Electronic device and method of controlling antenna

Abstract

The invention discloses electronic equipment and a method for controlling an antenna. The electronic equipment comprises a feed source; the first antenna comprises a first radiation branch knot and a second radiation branch knot; a feeding point is arranged between the first end and the second end of the first radiation branch knot, a first grounding point is arranged between the feeding point and the first end, a second grounding point is arranged between the first grounding point and the first end, the feeding point is used for being connected with a feed source, and the first grounding point is used for being connected with a first switching circuit and being grounded; a third grounding point is arranged between the third end and the fourth end of the second radiation branch knot, a fourth grounding point is arranged between the third grounding point and the fourth end, the third grounding point is used for being connected with the second switch circuit and grounded, and an electric coupling gap is formed between the first end and the third end; when the first switch circuit and the second switch circuit are in an off state or an on state, the first antenna generates a first radiation pattern or a second radiation pattern. Wherein the main radiation directions of the first radiation pattern and the second radiation pattern are different.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communication technology, and more specifically, to an electronic device and a method for controlling an antenna. Background Art

[0002] With the development of electronic technology, electronic devices (such as mobile phones, tablet computers, etc.) are increasingly widely used. In addition to mobile calls, text messages and other communication services, electronic devices (such as mobile phones) can also be used for Internet access, video, games and other services. Therefore, the performance of the antenna of electronic devices has a key impact on the user experience. However, the antenna in electronic devices still has the problem of low antenna efficiency. Summary of the invention

[0003] The embodiments of the present application provide an electronic device and a method for controlling an antenna. Various aspects involved in the embodiments of the present application are introduced below.

[0004] In a first aspect, an electronic device is provided, comprising: a feed source; a first antenna, comprising a first radiating branch and a second radiating branch; the first radiating branch comprises a first end and a second end, a feeding point is arranged between the first end and the second end, a first grounding point is arranged between the feeding point and the first end, a second grounding point is arranged between the first grounding point and the first end, the feeding point is used to connect the feed source, the first grounding point is used to connect to a first switching circuit and be grounded, and the second grounding point is used to be grounded; the second radiating branch comprises a third end and a fourth end, a third grounding point is arranged between the third end and the fourth end, the third grounding point and the first grounding point are connected to each other. A fourth grounding point is arranged between the four ends, the third grounding point is used to be connected to the second switch circuit and grounded, and the fourth grounding point is used to be grounded; an electrical coupling gap is formed between the first end and the third end, and the first radiation branch and the second radiation branch are used to jointly support the reception and transmission of the first frequency band signal under the excitation of the feed source; when the first switch circuit and the second switch circuit are in the disconnected state, the first antenna generates a first radiation pattern; when the first switch circuit and the second switch circuit are in the on state, the first antenna generates a second radiation pattern; wherein the main radiation direction of the first radiation pattern is different from that of the second radiation pattern.

[0005] In a second aspect, a method for controlling an antenna is provided, the method is applied to an electronic device, the electronic device comprising: a feed source; a first antenna, comprising a first radiating branch and a second radiating branch; the first radiating branch comprises a first end and a second end, a feeding point is provided between the first end and the second end, a first grounding point is provided between the feeding point and the first end, a second grounding point is provided between the first grounding point and the first end, the feeding point is used to connect the feed source, the first grounding point is used to connect to a first switching circuit and to be grounded, and the second grounding point is used to be grounded; the second radiating branch comprises a third end and a fourth end, and a first grounding point is provided between the third end and the fourth end. A third grounding point is provided, and a fourth grounding point is provided between the third grounding point and the fourth end, the third grounding point is used to be connected to the second switch circuit and grounded, and the fourth grounding point is used to be grounded; an electrical coupling gap is formed between the first end and the third end, and the first radiation branch and the second radiation branch are used to jointly support the reception and transmission of the first frequency band signal under the excitation of the feed source; the method comprises: controlling the first switch circuit and the second switch circuit to be in an off state or a on state so that the first antenna generates a first radiation pattern or a second radiation pattern; wherein the main radiation direction of the first radiation pattern is different from that of the second radiation pattern.

[0006] An embodiment of the present application provides an electronic device, comprising: a feed source; a first antenna, comprising a first radiating branch and a second radiating branch; the first radiating branch comprises a first end and a second end, a feeding point is arranged between the first end and the second end, a first grounding point is arranged between the feeding point and the first end, a second grounding point is arranged between the first grounding point and the first end, the feeding point is used to connect the feed source, the first grounding point is used to connect to the first switch circuit and to be grounded, and the second grounding point is used to be grounded; the second radiating branch comprises a third end and a fourth end, a third grounding point is arranged between the third end and the fourth end, a fourth grounding point is arranged between the third grounding point and the fourth end, the third grounding point is used to connect to the second switch circuit and to be grounded, and the fourth grounding point is used to be grounded; an electrical coupling gap is formed between the first end and the third end, the first radiating branch and the second radiating branch are used to jointly support the transmission and reception of a first frequency band signal under the excitation of the feed source; when the first switch circuit and the second switch circuit are in an off state, the first antenna generates a first radiation pattern; when the first switch circuit and the second switch circuit are in an on state, the first antenna generates a second radiation pattern; wherein the main radiation directions of the first radiation pattern and the second radiation pattern are different. That is to say, according to the disconnection or conduction state of the first switch circuit and the second switch circuit, this scheme can make the first antenna generate a first radiation pattern or a second radiation pattern, thereby reconstructing the radiation pattern of the first antenna, and further helping to ensure the signal reception strength of the first antenna and improve the communication quality of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the radiation pattern of a Wi-Fi antenna provided in one embodiment of the present application.

[0008] Figure 2 for Figure 1 2D schematic diagram of the radiation pattern shown in .

[0009] Figure 3 It is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application.

[0010] Figure 4 for Figure 3 Schematic diagram of the structure of the first antenna shown in FIG.

[0011] Figure 5 for Figure 4 A schematic structural diagram of the first tuning circuit and the first switching circuit is shown in FIG.

[0012] Figure 6 for Figure 4 Schematic diagram of the structure of the second tuning circuit shown in FIG.

[0013] Figure 7 for Figure 4 Schematic diagram of the structure of the third tuning circuit and the second switching circuit shown in FIG.

[0014] Figure 8 for Figure 4 Schematic diagram of the structure of the first filtering circuit shown in FIG.

[0015] Fig. 9 It is a structural schematic diagram of an electronic device provided in another embodiment of the present application.

[0016] Fig.10 for Fig. 9 FIG. 4 is a schematic diagram of current distribution of the first antenna in state 1. FIG.

[0017] Fig.11 for Fig.10 Schematic diagram of the radiation pattern of the first radiation branch shown in FIG.

[0018] Fig.12 for Fig.10 Schematic diagram of the radiation pattern of the second radiation branch shown in FIG.

[0019] Fig.13 for Fig.10 Schematic diagram of the radiation pattern of the first antenna shown in FIG.

[0020] Fig.14 for Fig.13 2D schematic diagram of the radiation pattern shown in .

[0021] Fig.15 for Fig. 9 FIG. 4 is a schematic diagram of current distribution of the first antenna in state 2. FIG.

[0022] Fig.16 for Fig.15 Schematic diagram of the radiation pattern of the first antenna shown in FIG.

[0023] Fig.17 for Fig.16 2D schematic diagram of the radiation pattern shown in .

[0024] Fig.18 It is a schematic diagram of a curve of the total system efficiency of the first antenna in a free space scenario provided in an embodiment of the present application.

[0025] Fig.19 It is a schematic diagram of a curve of the total system efficiency of the first antenna in a hand-held scenario provided in an embodiment of the present application.

[0026] Fig. 20 It is a flowchart of a method for controlling an antenna provided in an embodiment of the present application.

[0027] Fig.21 It is a structural schematic diagram of an electronic device provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0029] With the development of electronic technology, electronic devices (such as mobile phones, tablet computers, etc.) are being used more and more widely. In addition to mobile calls, text messages and other communication services, electronic devices (such as mobile phones) can also be used for Internet access, video, games and other services. Therefore, the performance of the antenna of an electronic device (such as a Wi-Fi antenna) has a key impact on the user experience. However, the antenna still has the problem of low antenna efficiency in electronic devices. The following takes the Wi-Fi antenna in a mobile phone as an example to illustrate the antenna performance of an electronic device in detail.

[0030] It is understandable that in order to judge the performance of the Wi-Fi antenna in the mobile phone, in addition to the efficiency of the antenna, it is also necessary to examine the shape of the antenna's directional pattern (or gain directional pattern). When the user is indoors, in order to receive signals from all directions, the Wi-Fi antenna directional pattern is usually designed to be omnidirectional, that is, the energy in each radiation direction is balanced to avoid the "directional pattern zero point" in a certain direction, thereby avoiding the phenomenon of a sharp decline in the received signal strength of the electronic device. However, compared with directional antennas, omnidirectional antennas radiate lower energy in the direction of the radiation target, and because they have the ability to receive signals from all directions of the wave, they are prone to interference problems, or produce multipath effects, which will also lead to deterioration of communication quality. It should be noted that in the embodiment of the present application, the angle at which the gain is much smaller than the maximum gain can be referred to as the "directional pattern zero point."

[0031] Therefore, major mobile phone manufacturers still mainly use directional antennas. However, when designing antennas, engineers usually only consider whether the antenna efficiency meets the standards, and do not consider the impact of the directional pattern on communication quality. Figure 1 A possible antenna radiation pattern of the Wi-Fi antenna provided in an embodiment of the present application. Figure 1 The antenna radiation scheme in is the current mainstream Wi-Fi antenna design scheme. In order to ensure that the Wi-Fi antenna efficiency meets the standard, the Wi-Fi antenna is usually placed in the upper left corner (seen from the back cover of the mobile phone) where the radiation environment is better. At this time, most of the energy of the radiation pattern is radiated toward the lower right side, while the radiation energy on the upper left side is weaker. Figure 2 for Figure 1 The 2D schematic diagram of the radiation pattern shown in Figure 1 The radiation direction of the radiation field and the radiation energy in different directions. Figure 2 As shown in the figure, the radiation angle of the Wi-Fi antenna in the clockwise direction between 90° and 330° can be called the “null point of the directivity pattern”. Figure 1 The mobile phone is flipped 180° (i.e., viewed from the back cover of the mobile phone to viewed from the screen of the mobile phone), and then the electronic device is rotated 90° counterclockwise to obtain Figure 2 The location of the phone in .

[0032] Continue to see Figure 1 and Figure 2 Once the “directivity diagram zero point” points to the signal source (such as a Wi-Fi router or gateway, etc.), the signal reception strength of the mobile phone may decline sharply, which may easily lead to communication abnormalities.

[0033] In order to solve the above problems, an embodiment of the present application provides an electronic device, including: a feed source; a first antenna, including a first radiating branch and a second radiating branch; the first radiating branch includes a first end and a second end, a feeding point is provided between the first end and the second end, a first grounding point is provided between the feeding point and the first end, and a second grounding point is provided between the first grounding point and the first end, the feeding point is used to connect the feed source, the first grounding point is used to connect to the first switching circuit and be grounded, and the second grounding point is used to be grounded; the second radiating branch includes a third end and a fourth end, a third grounding point is provided between the third end and the fourth end, and the third grounding point is provided between the third end and the fourth end. A fourth grounding point is provided between the first end and the fourth end, the third grounding point is used to connect to and ground the second switch circuit, and the fourth grounding point is used to ground; an electrical coupling gap is formed between the first end and the third end, and the first radiation branch and the second radiation branch are used to jointly support the reception and transmission of the first frequency band signal under the excitation of the feed source; when the first switch circuit and the second switch circuit are in the disconnected state, the first antenna generates a first radiation pattern; when the first switch circuit and the second switch circuit are in the on state, the first antenna generates a second radiation pattern; wherein the main radiation directions of the first radiation pattern and the second radiation pattern are different. That is to say, according to the disconnection or on state of the first switch circuit and the second switch circuit, this scheme can enable the first antenna to generate the first radiation pattern or the second radiation pattern, thereby realizing the reconstruction of the radiation pattern of the first antenna, and further, it helps to ensure the signal reception strength of the first antenna and improve the communication quality of the electronic device.

[0034] Combined with the following Figure 3 The electronic device provided in the embodiment of the present application is described in detail. Figure 3 As shown, the electronic device 300 includes a feed source 310 and a first antenna 320 .

[0035] The feed source 310 may include but is not limited to a radio frequency transceiver chip and a radio frequency front-end circuit in the electronic device 300. The feed source 310 may be disposed on a main board of the electronic device 300.

[0036] The first antenna 320 may include a first radiation branch 330 and a second radiation branch 340. The first radiation branch 330 includes a first end 331 and a second end 332, a feeding point 333 is provided between the first end 331 and the second end 332, a first grounding point 334 is provided between the feeding point 333 and the first end 331, and a second grounding point 355 is provided between the first grounding point 334 and the first end 331. The feeding point 333 may be used to connect the feed source 310, and the first grounding point 334 may be used to connect to the first switch circuit 301 and be grounded. The second grounding point 355 may be used to be grounded. The second radiation branch 340 includes a third end 341 and a fourth end 342, a third grounding point 343 is provided between the third end 341 and the fourth end 342, and a fourth grounding point 344 is provided between the third grounding point 343 and the fourth end 342. The third grounding point 343 may be used to connect to the second switch circuit 302 and be grounded. The fourth grounding point 344 may be used to be grounded. An electrical coupling gap 321 is formed between the first end 331 and the third end 341, and the first radiation branch 330 and the second radiation branch 340 are used to jointly support the reception and transmission of the first frequency band signal under the excitation of the feed source 310. It should be understood that the resonant mode of the first radiation branch 330 and the resonant mode of the second radiation branch 340 can jointly support the reception and transmission of the first frequency band signal. It should be noted that when the first switch circuit 301 and the second switch circuit 302 are in the off state, the first antenna 320 can generate a first radiation pattern; when the first switch circuit 301 and the second switch circuit 302 are in the on state, the first antenna 320 can generate a second radiation pattern; wherein the main radiation directions of the first radiation pattern and the second radiation pattern are different.

[0037] In some embodiments, the first frequency band may be, for example, a Wi-Fi 2.4G frequency band. The lengths of the first radiation branch 330 and the second radiation branch 340 may both be about 24 mm, and the lengths of the first radiation branch 330 and the second radiation branch 340 may be adjusted according to actual conditions. It should be understood that when the first frequency band is a Wi-Fi 2.4G frequency band, the respective lengths of the first radiation branch 330 and the second radiation branch 340 are approximately in the range of one sixth to one third of the wavelength of 2.44 GHz.

[0038] In some embodiments, the electronic device 300 may further include a middle frame 303. The first antenna 320 may be connected to the middle frame 303 to achieve grounding.

[0039] In some embodiments, see Figure 4 The electronic device 300 may further include a first tuning circuit 350 . One end of the first tuning circuit 350 is connected to the first grounding point 334 , and the other end of the first tuning circuit 350 is grounded. The first tuning circuit 350 is used to adjust the resonance mode of the first radiation branch 330 .

[0040] As an example, see Figure 5 , the first tuning circuit 350 may include a first inductor L1, a first capacitor C1, a second inductor L2, and a second capacitor C2; the first inductor L1 is connected in parallel with the first capacitor C1, one end of the first inductor L1 and the first capacitor C1 is connected to one end of the second capacitor C2, the other end of the first inductor L1 and the first capacitor C1 is used for grounding, the other end of the second capacitor C2 is connected to the first grounding point, one end of the second inductor L2 is connected to the first grounding point, and the other end of the second inductor L2 is used for grounding. In some embodiments, the inductance value of the first inductor L1 is set to 6.8nH (nanohenry), the capacitance value of the first capacitor C1 is set to 0.5pF (picofarad), the inductance value of the second inductor L2 is set to 1.5nH, and the capacitance value of the second capacitor C2 is set to 1.9pF.

[0041] In some embodiments, the first switch circuit 301 may be a single-pole single-throw switch, and the first switch circuit 301 is connected in parallel with the first tuning circuit 350. The first grounding point 334 is used to be connected to the first switch circuit 301 and grounded.

[0042] In some embodiments, refer to Figure 4 The electronic device 300 may further include a second tuning circuit 360 . One end of the second tuning circuit 360 is connected to the second grounding point 335 , and the other end of the second tuning circuit 360 is grounded. The second tuning circuit 360 is used to adjust the resonance mode of the first radiation branch 330 .

[0043] As an example, see Figure 6 , the second tuning circuit 360 may include a third inductor L3 and a third capacitor C3; one end of the third inductor L3 is connected to one end of the third capacitor C3, the other end of the third inductor L3 is connected to the second grounding point, and the other end of the third capacitor C3 is used for grounding. In some embodiments, the inductance value of the third inductor L3 is set to 18nH, and the capacitance value of the third capacitor C3 is set to 0.3pF.

[0044] In some embodiments, refer to Figure 4 The electronic device 300 may further include a third tuning circuit 370 . One end of the third tuning circuit 370 is connected to the third grounding point 343 , and the other end of the third tuning circuit 370 is grounded. The third tuning circuit 370 is used to adjust the resonance mode of the second radiation branch 340 .

[0045] As an example, see Figure 7 The third tuning circuit 370 may include a fourth inductor L4; one end of the fourth inductor L4 is connected to the third grounding point 343, and the other end of the fourth inductor L4 is grounded. In some embodiments, the inductance value of the fourth inductor L4 is set to 4.3nH.

[0046] In some embodiments, the second switch circuit 302 may be a single-pole single-throw switch, and the second switch circuit 302 is connected in parallel with the third tuning circuit 370. The second grounding point 343 is used to connect to the second switch circuit 302 and to be grounded.

[0047] In some embodiments, refer to Figure 4 The electronic device 300 may further include a first tuning circuit 380. One end of the first filter circuit 380 is connected to the feeding point 333, and the other end of the first filter circuit 380 is grounded. The first filter circuit 380 is used to filter the signal sent by the feed source 310.

[0048] As an example, see Figure 8 , the first filter circuit 380 includes a fifth inductor L5 and a fourth capacitor C4; one end of the fifth inductor L5 is connected to one end of the fourth capacitor C4, the other end of the fifth inductor L5 is connected to the feeding point 333, and the other end of the fourth capacitor C4 is grounded. In some embodiments, the inductance value of the fifth inductor L5 is set to 6.2nH, and the capacitance value of the fourth capacitor C4 can be set to 3.4pF.

[0049] In some embodiments, by setting one or more of the first tuning circuit 350 , the second tuning circuit 360 , and the third tuning circuit 370 in the electronic device, the Wi-Fi 2.4G frequency band may be tuned to improve the efficiency of the first antenna 320 .

[0050] In other embodiments, by setting one or more of the first tuning circuit 350, the second tuning circuit 360 and the third tuning circuit 370 in the electronic device, the first antenna 320 can support the transmission and reception of the first frequency band signal. At this time, the first frequency band can include: GPS L1 frequency band (1565-1585MHz), Wi-Fi 2.4G frequency band (2400-2480MHz), Wi-Fi 5G frequency band (5150-5850MHz), NR-N78 frequency band (3400-3600MHz) One or more. Specifically, the first antenna can simultaneously support multiple frequency bands such as Wi-Fi 2.4G, GPS L1, N78, Wi-Fi 5G, etc., which belongs to a multi-band integrated solution, thereby helping to improve space utilization.

[0051] In some embodiments, the first radiation branch 330 may be located on the left side of the electronic device 300 (seen from the back cover of the electronic device), and the second radiation branch 340 may be located on the top of the electronic device. In some embodiments, the first radiation branch 330 may be L-shaped. When the first radiation branch 330 is L-shaped, the first radiation branch 330 may be located at the upper left corner of the electronic device.

[0052] In some embodiments, the first radiation branch 330 and the second radiation branch 340 may be inverted F antennas or similar inverted F antennas. It should be understood that the lengths of the first radiation branch 330 and the second radiation branch 340 may be adjusted as required, and this application does not impose any specific limitation on this.

[0053] It should be noted that the descriptions of the left side or upper left corner of the electronic device 300 mentioned below are all viewed from the back cover of the electronic device, unless otherwise specified.

[0054] In order to deepen the understanding of the electronic device 300 in the embodiment of the present application, the embodiment of the present application also provides another possible structural diagram of the electronic device 300. Fig. 9 As shown, the electronic device 300 further includes a reference ground 305 , a first connecting elastic sheet 306 , a second connecting elastic sheet 307 and a third connecting elastic sheet 308 .

[0055] The reference ground 305 may be, for example, a small board, a middle board, or a middle frame, etc. The first antenna 320 may be connected to the reference ground 305 to achieve grounding.

[0056] In some embodiments, one end of the first connecting spring 306 is connected to the first tuning circuit 350, and the other end of the first connecting spring 306 is connected to the first grounding point 334 through port 2; one end of the second connecting spring 307 is connected to the second tuning circuit 360, and the other end of the second connecting spring 307 is connected to the second grounding point 335 through port 1. One end of the third connecting spring 308 is connected to the third tuning circuit 370, and the other end of the third connecting spring 308 is connected to the third grounding point 343 through port 3. By providing the first connecting spring 306, the second connecting spring 307 and the third connecting spring 308, the connection difficulty between the tuning circuit and the first antenna 320 can be reduced and the connection efficiency can be improved. Of course, the first filter circuit 380 can also be connected to the first radiation branch 330 through the connecting spring, for example, one end of the connecting spring can be connected to the first filter circuit 380, and the other end can be connected to the feeding point 333 through port 4.

[0057] In some embodiments, refer to Figure 4 The electronic device 300 further includes a control circuit 390, which is connected to both the first switch circuit 301 and the second switch circuit 302. The control circuit 390 can be used to control the first switch circuit 301 and the second switch circuit 302 to be in an off state or an on state.

[0058] In some embodiments, the control circuit 390 may be used to control the first switch circuit 301 and the second switch circuit 302 to be in an off state or an on state according to the signal reception strength of the first antenna 320 in the first frequency band, so as to reconstruct the radiation pattern of the first antenna 320, so as to avoid the zero point of the pattern of the first antenna 320 corresponding to the direction of the signal wave, thereby effectively ensuring the signal reception strength of the first antenna 320, and further helping to improve the communication quality of the electronic device 300. It should be noted that the signal reception strength of the first antenna 320 may also be referred to as a received signal strength indication (RSSI).

[0059] In some embodiments, when the first switch circuit 301 and the second switch circuit 302 are in the disconnected state, the signal receiving strength of the first antenna 320 in the first frequency band is the first signal receiving strength; when the first switch circuit 301 and the second switch circuit 302 are in the on state, the signal receiving strength of the first antenna 320 in the first frequency band is the second signal receiving strength. On this basis, the control circuit 390 can be used to: in response to the first signal receiving strength being lower than the second signal receiving strength, control the first switch circuit 301 and the second switch circuit 302 to be in the on state; in response to the first signal receiving strength being not lower than the second signal receiving strength, control the first switch circuit 301 and the second switch circuit 302 to be in the disconnected state. It can be understood that the first signal receiving strength and the second signal receiving strength may change with changes in the surrounding environment or movement of the electronic device 300.

[0060] In some embodiments, when the first switch circuit 301 and the second switch circuit 302 are in an off state (for convenience of description, this state is referred to as state 1 below), the control circuit 390 can be used to: in response to the first signal reception strength being lower than the second signal reception strength, control the first switch circuit 301 and the second switch circuit 302 to be in an on state.

[0061] Further, the control circuit 390 can be used to: in response to the difference between the second signal reception strength and the first signal reception strength being greater than the first threshold, control the first switch circuit 301 and the second switch circuit 302 to be in the on state. In this way, the first switch circuit 301 and the second switch circuit 302 can be prevented from frequently switching between the on state and the off state. The first threshold can be set according to demand, and this application does not make any specific restrictions on this.

[0062] In some embodiments, a second threshold value may also be set. If the signal reception strength of the first antenna is not lower than the second threshold value, it indicates that the current signal reception strength meets the user's needs, and the switch state may not be switched, thereby reducing the control loss. As an example, when the first switch circuit 301 and the second switch circuit 302 are in the disconnected state, the control circuit 390 may be used to: in response to the first signal reception strength being lower than the second signal reception strength, and the first signal reception strength being lower than the second threshold value, control the first switch circuit 301 and the second switch circuit 302 to be in the on state. That is, if the first signal reception strength is not lower than the second threshold value, even if the first signal reception strength is lower than the second signal reception strength, there is no need to control the first switch circuit 301 and the second switch circuit 302 to be in the on state, and the first switch circuit 301 and the second switch circuit 302 may be kept in the disconnected state. The second threshold value may be set as required, and this application does not impose specific restrictions on this.

[0063] It should be noted that when the first switch circuit 301 and the second switch circuit 302 are in the on state (hereinafter referred to as state 2 for convenience of description), the control circuit 390 can be used to determine whether to switch from state 2 to state 1 according to the comparison result of the first signal reception strength and the second signal reception strength. Similar to the above method of switching from state 1 to state 2, it will not be repeated here.

[0064] In some embodiments, the control circuit 390 can be used to determine the signal reception strength of the first antenna 320 in the first frequency band (i.e., determine the first signal reception strength and the second signal reception strength) based on the average of multiple signal reception strengths of the first antenna 320 in the first frequency band before controlling the opening or closing of the first switch circuit 301 and the second switch circuit 302.

[0065] In some embodiments, the control circuit 390 may be used to determine the signal reception strength of the first antenna 320 on the first frequency band (i.e., determine the first signal reception strength and the second signal reception strength) according to the average value of the signal reception strength of the first antenna 320 on the first frequency band in the first time period before controlling the opening or closing of the first switch circuit 301 and the second switch circuit 302. The first time period may refer to a continuous time period, and the duration of the first time period may be set as required, and the present application does not impose any specific restrictions on this.

[0066] In some embodiments, the control circuit 390 may be used to control the first switch circuit 301 and the second switch circuit 302 to be in an open state or an open state according to the position of the electronic device and the main radiation direction of the first antenna.

[0067] In some embodiments, refer to Figure 4The electronic device 300 may further include a positioning module 304, which may be used to determine the relative position between the electronic device 300 and a signal source (not shown) outside the electronic device 300. The signal source may be a router or a gateway device, such as a Wi-Fi router or a Wi-Fi gateway.

[0068] As an example, the positioning module 304 can use Ultra Wide Band (UWB) technology to determine the relative position between the electronic device 300 and the signal source. Of course, the positioning module 304 can also use Bluetooth positioning technology to determine the relative position between the electronic device 300 and the signal source, and this application does not make specific restrictions on this.

[0069] In some embodiments, the positioning module 304 may include three UWB antenna units, and the electromagnetic waves are received by the three UWB antenna units. Since the electromagnetic waves from different directions have different paths to the three UWB antenna units, the time and phase of the electromagnetic waves received by the three UWB antenna units are different. Based on the different time and phase, one of the three UWB antenna units can be used for distance measurement, and the other two UWB antenna units can be used for angle measurement, so that the three parameters of the longitudinal angle, the latitudinal angle, and the distance can be calculated to achieve the positioning of the electronic device 300. Further, according to the position of the signal source, the relative position between the electronic device and the signal source can be determined. The relative position can be, for example: the electronic device is located on the left side of the signal source, the electronic device is located on the right side of the signal source, etc. It should be understood that the signal source is usually fixed, and the electronic device can obtain the position of the signal source in advance.

[0070] After determining the relative position between the electronic device 300 and the signal source, the relative position information can be sent to the control circuit 390 using the positioning module 304. Before controlling the on / off state of the first switch circuit 301 and the second switch circuit 302, the control circuit 390 can also obtain the main radiation direction of the radiation pattern of the first antenna 320. Then, the control circuit 390 can control the first switch circuit 301 and the second switch circuit 302 to be in an off state or an on state according to the relative position and the main radiation direction of the first antenna 320, so that the main radiation direction of the first antenna 320 corresponds to the position of the signal source, thereby helping to ensure the communication quality of the electronic device.

[0071] In one embodiment, refer again to Fig. 9It can be seen that the first radiation branch 330 and the second radiation branch 340 can be arranged on the left side and the top of the electronic device 300 respectively, and the relative positions of the first radiation branch 330 and the second radiation branch 340 are close. Furthermore, the first radiation branch 330 and the second radiation branch 340 can be coupled by the electric field through the electric coupling gap 321, and energy can be transferred by the electric field coupling. Therefore, the current amplitude and the current phase distribution on the first radiation branch 330 and the second radiation branch 340 can be controlled by controlling the first switch circuit 301 and the second switch circuit 302 to be in the off state or the on state, and then the radiation energy generated by the first radiation branch 330 and the second radiation branch 340 in the space can be controlled to be superimposed or offset each other, so that the radiation pattern of the first antenna 320 can be reconstructed. Next, Fig. 9 As an example, the first antenna 320 in Figure 10 to Figure 17 The current distribution and radiation pattern of the first antenna 320 in different states are described in detail with examples.

[0072] Fig.10 Schematic diagram of current distribution on the first antenna 320 provided in one embodiment of the present application. Fig.11 As shown, when the first switch circuit 301 and the second switch circuit 302 are in the disconnected state (state 1), under the excitation of the feed source 310, the first radiation branch 330 is excited to generate a current, and then the first radiation branch 330 and the second radiation branch 340 can be electrically coupled through the electrical coupling gap 321, and then the excitation current is transmitted to the second radiation branch 340 through the first radiation branch 330. The maximum operating current of the first antenna 320 is 47.5463A / m. The radiation field of the first antenna 320 in space can be regarded as the superposition of the radiation fields of the two antenna branches (the first radiation branch 330 and the second radiation branch 340) when they are excited separately.

[0073] Fig.11 for Fig.10 The radiation pattern of the first radiation branch 330 is shown in FIG. Fig.11 As shown, the energy of the first radiation branch 330 is mainly radiated toward the right hemisphere, and the energy radiated in the upper left corner is weak. The central operating frequency of the first radiation branch 330 is 2.44 GHz, the system radiation efficiency of the first radiation branch 330 is -3.925 dB, the total system efficiency of the first radiation branch 330 is -4.211 dB, and the actual gain of the first radiation branch 330 is -0.7255 dBi.

[0074] Fig.12 for Fig.10 The radiation pattern of the second radiation branch 340 is shown in FIG. Fig.12As shown, the energy of the second radiation branch 340 is evenly distributed in all directions of space, and there is no area with weak energy. The central operating frequency of the second radiation branch 340 is 2.44 GHz, the system radiation efficiency of the second radiation branch 340 is -2.669 dB, the total system efficiency of the second radiation branch 340 is -4.255 dB, and the actual gain of the second radiation branch 340 is -0.3330 dBi.

[0075] The radiation field (ie, radiation pattern) of the first antenna 320 can be regarded as the superposition of the radiation fields of the first radiation branch 330 and the second radiation branch 340. However, Fig.11 and Fig.12 The two radiation fields have different phases in space. The radiation field phases of the first radiation branch 330 and the second radiation branch 340 in the left hemisphere are relatively consistent, so the two radiation fields can achieve the effect of in-phase superposition. However, the phase difference in the right hemisphere is large, so part of the energy of the two radiation fields cancels each other out. Fig.11 and Fig.12 After the two radiation fields are superimposed in space, the final overall direction diagram is as follows Fig.13 That is to say, when the first switch circuit 301 and the second switch circuit 302 are in the disconnected state (state 1), the superimposed directivity pattern of the first antenna 320 radiates toward the left hemisphere as a whole, the central operating frequency of the first antenna 320 is 2.44 GHz, the system radiation efficiency of the first antenna 320 is -3.780 dB, the total system efficiency of the first antenna 320 is -4.198 dB, and the actual gain of the first antenna 320 is 1.264 dBi. The radiation energy in the left hemisphere accounts for 72.4% of the total radiation energy. Fig.14 for Fig.13 The 2D schematic diagram of the directional pattern shown in Fig.13 The radiation direction of the radiation field and the radiation energy in different directions.

[0076] Fig.15 FIG. 3 is a schematic diagram of current distribution on the first antenna 320 provided in another embodiment of the present application. Fig.15 As shown, when the first switch circuit 301 and the second switch circuit 302 are in the on state (state 2), the current of the first antenna 320 is mainly distributed on the first radiation branch 330, and most of the current on the first radiation branch 330 has been returned to the ground through port 2 and port 1, which results in less current on the second radiation branch 340 and weaker energy distribution. . Among them, the maximum operating current of the first antenna 320 is 47.3433A / m.

[0077] It is understandable that Fig.11 The radiation field of the first radiation branch 330 is similar. In state 2, Fig.15There is current in the first radiation branch 330, and its energy is mainly radiated toward the right hemisphere. In state 2, due to Fig.15 There is only a small amount of current radiation on the second radiation branch 340, and the second radiation branch 340 will only have a slight impact on the overall radiation pattern of the first antenna 320. Therefore, the radiation pattern of the first antenna 320 as a whole still radiates toward the right hemisphere, and the proportion of radiation energy in the right hemisphere is 73%. When the first switch circuit 301 and the second switch circuit 302 are in the on state (state 2), after the radiation fields of the first radiation branch 330 and the second radiation branch 340 are superimposed in space, the final overall radiation pattern is as follows Fig.16 See Fig.16 It can be seen that the central operating frequency of the first antenna 320 is 2.44 GHz, the system radiation efficiency of the first antenna 320 is -4.002 dB, the total system efficiency of the first antenna 320 is -4.033 dB, and the actual gain of the first antenna 320 is 0.1833 dBi. Fig.17 for Fig.16 A possible 2D schematic diagram of the directional pattern shown in Fig.16 The radiation direction of the radiation field and the radiation energy in different directions.

[0078] In some embodiments, Fig.16 The first antenna 320 in the embodiment can support the following operating frequency bands: 1565-1585MHz (GPS L1 band), 2400-2480MHz (Wi-Fi 2.4G band), 5150-5850MHz (Wi-Fi 5G band), 3400-3600MHz (NR-N78 band). In the free space scenario, in state 1 and state 2, the total system efficiency of the first antenna 320 on each frequency band is as follows: Fig.18 As shown in Table 1. In the scenario where the user holds the device in hand, in state 1 and state 2, the total system efficiency of the first antenna 320 in each frequency band is as follows: Fig.19 As shown in Table 2.

[0079] Table 1

[0080] Frequency band State 1(dB) State 2 (dB) Wi-Fi 2.4G -2.3 -2.7 Wi-Fi 5G -3.4 -5 GPS L1 -2.6 -5.4 N78 -3.6 -3.5

[0081] Table 2

[0082] Frequency band State 1(dB) State 2 (dB) Wi-Fi 2.4G -4.2 -4.2 Wi-Fi 5G -3.7 -5.6 GPS L1 -3.2 -5.8 N78 -4.2 -4

[0083] It should be noted that in the above Tables 1 and 2, the antenna efficiency values ​​of each frequency band in state 1 and state 2 are the in-band average values ​​of the respective frequency bands. Figure 4 and Fig. 9It can be seen that the first antenna 320 can be arranged at the upper left corner of the electronic device 300. According to the user's holding habit, when the user holds the electronic device 300, the upper left corner of the electronic device 300 is usually in an exposed state, that is, the user's hand is far away from the first antenna 320. Therefore, holding the electronic device 300 by hand has little effect on the radiation pattern of the first antenna 320.

[0084] According to the above description, the first antenna 320 has different radiation patterns in state 1 and state 2. In order to ensure the communication quality of the electronic device 300, the first scheme can be used to adjust state 1 and state 2. Taking the electronic device 300 as a mobile phone, the first antenna 320 as a Wi-Fi antenna, and the signal source as a Wi-Fi router as an example, the specific first scheme is as follows: the relative position of the mobile phone and the Wi-Fi router can be identified by the UWB module to determine whether the Wi-Fi router is located on the left or right side of the mobile phone (the screen direction can be used as a reference direction). Based on the above orientation judgment, the control circuit 390 can be used to switch the switching state of the first switch circuit 301 and the second switch circuit 302, so that it can be adjusted to state 1 or state 2. Furthermore, most of the energy of the first antenna 320 (i.e., the main radiation direction) can be directed toward the direction of the signal source side to ensure the communication quality of the electronic device 300.

[0085] In some embodiments, if the mobile phone does not have the hardware conditions (for example, the mobile phone may not include a UWB module), that is, the mobile phone cannot identify its relative position with the Wi-Fi router, in order to ensure the communication quality of the electronic device 300, the second scheme can be used to adjust state 1 and state 2. The specific second scheme is as follows: when the Wi-Fi antenna is working in state 1, if it is detected that the signal reception strength of the Wi-Fi antenna is poor (for example, lower than the second threshold value), the control circuit 390 is used to switch the Wi-Fi antenna to state 2. If the signal reception strength of the Wi-Fi antenna becomes stronger after switching to state 2, the Wi-Fi antenna is kept in state 2 for signal transmission and reception. If the signal reception strength of the Wi-Fi antenna becomes weaker after switching to state 2, the Wi-Fi antenna is switched to state 1 again for signal transmission and reception. It should be understood that the signal reception strength of the Wi-Fi antenna may refer to the average value of the signal reception strength over a period of time, or the average value of the signal reception strength of N samples, etc.

[0086] Based on the above content, it can be seen that compared with the traditional solution with fixed radiation pattern, this solution can ensure the antenna radiation energy intensity and effectively avoid communication interruption caused by "pattern zero point". Compared with the antenna solution with omnidirectional pattern, this solution can effectively improve the radiation intensity in the useful direction (such as the direction where the Wi-Fi router is located), thereby improving the communication quality and transmission speed.

[0087] It should be noted that the electronic device 300 mentioned in the embodiment of the present application can be any type of electronic device with wireless communication function. The electronic device 300 can be a portable mobile terminal or a handheld mobile terminal. For example, the electronic device 300 can be a smart phone (mobile phone), a tablet computer (Pad), a laptop computer, a PDA, a mobile internet device (mobile internet device, MID), a wearable device, a virtual reality (virtualreality, VR) device, an augmented reality (augmented reality, AR) device, etc., and the present application does not make specific restrictions on this.

[0088] Combination of the above Figures 1 to 19 The device embodiment of the present application is described in detail. Figure 20 to Figure 21 The method embodiment of the present application is described in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous device embodiment.

[0089] Fig. 20 A flow chart of a method for controlling an antenna provided for an embodiment of the present application. The method is applied to an electronic device, and the electronic device includes: a feed source; a first antenna, including a first radiating branch and a second radiating branch; the first radiating branch includes a first end and a second end, a feeding point is provided between the first end and the second end, a first grounding point is provided between the feeding point and the first end, a second grounding point is provided between the first grounding point and the first end, the feeding point is used to connect the feed source, the first grounding point is used to connect to the first switch circuit and to be grounded, and the second grounding point is used to be grounded; the second radiating branch includes a third end and a fourth end, a third grounding point is provided between the third end and the fourth end, a fourth grounding point is provided between the third grounding point and the fourth end, the third grounding point is used to connect to the second switch circuit and to be grounded, and the fourth grounding point is used to be grounded; an electrical coupling gap is formed between the first end and the third end, and the first radiating branch and the second radiating branch are used to jointly support the transmission and reception of signals in the first frequency band under the excitation of the feed source; as Fig. 20 As shown, the method 2000 includes step: S2010.

[0090] In step S2010, the first switch circuit and the second switch circuit are controlled to be in an off state or an on state so that the first antenna generates a first radiation pattern or a second radiation pattern; wherein the main radiation directions of the first radiation pattern and the second radiation pattern are different.

[0091] Optionally, controlling the first switch circuit and the second switch circuit to be in an off state or an on state includes: controlling the first switch circuit and the second switch circuit to be in an off state or an on state according to the signal reception strength of the first antenna in the first frequency band.

[0092] Optionally, when the first switch circuit and the second switch circuit are in the disconnected state, the signal reception strength of the first antenna on the first frequency band is the first signal reception strength; when the first switch circuit and the second switch circuit are in the on state, the signal reception strength of the first antenna on the first frequency band is the second signal reception strength; the controlling the first switch circuit and the second switch circuit to be in the disconnected state or the on state includes: in response to the first signal reception strength being lower than the second signal reception strength, controlling the first switch circuit and the second switch circuit to be in the on state; in response to the first signal reception strength being not lower than the second signal reception strength, controlling the first switch circuit and the second switch circuit to be in the disconnected state.

[0093] Optionally, when the first switch circuit and the second switch circuit are in an off state, controlling the first switch circuit and the second switch circuit to be in an on state includes: in response to the first signal reception strength being lower than the second signal reception strength, controlling the first switch circuit and the second switch circuit to be in an on state.

[0094] Optionally, controlling the first switch circuit and the second switch circuit to be in the on state includes: in response to a difference between the second signal reception strength and the first signal reception strength being greater than a first threshold, controlling the first switch circuit and the second switch circuit to be in the on state.

[0095] Optionally, the method also includes: determining the signal reception strength of the first antenna on the first frequency band based on the average of multiple signal reception strengths of the first antenna on the first frequency band; or determining the signal reception strength of the first antenna on the first frequency band based on the average of the signal reception strengths of the first antenna on the first frequency band within a first time period.

[0096] Optionally, controlling the first switch circuit and the second switch circuit to be in an off state or an on state includes: controlling the first switch circuit and the second switch circuit to be in an off state or an on state according to the position of the electronic device and the main radiation direction of the first antenna.

[0097] Optionally, controlling the first switch circuit and the second switch circuit to be in an off state or an on state includes: determining a relative position between the electronic device and a signal source outside the electronic device; and controlling the first switch circuit and the second switch circuit to be in an off state or an on state according to the relative position and a radiation pattern of the first antenna.

[0098] Combine the following Fig.21 The electronic device 2100 in the embodiment of the present application is introduced. The electronic device 2100 can be used to implement the method described in the above method embodiment.

[0099] It should be understood that the electronic device 2100 can be applied to any type of electronic device mentioned above.

[0100] The electronic device 2100 may include one or more processors 2110. The processor 2110 may support the electronic device 2100 to implement the method described in the foregoing method embodiment.

[0101] The processor 2110 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0102] The electronic device 2100 may further include one or more memories 2120. The memory 2120 stores a program, which can be executed by the processor 2110 to control the electronic device 2100 to execute the method described in the above method embodiment. The memory 2120 may be independent of the processor 2110 or integrated in the processor 2110.

[0103] The electronic device 2100 may further include a transceiver 2130. The processor 2110 may communicate with other devices through the transceiver 2130. For example, the processor 2110 may transmit and receive data with other devices through the transceiver 2130.

[0104] It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0105] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0106] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0107] In the several embodiments provided in the present application, it should be understood that the disclosed systems and devices can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0108] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple 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.

[0109] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0110] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can 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 the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0111] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electronic device, characterized in that: include: Feeds; The first antenna comprises a first radiation branch and a second radiation branch; The first radiation branch includes a first end and a second end, a feeding point is provided between the first end and the second end, a first grounding point is provided between the feeding point and the first end, a second grounding point is provided between the first grounding point and the first end, the feeding point is used to connect the feed source, the first grounding point is used to connect to the first switch circuit and be grounded, and the second grounding point is used to be grounded; The second radiation branch includes a third end and a fourth end, a third grounding point is provided between the third end and the fourth end, a fourth grounding point is provided between the third grounding point and the fourth end, the third grounding point is used to be connected to the second switch circuit and grounded, and the fourth grounding point is used to be grounded; An electrical coupling gap is formed between the first end and the third end, and the first radiation branch and the second radiation branch are used to jointly support the transmission and reception of a first frequency band signal under the excitation of the feed source; When the first switch circuit and the second switch circuit are in an open state, the first antenna generates a first radiation pattern; When the first switch circuit and the second switch circuit are in an on state, the first antenna generates a second radiation pattern; wherein the main radiation direction of the first radiation pattern is different from that of the second radiation pattern.

2. The electronic device according to claim 1, characterized in that: The electronic device further comprises: a first tuning circuit; One end of the first tuning circuit is connected to the first grounding point, and the other end of the first tuning circuit is used for grounding. The first tuning circuit is used to adjust the resonance mode of the first radiation branch.

3. The electronic device according to claim 2, characterized in that: The first tuning circuit comprises: A first inductor, a first capacitor, a second inductor, and a second capacitor; The first inductor is connected in parallel with the first capacitor, one end of the first inductor and the first capacitor is connected to one end of the second capacitor, the other end of the first inductor and the first capacitor is used for grounding, the other end of the second capacitor is connected to the first grounding point, one end of the second inductor is connected to the first grounding point, and the other end of the second inductor is used for grounding.

4. The electronic device according to claim 1, characterized in that: The electronic device further comprises: a second tuning circuit; One end of the second tuning circuit is connected to the second grounding point, and the other end of the second tuning circuit is used for grounding. The second tuning circuit is used to adjust the resonance mode of the first radiation branch.

5. The electronic device according to claim 4, characterized in that: The second tuning circuit comprises: a third inductor and a third capacitor; One end of the third inductor is connected to one end of the third capacitor, the other end of the third inductor is connected to the second grounding point, and the other end of the third capacitor is used for grounding.

6. The electronic device according to claim 1, characterized in that: The electronic device further comprises: A third tuning circuit; One end of the third tuning circuit is connected to the third grounding point, and the other end of the third tuning circuit is used for grounding. The third tuning circuit is used to adjust the resonance mode of the second radiation branch.

7. The electronic device according to claim 6, characterized in that: The third tuning circuit comprises: Fourth inductor; One end of the fourth inductor is connected to the third grounding point, and the other end of the fourth inductor is grounded.

8. The electronic device according to claim 1, characterized in that: The electronic device further comprises: a first filtering circuit; One end of the first filter circuit is connected to the feeding point, and the other end of the first filter circuit is grounded. The first filter circuit is used to filter the signal sent by the feed source.

9. The electronic device according to claim 8, characterized in that: The first filtering circuit comprises: a fifth inductor and a fourth capacitor; One end of the fifth inductor is connected to one end of the fourth capacitor, the other end of the fifth inductor is connected to the feeding point, and the other end of the fourth capacitor is grounded.

10. The electronic device according to claim 1, characterized in that: The electronic device further comprises: The control circuit is connected to the first switch circuit and the second switch circuit, and is used to control the first switch circuit and the second switch circuit to be in an off state or an on state.

11. The electronic device according to claim 10, characterized in that: The control circuit is used for: The first switch circuit and the second switch circuit are controlled to be in an off state or in an on state according to the signal reception strength of the first antenna in the first frequency band.

12. The electronic device according to claim 11, characterized in that: When the first switch circuit and the second switch circuit are in an off state, the signal receiving strength of the first antenna in the first frequency band is a first signal receiving strength; when the first switch circuit and the second switch circuit are in an on state, the signal receiving strength of the first antenna in the first frequency band is a second signal receiving strength; The control circuit is used for: In response to the first signal receiving strength being lower than the second signal receiving strength, controlling the first switch circuit and the second switch circuit to be in an on state; In response to the first signal reception strength being not lower than the second signal reception strength, the first switch circuit and the second switch circuit are controlled to be in an off state.

13. The electronic device according to claim 12, characterized in that: When the first switch circuit and the second switch circuit are in an off state, the control circuit is used to: In response to the first signal reception strength being lower than the second signal reception strength, the first switch circuit and the second switch circuit are controlled to be in an on state.

14. The electronic device according to claim 13, characterized in that: The control circuit is used for: In response to the difference between the second signal reception strength and the first signal reception strength being greater than a first threshold, the first switch circuit and the second switch circuit are controlled to be in an on state.

15. The electronic device according to claim 11, characterized in that: The control circuit is also used for: determining the signal reception strength of the first antenna in the first frequency band according to an average of multiple signal reception strengths of the first antenna in the first frequency band; or The signal reception strength of the first antenna in the first frequency band is determined according to an average value of the signal reception strength of the first antenna in the first frequency band in a first time period.

16. The electronic device according to claim 10, characterized in that: The control circuit is used for: The first switch circuit and the second switch circuit are controlled to be in an off state or in an on state according to the position of the electronic device and the main radiation direction of the first antenna.

17. The electronic device according to claim 16, characterized in that: The electronic device further comprises: A positioning module, used to determine the relative position between the electronic device and a signal source outside the electronic device; The control circuit is used for: The first switch circuit and the second switch circuit are controlled to be in an off state or in an on state according to the relative position and the radiation pattern of the first antenna.

18. The electronic device according to claim 17, characterized in that: The positioning module is used for: The relative position between the electronic device and the signal source is determined using ultra-wideband technology.

19. The electronic device according to claim 1, characterized in that: The first frequency band is the Wi-Fi 2.4G frequency band.

20. The electronic device according to any one of claims 1 to 19, characterized in that: The first switch circuit and the second switch circuit are single-pole single-throw switches.

21. The electronic device according to any one of claims 1 to 19, characterized in that: The first radiation branch is in an L-shape.

22. The electronic device according to any one of claims 1 to 19, characterized in that: The first radiation branch is located on the left side of the electronic device, and the second radiation branch is located on the top of the electronic device.

23. A method for controlling an antenna, characterized in that: The method is applied to an electronic device, wherein the electronic device comprises: Feeds; The first antenna comprises a first radiation branch and a second radiation branch; The first radiation branch includes a first end and a second end, a feeding point is provided between the first end and the second end, a first grounding point is provided between the feeding point and the first end, a second grounding point is provided between the first grounding point and the first end, the feeding point is used to connect the feed source, the first grounding point is used to connect to the first switch circuit and be grounded, and the second grounding point is used to be grounded; The second radiation branch includes a third end and a fourth end, a third grounding point is provided between the third end and the fourth end, a fourth grounding point is provided between the third grounding point and the fourth end, the third grounding point is used to be connected to the second switch circuit and grounded, and the fourth grounding point is used to be grounded; An electrical coupling gap is formed between the first end and the third end, and the first radiation branch and the second radiation branch are used to jointly support the transmission and reception of a first frequency band signal under the excitation of the feed source; The method comprises: Controlling the first switch circuit and the second switch circuit to be in an off state or an on state, so that the first antenna generates a first radiation pattern or a second radiation pattern; The main radiation directions of the first radiation pattern and the second radiation pattern are different.

24. The method according to claim 23, characterized in that The controlling the first switch circuit and the second switch circuit to be in an off state or an on state comprises: The first switch circuit and the second switch circuit are controlled to be in an off state or in an on state according to the signal reception strength of the first antenna in the first frequency band.

25. The method according to claim 24, characterized in that When the first switch circuit and the second switch circuit are in an off state, the signal receiving strength of the first antenna in the first frequency band is a first signal receiving strength; when the first switch circuit and the second switch circuit are in an on state, the signal receiving strength of the first antenna in the first frequency band is a second signal receiving strength; The controlling the first switch circuit and the second switch circuit to be in an off state or an on state comprises: In response to the first signal receiving strength being lower than the second signal receiving strength, controlling the first switch circuit and the second switch circuit to be in an on state; In response to the first signal reception strength being not lower than the second signal reception strength, the first switch circuit and the second switch circuit are controlled to be in an off state.

26. The method according to claim 25, characterized in that When the first switch circuit and the second switch circuit are in an off state, controlling the first switch circuit and the second switch circuit to be in an on state includes: In response to the first signal reception strength being lower than the second signal reception strength, the first switch circuit and the second switch circuit are controlled to be in an on state.

27. The method according to claim 26, characterized in that The controlling the first switch circuit and the second switch circuit to be in an on state includes: In response to the difference between the second signal reception strength and the first signal reception strength being greater than a first threshold, the first switch circuit and the second switch circuit are controlled to be in an on state.

28. The method according to claim 25, characterized in that The method further comprises: determining the signal reception strength of the first antenna in the first frequency band according to an average of multiple signal reception strengths of the first antenna in the first frequency band; or The signal reception strength of the first antenna in the first frequency band is determined according to an average value of the signal reception strength of the first antenna in the first frequency band in a first time period.

29. The method according to claim 23, characterized in that The controlling the first switch circuit and the second switch circuit to be in an off state or an on state comprises: The first switch circuit and the second switch circuit are controlled to be in an off state or in an on state according to the position of the electronic device and the main radiation direction of the first antenna.

30. The method according to claim 29, characterized in that The controlling the first switch circuit and the second switch circuit to be in an off state or an on state comprises: determining a relative position between the electronic device and a signal source external to the electronic device; The first switch circuit and the second switch circuit are controlled to be in an off state or in an on state according to the relative position and the radiation pattern of the first antenna.

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