic device of Figure 1. Figure 5 is a schematic plan view of the substrate and the third antenna unit of the electronic device of Figure 1.

In detail, each first antenna unit 32 includes a first radiator 321 and a first grounding body 322. The first radiator 321 and the first grounding body 322 are respectively disposed on opposite sides of the substrate 31. The first radiator 321 includes a first radiating body 3211 and two first radiating heads 3212. The first radiating body 3211 extends along an arrangement direction A. The two first radiating heads 3212 are, for example, L-shaped, and the lengths L1 and L2 of the two first radiating heads 3212 are, for example, different. The two first radiating heads 3212 are connected to one end of the first radiating body 3211 and extend in opposite directions. For example, one of the two first radiation heads 3212 extends to the left, and the other of the two first radiation heads 3212 extends to the right. The first grounding body 322 has a first hollow portion 3221. The first hollow portion 3221 corresponds to the first radiation body 3211. In other words, the projection range of the first radiation body 3211 projected onto the substrate 31 at least partially overlaps with the projection range of the first grounding body 322 projected onto the substrate 31.

The first hollow portion 3221 has a first narrow section S1, a first wide section S2 and two first slit sections S3. The first narrow section S1 is connected to one side of the first wide section S2, and the two first slit sections S3 are connected to the other side of the first wide section S2 relative to the first narrow section S1. The two first slit sections S3 extend along the arrangement direction A and are respectively located at two opposite sides of the first radiation body 3211. The lengths L3 and L4 of the two first slit sections S3 are different, and the first slit section S3 with a longer length and the first radiation head 3212 with a shorter length are located on the same side relative to the first radiation body 3211. The shorter first slit segment S3 and the longer first radiation head 3212 are located on the same side relative to the first radiation body 3211.

Each second antenna unit 33 includes a second radiator 331 and a second grounding body 332. The second radiator 331 and the second grounding body 332 are respectively disposed on opposite sides of the substrate 31. The second radiator 331 includes a second radiating body 3311 and a second radiating head 3312. The second radiating body 3311 extends along the arrangement direction A. The second radiating head 3312 is, for example, L-shaped, and the second radiating head 3312 is connected to one end of the second radiating body 3311. The second grounding body 332 has a second hollow portion 3321. The second hollow portion 3321 corresponds to the second radiating body 3311. That is to say, the projection range of the second radiation body 3311 projected onto the substrate 31 at least partially overlaps with the projection range of the second grounding body 332 projected onto the substrate 31 .

The second hollow portion 3321 has a second narrow section S4, a second wide section S5 and two second slit sections S6. The second narrow section S4 is connected to one side of the second wide section S5, and the two second slit sections S6 are connected to the other side of the second wide section S5 opposite to the second narrow section S4. The two second slit sections S6 extend along the arrangement direction A and are respectively located at two opposite sides of the second radiation body 3311. The lengths L5 and L6 of the two second slit sections S6 are different, and the second slit section S6 with a shorter length is located on the same side of the second radiation body 3311 as the second radiation head 3312.

Each third antenna unit 34 includes a third radiator 341 and a third grounding body 342. The third radiator 341 and the third grounding body 342 are respectively disposed on opposite sides of the substrate 31. The third radiator 341 includes a third radiating body 3411 and a third radiating head 3412. The third radiating body 3411 extends along the arrangement direction A. The third radiating head 3412 is, for example, L-shaped, and the third radiating head 3412 is connected to one end of the third radiating body 3411, and the direction of the third radiating head 3412 is opposite to the direction of the second radiating head 3312. For example, the second radiating head 3312 extends to the left, and the third radiating head 3412 extends to the right. The third grounding body 342 has a third hollow portion 3421. The third hollow portion 3421 corresponds to the third radiating body 3411. In other words, the projection range of the third radiating body 3411 onto the substrate 31 at least partially overlaps with the projection range of the third grounding body 342 onto the substrate 31.

The third hollow portion 3421 has a third narrow section S7, a third wide section S8 and two third slit sections S9. The third narrow section S4 is connected to one side of the third wide section S8, and the two third slit sections S9 are connected to the other side of the third wide section S8 relative to the third narrow section S4. The two third slit sections S9 extend along the arrangement direction A and are respectively located at two opposite sides of the third radiation body 3411. The lengths L7 and L8 of the two third slit sections S9 are different, and the shorter third slit section S9 and the third radiation head 3412 are located on the same side relative to the third radiation body 3411.

In this embodiment, the first hollow portion 3221, the second hollow portion 3321 and the third hollow portion 3421 respectively correspond to the two L-shaped first radiation heads 3212, the second radiation head 3312 and the third radiation head 3412, the first antenna unit 32, the second antenna unit 33 and the third antenna unit 34 in the first antenna assembly M1 are arranged in sequence, and the first antenna unit 32, the second antenna unit 33, the third antenna unit 34, the second antenna unit 33 and the third antenna unit 34 in the second antenna assembly M2 are arranged in sequence. In addition to reducing the degree of interference between signals when the first antenna assembly M1 and the second antenna assembly M2 transmit signals, reflection loss can also be reduced.

The six isolators 35 are respectively disposed on the two substrates 31, and are respectively located between the first ground body 322, the second ground body 332 and the third ground body 342 in the first antenna assembly M1 and between the first ground body 322, the second ground body 332, the third ground body 342, the second ground body 332 and the third ground body 342 in the second antenna assembly M2. In this way, when the first antenna assembly M1 and the second antenna assembly M2 transmit signals, the isolation between the first antenna assembly M1 and the second antenna assembly M2 can be increased through the isolators to further reduce interference between the signals.

Eight feeding points 36 are respectively disposed in the first antenna assembly M1 and the second antenna assembly M2, and respectively connect the first radiator 321 and the first grounding body 322, the second radiator 331 and the second grounding body 332, and the third radiator 341 and the third grounding body 342. After the signal is fed through the feeding points 36, it can be radiated outwards from the first radiator 321, the second radiator 331, and the third radiator 341.

In this embodiment, the electronic device 10 may further include a power supply 40. The power supply 40 is, for example, a battery, and is located in the accommodation space 21. The power supply 40 is electrically connected to the antenna module 30 (not shown), so as to provide power to the antenna module 30.

Please refer to Figures 6 to 8. Figure 6 is a data graph showing reflection loss of a first antenna component in an electronic device. Figure 7 is a data graph showing reflection loss of a second antenna component in an electronic device. Figure 8 is a data graph showing reflection loss of a first antenna component and a second antenna component in an electronic device.

In the 5G n79 frequency band, the reflection loss of the first antenna component M1, the reflection loss of the second antenna component M2, and the reflection loss of the combination of the first antenna component M1 and the second antenna component M2 of the present invention are all below -6dB, and even the reflection loss of some frequency bands is lower than -10dB. That is to say, through the first hollow portion 3221, the second hollow portion 3321 and the third hollow portion 3421 respectively corresponding to the two L-shaped first radiation heads 3212, the second radiation head 3312 and the third radiation head 3412, the first antenna unit 32, the second antenna unit 33 and the third antenna unit 34 in the first antenna assembly M1 are arranged in sequence, and the first antenna unit 32, the second antenna unit 33, the third antenna unit 34, the second antenna unit 33 and the third antenna unit 34 in the second antenna assembly M2 are arranged in sequence, so that the first antenna module 30 and the second antenna module 30 can meet the impedance matching requirements of 5G in the n79 frequency band.

Please refer to Figures 9 and 10. Figure 9 is a graph showing the isolation data of the first antenna component in the electronic device. Figure 10 is a graph showing the isolation data of the second antenna component in the electronic device.

In the 5G n79 frequency band, the isolation between the antenna units 32 to 34 of the first antenna assembly M1 of the present invention and the isolation between the antenna units 32 to 34 of the second antenna assembly M2 are both below -13dB. In addition, the envelope correlation coefficient (ECC, not shown) between the antenna units 32 to 34 of the first antenna assembly M1 of the present invention and the envelope correlation coefficient (ECC, not shown) between the antenna units 32 to 34 of the second antenna assembly M2 are both below 0.038. That is, through the first hollow portion 3221, the second hollow portion 3321 and the third hollow portion 3421 respectively corresponding to the two L-shaped first radiation heads 3212, the second radiation head 3312 and the third radiation head 3412, the first antenna unit 32, the second antenna unit 33 and the third antenna unit 34 in the first antenna assembly M1 are arranged in sequence, and the first antenna unit 32, the second antenna unit 33, the third antenna unit 34, the second antenna unit 33 and the third antenna unit 34 in the second antenna assembly M2 are arranged in sequence, so that the isolation degree between the antenna units of the first antenna module 30 and the isolation degree between the antenna units of the second antenna module 30 are high, thereby reducing the signal interference between the antenna units.

According to the electronic device and antenna module of the above-mentioned embodiment, since the first hollow portion, the second hollow portion and the third hollow portion respectively correspond to the two first radiation heads, the second radiation head and the third radiation head, and the first antenna unit, the second antenna unit and the third antenna unit are arranged in sequence, the size of the antenna module can be reduced while maintaining the applicable signal frequency band of the antenna device, so that the manufacturer only needs to design the antenna module once and it can be applicable to various smart phones, without having to redesign the antenna module multiple times according to the internal space of different smart phones, thereby simplifying the design process of the antenna module and reducing the manufacturing cost.

Although the present invention is disclosed as above with the aforementioned embodiments, they are not used to limit the present invention. Anyone skilled in similar techniques may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

10: electronic device 20: housing 21: storage space 30: antenna module 31: substrate 32: first antenna unit 321: first radiator 3211: first radiator body 3212: first radiator head 322: first grounding body 3221: first hollowing part 33: second antenna unit 331: second radiator 3311: second radiator body 3312: second radiator head 332: second grounding body 3321: second hollowing part 34: third antenna unit 341: third radiator 3411: third radiator body 3412: third radiator head 342: third grounding body 3421: The third hollow part 35: Isolator 36: Feed point 40: Power supply A: Arrangement direction L1~L8: Length M1,M2: Antenna assembly S1,S4,S7: Narrow section S2,S5,S8: Wide section S3,S6,S9: Slit section

FIG. 1 is a schematic plan view of an electronic device according to the first embodiment of the present invention. FIG. 2 is a schematic exploded view of the first antenna assembly and the second antenna assembly of the electronic device of FIG. 1. FIG. 3 is a schematic plan view of the substrate and the first antenna unit of the electronic device of FIG. 1. FIG. 4 is a schematic plan view of the substrate and the second antenna unit of the electronic device of FIG. 1. FIG. 5 is a schematic plan view of the substrate and the third antenna unit of the electronic device of FIG. 1. FIG. 6 is a data graph of the reflection loss of the first antenna assembly in the electronic device. FIG. 7 is a data graph of the reflection loss of the second antenna assembly in the electronic device. FIG. 8 is a data graph of the reflection loss of the first antenna assembly and the second antenna assembly in the electronic device. FIG. 9 is a data graph of the isolation of the first antenna assembly in the electronic device. Figure 10 is a data graph showing the isolation of the second antenna component in an electronic device.

10: Electronic devices

20: Shell

21: Storage space

30: Antenna module

31: Substrate

32: First antenna unit

33: Second antenna unit

34: The third antenna unit

35: Isolate body

36: Feed point

40: Power supply parts

A: Arrangement direction

M1,M2: Antenna components

Claims (10)

An electronic device comprises: a housing having a storage space; and an antenna module located in the storage space and comprising a substrate, a first antenna unit, a second antenna unit and a third antenna unit, wherein the first antenna unit, the second antenna unit and the third antenna unit are arranged on the substrate and arranged along an arrangement direction; wherein the first antenna unit comprises a first radiator and a first grounding body, wherein the first radiator and the first grounding body are arranged respectively On opposite sides of the substrate, the first radiator includes a first radiating body and two first radiating heads, the first radiating body extends along the arrangement direction, the two first radiating heads are connected to one end of the first radiating body and extend in opposite directions respectively, the first grounding body has a first hollow portion, the first hollow portion corresponds to the first radiating body; wherein the second antenna unit includes a second radiator and a second grounding body, the second radiating body The radiator and the second grounding body are respectively arranged on opposite sides of the substrate, the second radiator includes a second radiating body and a second radiating head, the second radiating body extends along the arrangement direction, the second radiating head is connected to one end of the second radiating body, the second grounding body has a second hollow portion, the second hollow portion corresponds to the second radiating body; wherein the third antenna unit includes a third radiator and a third grounding body, the The third radiator and the third grounding body are respectively arranged on opposite sides of the substrate. The third radiator includes a third radiating body and a third radiating head. The third radiating body extends along the arrangement direction. The third radiating head is connected to one end of the third radiating body. The direction of the third radiating head is opposite to that of the second radiating head. The third grounding body has a third hollow portion, which corresponds to the third radiating body. The electronic device as described in claim 1, wherein the first antenna unit, the second antenna unit and the third antenna unit are arranged in sequence. An electronic device as described in claim 1, wherein the number of the substrate and the first antenna unit is two, the number of the second antenna unit and the third antenna unit is three each, the first antenna unit, the second antenna unit and the third antenna unit are arranged in sequence on one of the substrates to form a first antenna assembly, and the first antenna unit, the second antenna unit, the third antenna unit, the second antenna unit and the third antenna unit are arranged in sequence on another substrate to form a second antenna assembly. An electronic device as described in claim 3, wherein the antenna module includes six isolators, which are respectively arranged on the two substrates and respectively located between the first antenna unit, the second antenna unit and the third grounding body in the first antenna assembly and between the first antenna unit, the second antenna unit, the third antenna unit, the second antenna unit and the third antenna unit in the second antenna assembly. An electronic device as described in claim 1, wherein the lengths of the two first radiation heads are different. An electronic device as described in claim 5, wherein the first hollow portion has a first narrow section, a first wide section and two first slit sections, the first narrow section and the two first slit sections are respectively connected to opposite sides of the first wide section, the two first slit sections extend along the arrangement direction and are respectively located on opposite sides of the first radiation body, the two first slit sections have different lengths, and the first slit section with a longer length is located on the same side as the first radiation head section with a shorter length, and the first slit section with a shorter length is located on the same side as the first radiation head section with a longer length. An electronic device as described in claim 5, wherein the second hollow portion has a second narrow section, a second wide section and two second slit sections, the second narrow section and the two second slit sections are respectively connected to opposite sides of the second wide section, the two second slit sections extend along the arrangement direction and are respectively located on opposite sides of the second radiation body, the two second slit sections have different lengths, and the second slit section with a shorter length is located on the same side as the second radiation head. An electronic device as described in claim 5, wherein the third hollow portion has a third narrow section, a third wide section and two third slit sections, the third narrow section and the two third slit sections are respectively connected to opposite sides of the third wide section, the two third slit sections extend along the arrangement direction and are respectively located on opposite sides of the third radiation body, the two third slit sections have different lengths, and the third slit section with a shorter length is located on the same side as the third radiation head. The electronic device as described in claim 1, wherein the two first radiation heads, the second radiation head and the third radiation head are all L-shaped. An antenna module, comprising: An antenna module comprises a substrate, a first antenna unit, a second antenna unit and a third antenna unit, wherein the first antenna unit, the second antenna unit and the third antenna unit are arranged on the substrate and arranged along an arrangement direction; wherein the first antenna unit comprises a first radiator and a first grounding body, wherein the first radiator and the first grounding body are respectively arranged on two opposite sides of the substrate, wherein the first radiator comprises a first radiating body and two first radiating heads, wherein the first radiating body extends along the arrangement direction, wherein the two first radiating heads are connected to one end of the first radiating body and extend in opposite directions, wherein the first grounding body has a first hollow portion, wherein the first hollow portion corresponds to the first radiating body; wherein the second antenna unit comprises a second radiator and a second grounding body, wherein the second radiator and the second grounding body are respectively arranged The second radiating body is disposed on two opposite sides of the substrate, the second radiating body includes a second radiating body and a second radiating head, the second radiating body extends along the arrangement direction, the second radiating head is connected to one end of the second radiating body, the second grounding body has a second hollow portion, the second hollow portion corresponds to the second radiating body; wherein the third antenna unit includes a third radiating body and a third grounding body, the third radiating body and The third grounding body is disposed on two opposite sides of the substrate, and the third radiating body includes a third radiating body and a third radiating head. The third radiating body extends along the arrangement direction, and the third radiating head is connected to one end of the third radiating body. The direction of the third radiating head is opposite to that of the second radiating head. The third grounding body has a third hollow portion, and the third hollow portion corresponds to the third radiating body.

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