TWI630757B - Antenna structure and wireless communication device having the same - Google Patents

Abstract

The present invention provides an antenna structure including a first antenna, the first antenna includes a first feed point, and the first feed point is used to feed current to the first antenna; a first radiating portion, The first radiating portion is electrically connected to the first feeding point for receiving a signal of a first frequency band, and the second radiating portion is electrically connected to the first feeding point, and Receiving and transmitting a signal of the second frequency band; and a first grounding point, the first grounding point is spaced apart from the first feeding point, and is electrically connected to the second radiating portion.

Description

Antenna structure and wireless communication device having the same

The invention relates to an antenna structure and a wireless communication device having the same.

With the advancement of wireless communication technology, wireless communication devices are constantly moving toward functions of diversification, thinning, and faster and more efficient data transmission. However, the space for accommodating antennas is becoming smaller and smaller. With the continuous development of Long Term Evolution (LTE) technology, the bandwidth of antennas continues to increase. Therefore, how to design an antenna with a wider bandwidth in a limited space is an important issue in antenna design.

In view of this, it is necessary to provide an antenna structure having a wider bandwidth.

In addition, it is necessary to provide a wireless communication device having the antenna structure.

An antenna structure includes a first antenna, the first antenna includes: a first feed point, the first feed point is used to feed current to the first antenna; a first radiating portion, the The first radiating portion is electrically connected to the first feeding point for receiving the signal of the first frequency band, and the second radiating portion is electrically connected to the first feeding point and is configured to receive And transmitting a signal of the second frequency band; and a first grounding point, the first grounding point is spaced apart from the first feeding point, and is electrically connected to the second radiating portion.

A wireless communication device includes a housing and an antenna structure, the housing includes a first end portion and a second end portion, the second end portion is disposed opposite to the first end portion, and the antenna structure includes: An antenna, the first antenna is disposed at the first end, configured to receive a signal of a first frequency band, and receive and transmit a signal of a second frequency band; and a second antenna, the second antenna is configured And the first antenna is spaced apart from the first antenna, the second antenna is configured to receive and transmit signals of the third frequency band and the fourth frequency band; and the third antenna, the third antenna The third antenna is configured to receive the signals of the fifth frequency band and the sixth frequency band.

The antenna structure and the three antennas in the wireless communication device having the antenna structure do not interfere with each other, and each antenna can operate in at least two frequency bands, thereby making the antenna structure have a wider bandwidth. It can effectively balance the Carrier Aggregation (CA) function of LTE-Advanced and has a lower Envelope Correlation Coefficient (ECC). Moreover, compared with the conventional antenna, the antenna structure only needs to design three antennas, so that the broadband design can be achieved, so that there is no need to occupy too much limited space of the wireless communication device, and the antenna design is more flexible.

100‧‧‧Antenna structure

11‧‧‧First antenna

110‧‧‧First feed point

111‧‧‧First Radiation Department

112‧‧‧Second Radiation Department

113‧‧‧First grounding point

114‧‧‧First radiant section

115‧‧‧second radiant section

116‧‧‧The third radiant section

117‧‧‧fourth radiant section

118‧‧‧ fifth radiant section

119‧‧‧ sixth radiant section

120‧‧‧ seventh radiant section

121‧‧‧First Radiation Arm

122‧‧‧second radiation arm

13‧‧‧second antenna

130‧‧‧second feed point

131‧‧‧Second grounding point

132‧‧‧First Extension

133‧‧‧Second extension

134‧‧‧First extension

135‧‧‧Second extension

136‧‧‧ third extension

137‧‧‧4th extension

15‧‧‧3rd antenna

150‧‧‧ third feed point

151‧‧‧ Third grounding point

152‧‧‧First coupling

153‧‧‧Second coupling

154‧‧‧First coupling arm

155‧‧‧Second coupling arm

156‧‧‧ Third coupling arm

157‧‧‧fourth coupling arm

158‧‧‧ fifth coupling arm

159‧‧‧ sixth coupling arm

160‧‧‧First coupling section

161‧‧‧Second coupling section

162‧‧‧The third coupling section

200‧‧‧Wireless communication device

21‧‧‧ housing

211‧‧‧ Backboard

212‧‧‧ frame

213‧‧‧ accommodating space

214‧‧‧ first end

215‧‧‧second end

217‧‧‧ bottom wall

219‧‧‧Wall

23‧‧‧ Groove

25‧‧‧ Carrying Department

251‧‧‧ first surface

252‧‧‧ second surface

1 is a schematic overall view of a wireless communication device having an antenna structure according to a preferred embodiment of the present invention.

2 is a schematic diagram showing the positions of a first antenna, a second antenna, and a third antenna in the wireless communication device shown in FIG. 1.

3 is a functional block diagram of the wireless communication device shown in FIG. 1.

4 is a schematic diagram of a first antenna and a second antenna in the antenna structure shown in FIG. 1.

FIG. 5 is a schematic diagram of the first antenna and the second antenna in the antenna structure shown in FIG. 4 at another angle.

6 is a schematic diagram of a third antenna in the antenna structure shown in FIG. 1.

7 is a graph showing scattering parameters of a first antenna in the antenna structure shown in FIG. 5.

FIG. 8 is a graph showing scattering parameters of a second antenna in the antenna structure shown in FIG. 5. FIG.

9 is a graph showing scattering parameters of a third antenna in the antenna structure shown in FIG. 6.

Figure 10 is a graph showing the radiation efficiency of the first antenna in the antenna structure shown in Figure 5.

Figure 11 is a graph showing the radiation efficiency of the second antenna in the antenna structure shown in Figure 5.

Figure 12 is a graph showing the radiation efficiency of the third antenna in the antenna structure shown in Figure 6.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without the creative work are all within the scope of the present invention.

It should be noted that when an element is referred to as "electrically connected" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "electrically connected" to another element, it can be a contact connection, for example, a wire connection or a non-contact connection, for example, a non-contact coupling.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art. The terminology used in the description of the invention herein is for the purpose of describing the particular embodiments. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below may be combined with each other without conflict.

Referring to FIG. 1, a preferred embodiment of the present invention provides an antenna structure 100 for use in a wireless communication device 200 such as a mobile phone or a personal digital assistant for transmitting and receiving radio waves to transmit and exchange wireless signals.

The wireless communication device 200 also includes a housing 21. The housing 21 can be an appearance of the wireless communication device 200. The housing 21 includes a back plate 211 and a frame 212. The frame 212 and the back plate 211 may be integrally formed. The frame 212 is disposed around the periphery of the back plate 211 to define an accommodating space 213 together with the back plate 211 (please refer to FIG. 5 ). The accommodating space 213 is configured to receive an electronic component or a circuit module of a substrate, a processing unit, and the like of the wireless communication device 200. The housing 21 further includes a first end 214 and a second end 215. In the embodiment, the first end portion 214 is the bottom of the wireless communication device 200, and is adjacent to the universal serial bus (USB) interface module of the wireless communication device 200 (not shown) ) Settings. The second end portion 215 is a top portion of the wireless communication device 200 and is disposed adjacent to a camera module (not shown) of the wireless communication device 200. In addition, a groove 23 is formed on the surface of the first end portion 214 away from the accommodating space 213 to form a bearing portion 25 at the position of the first end portion 214. The carrying portion 25 and the backing plate 211 together form a stepped structure. In the embodiment, the carrying portion 25 includes a first surface 251 and a second surface 252. The portion of the carrying portion 25 corresponding to the back plate 211 is the first surface 251. The portion of the bearing portion 25 corresponding to the frame 212 is the second surface 252.

Referring to FIG. 2 together, the antenna structure 100 includes a first antenna 11, a second antenna 13, and a third antenna 15. In this embodiment, the first antenna 11 and the second antenna 13 are disposed at the first end portion 214, and are spaced apart from each other. The third antenna 15 is disposed at the second end portion 215 and is spaced apart from the first antenna 11 and the second antenna 13 .

Specifically, in the embodiment, the first antenna 11 in the antenna structure 100 is disposed at a lower right corner of the wireless communication device 200, that is, a right side of the first end portion 214. The second antenna 13 is disposed at a lower left corner of the wireless communication device 200, that is, to the left of the first end portion 214. The third antenna 15 is disposed at the top of the wireless communication device 200, that is, at a position intermediate the second end portion 215. Of course, it can be understood that the positions of the first antenna 11, the second antenna 13, and the third antenna 15 are not limited to the foregoing, and may be adjusted accordingly according to specific situations, and only need to ensure the foregoing An antenna 11 with The second antenna 13 is disposed at the bottom of the wireless communication device 200, that is, the first end portion 214, and the third antenna 15 is disposed at the top of the wireless communication device 200, that is, the second end portion 215 .

Referring to FIG. 3 together, the wireless communication device 200 further includes a radio frequency transceiver module 27. The first antenna 11, the second antenna 13, and the third antenna 15 are electrically connected to the radio frequency transceiver module 27 to communicate with the radio frequency transceiver module 27, thereby implementing wireless signal reception and transmission. .

Referring to FIG. 4 and FIG. 5 , in the embodiment, the first antenna 11 is disposed on the carrying portion 25 . The first antenna 11 includes a first feed point 110, a first radiating portion 111, a second radiating portion 112, and a first grounding point 113. The first feed point 110 is disposed on the first surface 251 and electrically connected to a signal feeding point (not shown) of the radio frequency transceiver module 27 for feeding the first antenna 11 Current signal. The first radiating portion 111 is a pair of antennas. The first radiating portion 111 is a meander-shaped sheet, and is disposed on the first surface 251 and the second surface 252 as a whole. The first radiating portion 111 includes a first radiating section 114, a second radiating section 115, a third radiating section 116, a fourth radiating section 117, a fifth radiating section 118, a sixth radiating section 119, and a seventh radiating radiation which are sequentially connected. Segment 120. The first radiating section 114 has a substantially rectangular strip shape and is disposed on the first surface 251 and electrically connected to the first feeding point 110. The second radiating section 115 has a substantially rectangular strip shape and is disposed on the first surface 251. One end of the second radiating section 115 is vertically connected to the first radiating section 114 away from one end of the first feeding point 110 and extends in a direction close to the second surface 252.

The third radiant section 116 is substantially rectangular in shape and is disposed on the second surface 252. One end of the third radiating section 116 is vertically connected to the second radiating section 115 away from one end of the first radiating section 114, and is parallel to the first radiating section 114 and close to the first feeding point 110 The direction extends. In this embodiment, the first radiating section 114 and the third radiating section 116 are disposed on the same side of the second radiating section 115. The first radiating section 114, the second radiating section 115 and the third radiating section 116 together form a substantially U-shaped structure. In this embodiment, the length of the first radiating section 114 is greater than the length of the third radiating section 116.

The fourth radiating section 117 has a substantially rectangular strip shape and is disposed on the first surface 251. One end of the fourth radiating section 117 is perpendicularly connected to the third radiating section 116 away from one end of the second radiating section 115, and is parallel to the second radiating section 115 and adjacent to the first radiating section 114 The direction extends. In this embodiment, the length of the fourth radiating section 117 is smaller than the length of the second radiating section 115.

The fifth radiating section 118 has a substantially rectangular strip shape and is disposed on the first surface 251. One end of the fifth radiating section 118 is vertically connected to the fourth radiating section 117 away from one end of the third radiating section 116, and is parallel to the first radiating section 114 and close to the second radiating section 115. The direction extends. In this embodiment, the length of the fifth radiating section 118 is smaller than the length of the third radiating section 116.

The sixth radiating section 119 has a substantially rectangular strip shape and is disposed on the first surface 251. One end of the sixth radiating section 119 is perpendicularly connected to the fifth radiating section 118 away from one end of the fourth radiating section 117, and is parallel to the second radiating section 115 and adjacent to the first radiating section 114. The direction extends. In this embodiment, the length of the sixth radiating section 119 is smaller than the length of the fourth radiating section 117.

The seventh radiating section 120 has a substantially rectangular strip shape, one end of which is perpendicularly connected to the sixth radiating section 119 away from one end of the fifth radiating section 118, and is parallel to the first radiating section 114 and away from the The direction of the second radiating section 115 extends. In this embodiment, the length of the seventh radiating section 120 is greater than the length of the third radiating section 116, but smaller than the length of the first radiating section 114. In addition, the first radiating section 114, the third radiating section 116, the fourth radiating section 117, the fifth radiating section 118, the sixth radiating section 119, and the seventh radiating section 120 are all disposed in the second radiating section 115. The same side.

The second radiating portion 112 is a main antenna. The overall length of the second radiating portion 112 is smaller than the length of the first radiating portion 111. The second radiating portion 112 includes a first radiating arm 121 and a second radiating arm 122. The first radiating arm 121 is disposed on the first surface 251. One end of the first radiating arm 121 is arcuately connected to the first feeding point 110 away from the side of the first radiating section 114, and is away from the first radiating section 114 and close to the second The surface 252 extends in the direction. The second radiating arm 122 is substantially in the shape of an arc and is disposed on the second surface 252. One of the second radiating arms 122 An end arcuate transition is coupled to the first radiating arm 121 away from one end of the first feed point 110 and extends in a direction adjacent the third radiating section 116. In this embodiment, the length of the first radiating arm 121 is smaller than the length of the second radiating arm 122.

The first grounding point 113 is disposed on the first radiating portion 111. Specifically, the first grounding point 113 is disposed at one end of the first radiating section 114 near the first radiating arm 121. The first grounding point 113 is electrically connected to a grounding point (not shown) of the radio frequency transceiver module 27, and is electrically connected to the first radiating portion 111, thereby providing grounding for the first antenna 11.

It can be understood that when a current is fed from the first feed point 110, the current will flow through the first radiant section 114, the second radiant section 115, the third radiant section 116, and the fourth radiant section 117 in sequence. The fifth radiating section 118, the sixth radiating section 119 and the seventh radiating section 120 are grounded by the first grounding point 113, so that the first radiating section 111 receives only the signal of the first frequency band. In addition, the current flowing into the first feeding point 110 will also flow through the first radiating arm 121 and the second radiating arm 122, so that the second radiating portion 112 can receive and transmit a signal of the second frequency band. . In this embodiment, the first frequency band is a low frequency band, and the frequency range is 729-960 MHz. The second frequency band is a high frequency band, and the frequency range is 2300-2700 MHz.

Referring to FIG. 5 , the second antenna 13 is disposed on the carrying portion 25 and spaced apart from the first antenna 11 . The second antenna 13 is a main antenna. In this embodiment, the second antenna 13 includes a second feed point 130, a second ground point 131, a first extension 132, and a second extension 133. The second feed point 130 is disposed on the first surface 251. The second feeding point 130 is disposed at a side of the first feeding point 110 away from the first grounding point 113 and spaced apart from the first feeding point 110. The second feed point 130 is electrically connected to the signal feed point of the radio frequency transceiver module 27 to feed the current signal to the second antenna 13 . The second grounding point 131 is disposed on the first surface 251 and between the first feeding point 110 and the second feeding point 130. The second grounding point The 131 is used for electrically connecting to a grounding point of the radio frequency transceiver module 27 to provide grounding for the second antenna 13.

The first extending portion 132 is substantially in the shape of a rectangular plate and is disposed on the first surface 251 . The first extending portion 132 is perpendicularly connected to one end of the second feeding point 130 and the second grounding point 131 and extends in a direction parallel to the second radiating section 114 and adjacent to the third radiating section 115. In this embodiment, the width of the first extending portion 132 is greater than the width of the second radiating portion 115.

The second extension 133 includes a first extension 134, a second extension 135, a third extension 136, and a fourth extension 137 that are sequentially connected. The first extension 134 has a substantially rectangular strip shape and is disposed on the first surface 251 . One end of the first extension 134 is vertically connected to one side of the second feed point 130 away from the second ground point 131, and is parallel to the first extension 132 and away from the first radiant section The direction of 114 and the second radiating section 115 extends. The second extension 135 is substantially in the shape of an arc and is disposed on the first surface 251 . One end of the second extension 135 is arcuately connected to one end of the first extension 134 away from the second feed point 130, and is parallel to the first radiant section 114 and adjacent to the second radiant section Extends in the direction of 115.

The third extension 136 is substantially straight and is disposed on the first surface 251 . One end of the third extension 136 is perpendicularly connected to one end of the second extension 135 away from the first extension 134 and in a direction parallel to the second radiant section 115 and adjacent to the second surface 252 extend. The fourth radiating section 137 is substantially in the shape of an arc and is disposed on the second surface 252. One end of the fourth radiating section 137 is perpendicularly connected to one end of the third extending section 136 away from the second extending section 135, and is parallel to the second extending section 135 and away from the third radiating section 116. The direction extends.

In this embodiment, the overall length of the second extension portion 133 is greater than the overall length of the first extension portion 132. When a current is fed from the second feed point 130, the current will flow through the first extension 132, thereby allowing the first extension 132 to receive and transmit a signal of the third frequency band. In addition, the current flowing into the second feed point 130 will also flow through the first of the second extensions 133 in sequence. The extension portion 134, the second extension portion 135, the third extension portion 136, and the fourth extension portion 137 are grounded by the second feed point 130, so that the second extension portion 133 can receive and emit the fourth The signal of the frequency band. In this embodiment, the third frequency band is a medium frequency band, and the frequency range is 1710-2170 MHz. The fourth frequency band is a low frequency band and has a frequency range of 824-894 MHz.

Referring to FIG. 6 , the third antenna 15 is a pair of antennas disposed in the accommodating space 213 . The accommodating space 213 includes a bottom wall 217 and a peripheral wall 219 disposed around the bottom wall 217 . The third antenna 15 is entirely disposed on the bottom wall 217 and extends to the peripheral wall 219. The third antenna 15 includes a third feed point 150 , a third ground point 151 , a first coupling portion 152 , and a second coupling portion 153 . The third feeding point 150 is disposed on the bottom wall 217 and electrically connected to the signal feeding point of the RF transceiver module 27 for feeding a current signal to the third antenna 15 . The third grounding point 151 is disposed on the bottom wall 217 and spaced apart from the third feeding point 150. The third grounding point 151 is electrically connected to the grounding point of the radio frequency transceiver module 27 to provide grounding for the third antenna 15.

The first coupling portion 152 includes a first coupling arm 154, a second coupling arm 155, a third coupling arm 156, a fourth coupling arm 157, a fifth coupling arm 158, and a sixth coupling arm 159. The first coupling arm 154 has a substantially rectangular strip shape, and one end thereof is electrically connected to the third feeding point 150. The second coupling arm 155 is substantially in the shape of a strip, and is disposed on the bottom wall 217 of the accommodating space 213. One end of the second coupling arm 155 is vertically connected to one end of the first coupling arm 154 away from the third feeding point 150 and extends in a direction close to the peripheral wall 219 of the accommodating space 213.

The third coupling arm 156 is substantially in the shape of a strip, and is disposed on the bottom wall 217 of the accommodating space 213. One end of the third coupling arm 156 is perpendicularly connected to the second coupling arm 155 away from one end of the first coupling arm 154, and is parallel to the first coupling arm 154 and away from the third grounding point 151 The direction extends until the third feed point 150 is crossed. In this embodiment, the length of the third coupling arm 156 is greater than the length of the first coupling arm 154. The fourth coupling arm 157 is substantially in the shape of a strip, and is disposed on the peripheral wall 219 of the accommodating space 213. One end of the fourth coupling arm 157 is curved The third coupling arm 156 is connected away from one end of the second coupling arm 155 and extends to the peripheral wall 219.

The fifth coupling arm 158 and the sixth coupling arm 159 are disposed on the peripheral wall 219 of the accommodating space 213 . The fifth coupling arm 158 and the sixth coupling arm 159 are each in a rectangular strip shape. One ends of the fifth coupling arm 158 and the sixth coupling arm 159 are vertically connected to one end of the fourth coupling arm 157 away from the third coupling arm 156, and respectively extend in two opposite directions. In this embodiment, the fifth coupling arm 158 and the sixth coupling arm 159 have the same length and are located on the same straight line, and further form a substantially T-shaped structure together with the fourth coupling arm 157.

The second coupling portion 153 is disposed on the bottom wall 217 of the accommodating space 213 as a whole. The second coupling portion 153 includes a first coupling segment 160, a second coupling segment 161, and a third coupling segment 162 that are sequentially connected. The first coupling section 160 has a substantially rectangular strip shape and is disposed on the bottom wall 217 of the accommodating space 213. One end of the first coupling section 160 is electrically connected to the third grounding point 151 and extends in a direction away from the first coupling arm 154. The second coupling section 161 has a substantially rectangular strip shape, one end of which is perpendicularly connected to one end of the first coupling section 160 away from the third grounding point 151, and is parallel to the second coupling arm 155 and close to The peripheral wall 219 of the accommodating space 213 extends in a direction. The third coupling section 162 has a substantially rectangular strip shape, one end of which is perpendicularly connected to the second coupling section 161 away from one end of the first coupling section 160, and is parallel to the first coupling section 160 and adjacent to the The direction of the first coupling portion 152 extends until it is vertically connected to the junction of the second coupling arm 155 and the third coupling arm 156.

In this embodiment, the overall length of the first coupling portion 152 is greater than the overall length of the second coupling portion 153. When current is fed from the third feed point 150, the current will flow through the first coupling arm 154, the second coupling arm 155, the third coupling arm 156, the fourth coupling arm 157, and the sixth coupling. The arm 159, in turn, causes the first coupling portion 152 to receive only the signal of the fifth frequency band. In addition, the current flowing into the third feed point 150 will also flow through the first coupling arm 154, the second coupling arm 155, the third coupling arm 156, the fourth coupling arm 157, and the fifth coupling arm 158, thereby Making the first coupling portion 152 only Receive the signal of the sixth frequency band. In this embodiment, the fifth frequency band is a medium frequency band, and the sixth frequency band is a high frequency band. The frequency ranges of the fifth frequency band and the sixth frequency band are 1805-2690 MHz.

FIG. 7 is a graph of S parameters (scattering parameters) of the first antenna 11 in the antenna structure 100 described above. FIG. 8 is a graph of S parameters (scattering parameters) of the second antenna 13 in the antenna structure 100 described above. FIG. 9 is a graph of S parameters (scattering parameters) of the third antenna 15 in the antenna structure 100 described above. Obviously, as can be seen from FIG. 7 to FIG. 9 above, the antenna structure 100 has a better bandwidth and satisfies the antenna design requirements.

FIG. 10 is a graph showing the radiation efficiency of the first antenna 11 in the antenna structure 100 described above. FIG. 11 is a graph showing the radiation efficiency of the second antenna 13 in the antenna structure 100 described above. FIG. 12 is a graph showing the radiation efficiency of the third antenna 15 in the antenna structure 100 described above. Obviously, it can be seen from the above FIG. 10 to FIG. 12 that when the antenna structure 100 can operate in a plurality of communication systems, both of them have better radiation efficiency and meet the design requirements of general antennas.

Please refer to Table 1 below for the envelope correlation coefficient (ECC) value of the antenna structure 100 operating at each frequency. Obviously, when the antenna structure 100 operates in each frequency band, it has a lower envelope correlation coefficient ECC.

Obviously, since each antenna in the antenna structure 100 is provided with a separate signal feeding point, for example, the first antenna 11 is provided with a first feeding point 110, and the second antenna 13 is provided with a second feeding point 130. The third antenna 15 is provided with a third feed point 150. In this way, the three antennas do not interfere with each other, and each antenna can operate in at least two frequency bands, thereby enabling the antenna structure 100 to have a wide bandwidth, which can effectively balance the long-term evolution technology upgrade version (LTE). -Advanced) Carrier Aggregation (CA) function with a lower Envelope Correlation Coefficient (ECC). Moreover, compared with the conventional antenna, the antenna structure 100 only needs to design three antennas, so that the broadband design can be achieved, so that the space of the wireless communication device 200 is not required to be occupied, and the antenna design is more flexible. .

It can be understood that the second radiating portion 112 and the second antenna 13 of the first antenna 11 in the antenna structure 100 are both main antennas, so that the signals of the corresponding frequency bands can be received and transmitted, for example, the first day. The second radiating portion 112 and the second antenna 13 of the line 11 can operate at least in the second frequency band (2300-2700 MHz), the third frequency band (1710-2170 MHz), and the fourth frequency band (824-894 MHz), that is, the first The second radiating portion 112 and the second antenna 13 of an antenna 11 can collectively cover low, medium, and high frequencies, and have a wide bandwidth. In addition, the third antenna 15 in the antenna structure 100 is a secondary antenna, and the first radiating portion 111 of the first antenna 11 also functions as a secondary antenna for receiving signals of corresponding frequency bands, for example, The first radiating portion 111 and the third antenna 15 of the first antenna 11 can operate at least in the first frequency band (729-960 MHz), the fifth frequency band, and the sixth frequency band (1805-2690 MHz), that is, the first antenna. The first radiating portion 111 and the third antenna 15 of 11 may also collectively cover low, medium, and high frequencies, and have a wide bandwidth.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

Claims (18)

An antenna structure is improved in that the antenna structure includes a first antenna and a second antenna, and the first antenna includes: a first feed point, where the first feed point is used for the first day a line feeding current; a first radiating portion, the first radiating portion being electrically connected to the first feeding point for receiving a signal of a first frequency band; a second radiating portion, the second radiating portion and the The first feed point is electrically connected, and is configured to receive and transmit a signal of the second frequency band; and a first ground point, the first ground point is spaced apart from the first feed point, and is electrically connected to the first a second radiating portion; the second antenna is spaced apart from the first antenna, and the second antenna includes a second feeding point, a second grounding point, a first extending portion, and a second extending portion, The second feeding point is disposed at a side of the first feeding point away from the first grounding point, and is spaced apart from the first feeding point, where the second grounding point is disposed on the first feeding point Between the ingress point and the second feed point, the first extension is electrically connected to the second feed point and the second ground point, Receiving and transmitting signals to the third frequency band, the second extending portion is electrically connected to the second feed point, for receiving and transmitting frequency bands of the fourth signal. The antenna structure according to claim 1, wherein the first radiating portion includes a first radiating segment, a second radiating segment, a third radiating segment, a fourth radiating segment, a fifth radiating segment, and a first a sixth radiating section and a seventh radiating section, the first radiating section is electrically connected to the first feeding point, and one end of the second radiating section is vertically connected to the first radiating section away from the first feeding section One end of the point, one end of the third radiating section is vertically connected to the second radiating section away from one end of the first radiating section, and is parallel to the first radiating section and close to the first feeding point Extending in a direction, one end of the fourth radiating section is perpendicularly connected to the third radiating section away from one end of the second radiating section, and extends in a direction parallel to the second radiating section and adjacent to the first radiating section One end of the fifth radiant section is vertically connected Connecting to the fourth radiating section away from one end of the third radiating section and extending in a direction parallel to the first radiating section and adjacent to the second radiating section, one end of the sixth radiating section is vertically connected to The fifth radiating section is away from one end of the fourth radiating section and extends in a direction parallel to the second radiating section and adjacent to the first radiating section, and one end of the seventh radiating section is vertically connected to the first The six radiating segments are remote from one end of the fifth radiating segment and extend in a direction parallel to the first radiating segment and away from the second radiating segment. The antenna structure of claim 2, wherein an overall length of the second radiating portion is smaller than a length of the first radiating portion, and the second radiating portion includes a first radiating arm and a second radiating arm, One end of the first radiating arm is arcuately connected to the first grounding point away from one side of the first radiating section, and extends in a direction away from the first radiating section, the second radiating arm An arc-shaped transition is connected to the first radiating arm away from one end of the first grounding point and extends in a direction close to the third radiating section. The antenna structure of claim 2, wherein the first extension is vertically connected to one of the second ground point and the second feed point, and is parallel to the second radiant section and close to the The direction of the third radiant section extends. The antenna structure of claim 4, wherein the second extension comprises a first extension, a second extension, a third extension, and a fourth extension, which are sequentially connected, the first extension One end is vertically connected to the second feeding point away from the side of the second grounding point, and extends in a direction parallel to the first extending portion and away from the first radiating portion and the second radiating portion, One end of the second extension is arcuately connected to the first extension from one end of the second feed point, and extends in a direction parallel to the first radiation segment and adjacent to the second radiation segment. One end of the third extension is vertically connected to the second extension away from one end of the first extension, and extends in a direction parallel to the second radiant section and adjacent to the third radiant section, the first One end of the four radiant section is vertically connected to the third extension section away from one end of the second extension section, and is parallel to the second extension section and away from The direction of the third radiant section extends. The antenna structure of claim 2, wherein the antenna structure further includes a third antenna, the third antenna is spaced apart from the first antenna and the second antenna, and the third The antenna includes a third feed point, a third ground point, a first coupling portion, and a second coupling portion, the first coupling portion being electrically connected to the third feeding point, the second coupling portion and the first portion The first grounding portion is electrically connected to the first coupling portion, and the first coupling portion is configured to receive the wireless signals of the fifth frequency band and the sixth frequency band. The antenna structure of claim 6, wherein the frequency of the first frequency band is lower than the frequency of the fifth frequency band and the sixth frequency band, and the frequency of the second frequency band is higher than the frequency of the third frequency band. The frequency of the third frequency band is higher than the frequency of the fourth frequency band. The antenna structure of claim 6, wherein the first coupling portion comprises a first coupling arm, a second coupling arm, a third coupling arm, a fourth coupling arm, a fifth coupling arm, and a sixth coupling arm One end of the first coupling arm is electrically connected to the third feeding point, and one end of the second coupling arm is vertically connected to one end of the first coupling arm away from the third feeding point, the first One end of the three coupling arms is vertically connected to the second coupling arm away from one end of the first coupling arm, and extends in a direction parallel to the first coupling arm and away from the third grounding point until the first a three-infeed point, one end of the fourth coupling arm is curvedly connected to the third coupling arm away from one end of the second coupling arm, and one of the fifth coupling arm and the sixth coupling arm are vertically connected The fourth coupling arm is away from one end of the third coupling arm and extends in two opposite directions, and further forms a T-shaped structure together with the fourth coupling arm. The antenna structure of claim 8, wherein the second coupling portion includes a first coupling segment, a second coupling segment, and a third coupling segment that are sequentially connected, and one end of the first coupling segment is electrically connected to The third grounding point extends in a direction away from the first coupling arm, and one end of the second coupling section is vertically connected to one end of the first coupling section away from the third grounding point, and is parallel Extending the direction of the second coupling arm, one end of the third coupling section is vertically connected to the second coupling section Extending from one end of the first coupling section and extending in a direction parallel to the first coupling section and adjacent to the first coupling section until vertically connected to the connection of the second coupling arm and the third coupling arm At the office. A wireless communication device includes a housing and an antenna structure, the housing includes a first end portion and a second end portion, the second end portion is disposed opposite to the first end portion, and the antenna structure includes: An antenna, the first antenna is disposed at the first end, configured to receive a signal of a first frequency band, and receive and transmit a signal of a second frequency band; and a second antenna, the second antenna is configured And the first antenna is spaced apart from the first antenna, the second antenna is configured to receive and transmit signals of the third frequency band and the fourth frequency band; and the third antenna, the third antenna The third antenna is configured to receive the signals of the fifth frequency band and the sixth frequency band, where the first antenna includes a first feed point and a first ground point, where a feed point for feeding current to the first antenna, the first ground point for providing ground for the first antenna, and the second antenna including a second feed point and a second ground point a first extension portion and a second extension portion, wherein the second feed point is disposed at the first feed point away from the One side of a grounding point and spaced apart from the first feeding point, the second grounding point being disposed between the first feeding point and the second feeding point, the first extension The portion is electrically connected to the second feed point and the second ground point for receiving and transmitting the signal of the third frequency band, and the second extension portion is electrically connected to the second feed point for receiving And transmitting the signal of the fourth frequency band. The wireless communication device of claim 10, wherein the housing comprises a backboard and a frame, and the frame is disposed around a circumference of the backboard to form a cavity together with the backplane. a space is formed, a surface of the first end portion facing away from the accommodating space is formed with a recess to form a bearing portion at a position of the first end portion, and the first antenna and the second antenna are disposed on The third antenna is disposed in the accommodating space on the carrying portion. The wireless communication device of claim 10, wherein the first frequency The frequency of the segment is lower than the frequency of the fifth frequency band and the sixth frequency band, and the frequency of the second frequency band is higher than the frequency of the third frequency band, and the frequency of the third frequency band is higher than the frequency of the fourth frequency band. The wireless communication device of claim 10, wherein the first antenna comprises a first radiating portion, and the first radiating portion comprises a first radiating section, a second radiating section, and a third radiating unit which are sequentially connected a segment, a fourth radiant segment, a fifth radiant segment, a sixth radiant segment, and a seventh radiant segment, the first radiant segment being electrically connected to the first feed point, and one end of the second radiant segment being vertically connected to The first radiating segment is away from one end of the first feeding point, and one end of the third radiating segment is perpendicularly connected to the second radiating segment away from one end of the first radiating segment, and the parallel a radiating section extending in a direction close to the first feeding point, one end of the fourth radiating section being vertically connected to the third radiating section away from one end of the second radiating section, and parallel to the second a radiant section extending in a direction of the first radiant section, one end of the fifth radiant section being perpendicularly connected to the fourth radiant section away from one end of the third radiant section, and parallel to the first radiant section And extending in the direction of the second radiant section, One end of the sixth radiating section is vertically connected to the fifth radiating section away from one end of the fourth radiating section, and extends in a direction parallel to the second radiating section and adjacent to the first radiating section, the seventh One end of the radiating section is vertically connected to the sixth radiating section away from one end of the fifth radiating section, and extends in a direction parallel to the first radiating section and away from the second radiating section. The wireless communication device of claim 13, wherein the first antenna further includes a second radiating portion, wherein an overall length of the second radiating portion is smaller than a length of the first radiating portion, The second radiating portion includes a first radiating arm and a second radiating arm, and one end of the first radiating arm is arc-transformed to the side of the first grounding point away from the first radiating section, and is away from the first Extending in a direction of a radiating section, one end of the second radiating arm is arcuately connected to the first radiating arm away from one end of the first grounding point and extending in a direction close to the third radiating section. The wireless communication device of claim 13, wherein the first extension is vertically connected to one of the second ground point and the second feed point, and the second radiation is parallel And extending in a direction of the third radiant section, the second extension portion includes a first extension section, a second extension section, a third extension section and a fourth extension section sequentially connected, wherein the first extension section One end is vertically connected to the second feed point away from one side of the second ground point, and extends in a direction parallel to the first extension and away from the first radiation segment and the second radiation segment, One end of the second extension is arcuately connected to one end of the first extension away from the second feed point and extends in a direction parallel to the first radiant section and adjacent to the second radiant section, One end of the third extension is vertically connected to the second extension away from one end of the first extension, and extends in a direction parallel to the second radiant section and adjacent to the third radiant section, the fourth One end of the radiant section is vertically connected to the third extension from one end of the second extension and extends in a direction parallel to the second extension and away from the third radiant section. The wireless communication device of claim 13, wherein the third antenna comprises a third feed point, a third ground point, a first coupling portion and a second coupling portion, the first coupling portion and the The third feeding point is electrically connected to the third grounding point and the first coupling part, and the first coupling part is configured to receive the wireless of the fifth frequency band and the sixth frequency band. Signal. The wireless communication device of claim 16, wherein the first coupling portion comprises a first coupling arm, a second coupling arm, a third coupling arm, a fourth coupling arm, a fifth coupling arm, and a sixth coupling An arm, one end of the first coupling arm is electrically connected to the third feeding point, and one end of the second coupling arm is vertically connected to one end of the first coupling arm away from the third feeding point, One end of the third coupling arm is vertically connected to the second coupling arm away from one end of the first coupling arm, and extends in a direction parallel to the first coupling arm and away from the third grounding point until the a third feeding point, one end of the fourth coupling arm is curvedly connected to the third coupling arm away from one end of the second coupling arm, and one of the fifth coupling arm and the sixth coupling arm is vertical The fourth coupling arm is connected to one end of the third coupling arm and extends in two opposite directions, and further forms a T-shaped structure together with the fourth coupling arm. The wireless communication device of claim 17, wherein the second coupling portion comprises a first coupling segment, a second coupling segment and a third coupling segment that are sequentially connected, and one end of the first coupling segment is electrically connected To the third grounding point and extending away from the first coupling arm, one end of the second coupling section is vertically connected to one end of the first coupling section away from the third grounding point, and is parallel Extending in a direction of the second coupling arm, one end of the third coupling section is perpendicularly connected to the second coupling section away from one end of the first coupling section, and parallel to the first coupling section and adjacent to the first A coupling portion extends in a direction until vertically connected to the junction of the second coupling arm and the third coupling arm.