An antenna system and electronic device

Abstract

The embodiment provides an antenna system and an electronic device, the antenna system comprises: a first antenna, the first antenna is used as a transmitting antenna and a receiving antenna of a target frequency band; a second antenna, the second antenna is the same as the first antenna; a third antenna, the third antenna is used as a receiving antenna of the target frequency band; a fourth antenna, the fourth antenna is the same as the third antenna; wherein, when the electronic device is in a target mode, the first antenna, the second antenna, the third antenna and the fourth antenna are all in a working state, so that the electronic device has two transmitting antennas and four receiving antennas.

Description

Technical Field

[0001] This embodiment relates to the field of antenna technology, and in particular to an antenna system and electronic device. Background Technology

[0002] For current antenna systems installed in electronic devices, achieving high-speed, high-strength signal radiation modes, such as co-frequency full-duplex mode (which involves simultaneously transmitting and receiving signals on the same frequency band), requires matching transmitting and receiving antennas to the signals within the same frequency band. This necessitates reserving considerable space on the electronic device for antenna placement, preventing its slim design. Furthermore, the antenna system itself generates self-interference at the transmitting end, meaning the transmitted signal can be received by the same receiver, causing interference. For example, current co-frequency full-duplex transceivers transmit and receive signals simultaneously on the same frequency resource. The transmitted signal leaks into the receiver, creating strong self-interference. This self-interference leads to a sharp deterioration in receiver performance.

[0003] Therefore, antenna systems typically cannot simultaneously receive and transmit information on the same frequency band. The main reason is that the signal from the transmitting end has a significant impact on the signal received by the local receiving end, causing distortion of the target signal received by the receiving end, or even being covered by noise signals. For a long time in the research and development of mobile communication systems, it was believed that simultaneous full-duplex operation on the same frequency was impossible, which is why wireless communication systems have always operated in half-duplex mode. Summary of the Invention

[0004] This embodiment provides an electronic device, the electronic device comprising:

[0005] The first antenna serves as both a transmitting antenna and a receiving antenna for the target frequency band.

[0006] The second antenna is the same as the first antenna;

[0007] The third antenna serves as the receiving antenna for the target frequency band.

[0008] The fourth antenna is the same as the third antenna;

[0009] When the electronic device is in target mode, the first antenna, the second antenna, the third antenna, and the fourth antenna are all in working condition, so that the electronic device has two transmitting antennas and four receiving antennas.

[0010] As an optional embodiment, the third antenna and the fourth antenna are located between the first antenna and the second antenna.

[0011] As an optional embodiment, in the first antenna, the second antenna, the third antenna, and the fourth antenna, the distance between two adjacent antennas is at least half the wavelength of the target frequency band.

[0012] As an alternative embodiment, the distance between two adjacent antennas is an odd multiple of half the wavelength of the target frequency band.

[0013] As an optional embodiment, the first antenna serves as the transmitting antenna of the target frequency band and radiates a first transmitting signal when in operation, and the second antenna serves as the transmitting antenna of the target frequency band and radiates a second transmitting signal when in operation, wherein the first transmitting signal and the second transmitting signal are the same;

[0014] When used as a receiving antenna for the target frequency band, the signals received at the first antenna, the second antenna, the third antenna, and the fourth antenna can be phase-cancelled.

[0015] As an optional embodiment, the electronic device further includes:

[0016] The radio frequency circuit is connected to the first antenna, the second antenna, the third antenna, and the fourth antenna, which are receiving antennas for the target frequency band, and is used to obtain a first received signal received by each of the receiving antennas and convert the first received signal into a second received signal, wherein the first received signal includes the first transmitted signal and the second transmitted signal.

[0017] As an optional embodiment, converting the first received signal into a second received signal includes:

[0018] The first transmitted signal included in the first received signal and the second transmitted signal included in the first received signal are subjected to phase cancellation processing.

[0019] As an optional embodiment, converting the first received signal into a second received signal further includes:

[0020] Phase cancellation is achieved by enhancing the first transmitted signal and / or the second transmitted signal.

[0021] As an optional embodiment, the electronic device further includes:

[0022] The first target electronic component is used to separate the transmitted signal and the received signal of the first antenna;

[0023] The second target electronic component is used to separate the transmitted signal and the received signal of the second antenna.

[0024] This other embodiment also provides an antenna system, including:

[0025] The first antenna serves as both a transmitting antenna and a receiving antenna for the target frequency band.

[0026] The second antenna is the same as the first antenna;

[0027] The third antenna serves as the receiving antenna for the target frequency band.

[0028] The fourth antenna is the same as the third antenna;

[0029] When the electronic device is in target mode, the first antenna, the second antenna, the third antenna, and the fourth antenna are all in working condition, so that the electronic device has two transmitting antennas and four receiving antennas.

[0030] The features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0031] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0033] Figure 1 This is a schematic diagram of the structure of the electronic device in the embodiments of this application.

[0034] Figure 2 This is a diagram showing the signal interference relationship of the electronic device in the embodiments of this application.

[0035] Figure 3 This is a signal interference diagram of an electronic device in another embodiment of this application.

[0036] Figure 4 This is a signal interference diagram of an electronic device in another embodiment of this application.

[0037] Figure 5 This is a signal interference diagram of an electronic device in another embodiment of this application. Detailed Implementation

[0038] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of the invention.

[0039] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the following description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this disclosure will be apparent to those skilled in the art.

[0040] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

[0041] These and other features of the invention will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0042] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of the present invention, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0043] The above and other aspects, features and advantages of this disclosure will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0044] Specific embodiments of the present disclosure are described thereafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure and can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the present disclosure. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of substantially any suitable detailed structures.

[0045] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in still another embodiment,” all of which may refer to one or more of the same or different embodiments according to this disclosure.

[0046] The following is a detailed description of this embodiment with reference to the accompanying drawings.

[0047] like Figure 1 As shown in the figure, this application provides an electronic device, which includes:

[0048] The first antenna serves as both a transmitting antenna and a receiving antenna for the target frequency band signal.

[0049] The second antenna is the same as the first antenna.

[0050] The third antenna serves as the receiving antenna for the target frequency band signal.

[0051] The fourth antenna is the same as the third antenna;

[0052] In the target mode, the first antenna, the second antenna, the third antenna, and the fourth antenna are all in operation, so that the electronic device has two transmitting antennas and four receiving antennas.

[0053] exist Figure 1 In this embodiment, the first antenna is the transceiver antenna 1, the second antenna is the transceiver antenna 2, the third antenna is the receiver antenna 3, and the fourth antenna is the receiver antenna 4. The electronic device described in this embodiment can achieve full-duplex mode at the same frequency while reducing the number of antennas. This means it can simultaneously transmit and receive signals in the target frequency band without interference. Specifically, by setting up identical first and second antennas that can function as both transmitters and receivers of the target frequency band signal, and simultaneously setting up third and fourth antennas as receivers, the electronic device can ensure that in the target mode, such as full-duplex mode, the first, second, third, and fourth antennas are all operational. This gives the electronic device two transmitter antennas and four receiver antennas, effectively enabling simultaneous transmission and reception of the target frequency band signal while effectively suppressing signal self-interference and ensuring better performance during signal transmission and reception.

[0054] In this embodiment, a first antenna, a second antenna, a third antenna, and a fourth antenna are configured. The first antenna and the second antenna can both be configured as signal transceiver antennas, meaning they have both the function of transmitting and receiving signals in the target frequency band. The second antenna and the third antenna are configured as receiving antennas, with the function of receiving signals in the target frequency band only. This configuration allows the target frequency band signal to be transmitted by two antennas and received by four antennas simultaneously, with no interference between the received and transmitted signals. Even if the target frequency band signal transmitted by the first antenna or the second antenna is received by the same antenna, it will not affect the signal receiving function of that antenna, nor will it interfere with other received signals.

[0055] Alternatively, in another embodiment, a first antenna and a second antenna can be provided. Both the first antenna and the second antenna are signal transceiver antennas, that is, both have the function of transmitting and receiving signals in the target frequency band. When the first antenna transmits a signal in the target frequency band, both the first antenna and the second antenna can receive the transmitted signal in the target frequency band. Similarly, when the second antenna transmits a signal in the target frequency band, both the first antenna and the second antenna can also receive the transmitted signal in the target frequency band. In this case, the electronic device has two transmitting antennas and two receiving antennas, which can also realize the same frequency full-duplex mode of the electronic device.

[0056] Alternatively, in another embodiment, a signal transceiver antenna can be provided, along with a matching receiving antenna. Multiple sets of this antenna can be set according to actual needs, with each set including both a signal transceiver antenna and a signal receiving antenna. For example, as in the aforementioned embodiment, two sets of the above antennas are provided; three, four, or five sets can also be provided, and the specific configuration is not unique.

[0057] Furthermore, in this embodiment, the third and fourth antennas are located between the first and second antennas, that is, the two receiving antennas are located between the two transmitting and receiving antennas. Alternatively, the first and second antennas can be positioned between the third and fourth antennas, that is, the third and fourth antennas are located outside the first and second antennas. Alternatively, the first antenna can be located between the third and fourth antennas, and the second antenna can be located on the side of the fourth antenna away from the first antenna. Or, the second antenna can be located between the third and fourth antennas, and the first antenna can be located on the side of the fourth antenna away from the second antenna. In other words, the first, second, third, and fourth antennas are alternately arranged.

[0058] like Figure 1 and Figure 2 As shown, the 2T4R antenna configuration proposed in this embodiment consists of two signal transmitting antennas and four signal receiving antennas. 2T4R generally uses two TRx antennas (signal transmitting and receiving antennas, such as the first antenna and the second antenna in this embodiment). These two antennas (TRx) generally have both transmitting and receiving functions. There are also two antennas that are purely receiving antennas (Rx), such as the third antenna and the fourth antenna in this embodiment. Because the simultaneous full-duplex mode requires the electronic device's antenna to transmit signals in the target frequency band while simultaneously receiving signals in the current frequency band, interference signals are generated when the signal transmitting and receiving antennas in the electronic device receive the signals transmitted by the transmitting and receiving antennas. This interference signal includes at least the signal received by the first antenna and the transmitted signal received by the second antenna and transmitted back to the first antenna. In other words, the other TRx antenna (the second antenna) will transmit the transmitted signal from the first antenna back to the receiving channel of the first antenna in space. These two interference signals can be defined as interference signal 1 and interference signal 2.

[0059] To eliminate interference signals, this embodiment achieves this by adjusting the layout of each antenna in the electronic device. Specifically, in this embodiment, the distance between any two adjacent antennas in the first, second, third, and fourth antennas is at least half the wavelength of the target frequency band. Specifically, it is half the wavelength of the center frequency of the target frequency band, which is the median frequency of the target frequency band. For example, if the frequency range of the target frequency band is 1GHz-2GHz, then its median frequency is 1.5GHz, so the distance between any two adjacent antennas is at least half the wavelength of 1.5GHz. That is, the distance between the first and third antennas, the third and fourth antennas, and the fourth antenna and the second antenna is at least half the wavelength of the target frequency band, such as half the wavelength of 1.5GHz as mentioned above.

[0060] In practical applications, the distance between two adjacent antennas can also be set to half the wavelength of an odd multiple of the target frequency band. For example, in the first, second, third, and fourth antennas, the distances between the first and third antennas, the third and fourth antennas, and the fourth antenna and the second antenna can all be half the wavelength of 1.5 target frequency bands, or half the wavelength of 2.5 target frequency bands, or even half the wavelength of 3 target frequency bands, etc., and the specific values ​​are not unique. Moreover, the distances between each pair of adjacent antennas can be the same, different, or not exactly the same. For example, the distances between the first and third antennas, the third and fourth antennas, and the fourth antenna and the second antenna can all be different, such as half the wavelength of 1.5 target frequency bands, half the wavelength of 2.5 target frequency bands, and half the wavelength of 1 target frequency band, respectively. Alternatively, the distance between the first and third antennas, and the distance between the fourth and second antennas are the same, but different from the distance between the third and fourth antennas; or the distance between the first and third antennas, and the distance between the third and fourth antennas are the same, but different from the distance between the second and fourth antennas, and so on.

[0061] The distances between the first antenna, the second antenna, the third antenna, and the fourth antenna are set in the above form because, in this embodiment, the interference signal is mainly canceled and eliminated by adjusting the phase of the interference signal at each antenna.

[0062] Specifically, in this embodiment, the first antenna serves as the transmitting antenna of the target frequency band and radiates a first transmitting signal when it is in working state. The second antenna serves as the transmitting antenna of the target frequency band and radiates a second transmitting signal when it is in working state. The first transmitting signal and the second transmitting signal are the same, that is, the first transmitting signal and the second transmitting signal have the same content and the same signal strength.

[0063] When used as a receiving antenna for the target frequency band, the signals received at the first antenna, the second antenna, the third antenna, and the fourth antenna can cancel each other out in phase.

[0064] For example, in Figure 2 In the diagram, the distance between any two adjacent antennas in the first, second, third, and fourth antennas is d. When d is half the wavelength of the target frequency band, the phase difference between interference signal 1 and interference signal 2 is 1.5 wavelengths. Each half-wavelength phase difference corresponds to a 180° phase difference, meaning they are out of phase. Therefore, by adjusting the amplitudes of the two interference signals to be the same, interference signal 1 and interference signal 2 can cancel each other out. Thus, when the first and second transmitted signals are identical, they can cancel each other out due to the distance between them being half the wavelength of the target frequency band and their opposite phases. Similarly, the third and fourth antennas can also cancel out the received first and second transmitted signals because their signal strengths are the same and their phases are opposite. Furthermore, if the strengths of the first and second transmitted signals received by the first and second antennas are different, the strengths of the first and second transmitted signals received by the third and fourth antennas can be superimposed to make the strengths of the transmitted signals in opposite phases the same, thus achieving mutual cancellation. This means that all interference signals in the antenna system consisting of the first, second, third, and fourth antennas can be eliminated without the need for additional signal attenuators or phase shifters to assist in signal cancellation, reducing setup costs and minimizing space occupied in electronic equipment.

[0065] For example, continue to combine Figure 1 and Figure 2 As shown, based on the interference signal 1 and interference signal 2 described in the foregoing embodiments, the strength of interference signal 1 is... Where A1 represents the amplitude of the interference signal, which is related to the power of the transmitting antenna and the spatial signal attenuation. x(t) represents the baseband signal. This is the phase factor; the first term is related to frequency and time, and the second term is related to the antenna's location. The strength of interference signal 2 is... To achieve phase cancellation between interference signal 1 and interference signal 2, the distance d between the first antenna and the second antenna must be at least the wavelength of the target frequency band. λ Half of (in this embodiment, d = 1.5) between the first antenna and the second antenna. λ Furthermore, the two signals must have the same strength, such as:

[0066] Therefore, the phase angle between the first antenna and the second antenna is... Based on these two factors, the aforementioned interference signal 1 and interference signal 2 can be mutually canceled out.

[0067] For example, combining Figure 3 As shown, simultaneous full-duplex mode requires the antenna of the electronic device to transmit signals in the target frequency band while simultaneously receiving signals in the current frequency band. However, because the transmitting and receiving antennas will re-receive the transmitted signals, forming interference signals, these interference signals include at least the transmitted signal received by the second antenna and the transmitted signal received by the first antenna and relayed back to the second antenna. In other words, the other TRx antenna (the first antenna) will relay the transmitted signal from the second antenna back to its receiving channel in space. These two interference signals can be defined as interference signal 3 and interference signal 4. As mentioned above, the distance between the first antenna and the second antenna is d = 1.5λ, therefore the phase angle between the first antenna and the second antenna is... Interference signal 3 and interference signal 4 have the same signal strength, and are respectively:

[0068]

[0069]

[0070] Since interference signal 3 and interference signal 4 have opposite phases and the same signal strength, they can cancel each other out.

[0071] Furthermore, the electronic device in this embodiment also includes:

[0072] The radio frequency circuit is connected to a first antenna, a second antenna, a third antenna, and a fourth antenna, which are receiving antennas for the target frequency band, and is used to obtain a first received signal received by each receiving antenna and convert the first received signal into a second received signal, wherein the first received signal includes a first transmitted signal and a second transmitted signal.

[0073] Among them, the radio frequency circuit is Figure 1 The RF interference cancellation module in this embodiment integrates and processes the received signals from the antenna system to eliminate all interference signals and retain the effective signal, thereby achieving interference suppression. The first received signal includes all signals received by the antennas, including interference signals, while the second received signal, after conversion processing, is the effective signal retained after removing interference signals.

[0074] Specifically, in this embodiment, converting the first received signal into a second received signal includes:

[0075] The first transmitted signal included in the first received signal and the second transmitted signal included in the first received signal are phase canceled.

[0076] For example, such as Figure 1 and Figure 4 As shown, the third antenna is Figure 4 The middle receiving antenna 3 is able to receive signals from the first antenna, i.e. Figure 4 The transceiver antenna 1 in the middle, and the second antenna, that is Figure 4 The transceiver antenna 2 in the middle emits a first transmitted signal and a second transmitted signal, respectively. The first transmitted signal is equivalent to... Figure 4 Interference signal 5 in the middle, the second transmitted signal is equivalent to Figure 4 Interference signal 6. Continuing with the figure, in this embodiment, the distance between the first antenna and the third antenna is d, and the distance between the second antenna and the third antenna is 2d. Therefore, the signal strength of the first transmitted signal, the signal strength of the second transmitted signal, and the phase difference between the first transmitted signal and the second transmitted signal are respectively:

[0077]

[0078]

[0079]

[0080] Based on the above formula, the phase difference between the first transmitted signal and the second transmitted signal is half the wavelength of the target frequency band. The first transmitted signal and the second transmitted signal are the same signal, that is, the signal strength is the same. Therefore, the first transmitted signal and the second transmitted signal are signals with the same strength but opposite phase. Thus, the radio frequency circuit can achieve phase cancellation processing of the first transmitted signal and the second transmitted signal in the first received signal, thereby successfully removing the interference signal in the first received signal and retaining the effective signal.

[0081] For example, such as Figure 1 and Figure 5 As shown, the fourth antenna is Figure 5 The middle receiving antenna 4 is able to receive signals from the first antenna, i.e. Figure 5 The transceiver antenna 1 in the middle, and the second antenna, that is Figure 5 The transceiver antenna 2 in the middle emits a first transmitted signal and a second transmitted signal, respectively. The first transmitted signal is equivalent to... Figure 5 Interference signal 7 in the middle, the second transmitted signal is equivalent to Figure 5 Interference signal 8. Continuing with the figure, in this embodiment, the distance between the first antenna and the fourth antenna is 2d, and the distance between the second antenna and the fourth antenna is d. Therefore, based on the aforementioned embodiments, it can be known that the phase difference between the first transmitted signal and the second transmitted signal is half the wavelength of the target frequency band. Simultaneously, the signal strengths of the first transmitted signal and the second transmitted signal are respectively:

[0082]

[0083]

[0084] Therefore, based on the above, it can be seen that in this embodiment, the phase difference between the first transmitted signal and the second transmitted signal is half the wavelength of the target frequency band, and the first transmitted signal and the second transmitted signal are the same signal, that is, the signal strength is the same. So the first transmitted signal and the second transmitted signal are signals with the same strength but opposite phase. Therefore, the radio frequency circuit can achieve phase cancellation processing of the first transmitted signal and the second transmitted signal in the first received signal, so as to successfully remove the interference signal in the first received signal and retain the effective signal.

[0085] Furthermore, converting the first received signal into the second received signal also includes:

[0086] Phase cancellation is achieved by enhancing the first transmitted signal and / or the second transmitted signal.

[0087] For example, when the distance between antennas in an electronic device is not just half a wavelength of the target frequency band, but an odd multiple of half a wavelength of the target frequency band, and the distance between adjacent antennas is unequal, it can easily lead to differences in the strength of the first or second transmitted signal received by the receiving antenna or the transceiver antenna. If the distance between the first and third antennas, or between the second and third antennas, differs significantly, such as by 5 or 6 half wavelengths of the target frequency band, even if the phase difference between the first and second transmitted signals received by the third antenna satisfies the condition of phase reversal, the difference in signal strength between the first and second transmitted signals prevents complete phase cancellation. Therefore, to improve this phenomenon and effectively cancel all interference signals, the radio frequency circuit in this embodiment adjusts the strength of the interference signal, such as by enhancing the first or second transmitted signal to make their strengths equal, thereby achieving cancellation. For example, when the strength of the first transmitted signal is higher than that of the second transmitted signal, the radio frequency (RF) circuit can enhance the second transmitted signal based on the strength difference between the two signals, thereby achieving the same signal strength. Conversely, when the strength of the second transmitted signal is higher than that of the first transmitted signal, the RF circuit can enhance the first transmitted signal based on the strength difference between the two signals, thereby achieving the same signal strength. Alternatively, the RF circuit can simultaneously enhance the first and second transmitted signals to different degrees based on the strength difference between them, so that the two signals have the same strength but opposite phase, thus achieving cancellation and effectively reducing interference from interfering signals to the antenna system. Furthermore, the aforementioned enhancement processing can also include signal duplication processing, that is, enhancing the first and / or second transmitted signals by duplicating the signals; the specific enhancement method is not unique.

[0088] Furthermore, continue to combine Figure 1 As shown, the electronic device in this embodiment further includes:

[0089] The first target electronic component is used to separate the transmitted and received signals of the first antenna;

[0090] The second target electronic component is used to separate the transmitted and received signals of the second antenna.

[0091] Specifically, in this embodiment, the first and second target electronic components are circulators, which have the ability to separate the transmitted and received signals of the first antenna. Therefore, in this embodiment, a circulator needs to be configured below each of the two transceiver antennas. Each circulator can place the received and transmitted signals of the connected transceiver antennas into two different channels of that antenna. However, in reality, there is no ideal circulator; some transmitted signal will always leak into the receiving channel, which greatly affects the received signal (generally, the strength of the transmitted signal is millions of times stronger than the received signal). Therefore, the received signal of the transceiver antenna will contain the signal it received from the antenna, as well as the signal leaked into the receiving channel by the circulator. Both of these signals are interference signals and therefore need to be canceled. In addition, in this embodiment, the first and second target electronic components are simultaneously connected to the radio frequency (RF) circuit to transmit the received signal to the RF circuit, where the RF circuit identifies and cancels the interference signals in the received signal.

[0092] Another embodiment of this application provides an antenna system, including a first antenna as described in any of the embodiments above, the first antenna serving as both a transmitting antenna and a receiving antenna for the target frequency band; a second antenna, identical to the first antenna; a third antenna, serving as a receiving antenna for the target frequency band; and a fourth antenna, identical to the third antenna; wherein, when the electronic device is in target mode, the first antenna, the second antenna, the third antenna, and the fourth antenna are all operational, so that the electronic device has two transmitting antennas and four receiving antennas.

[0093] The electronic device can be, for example, a mobile phone, tablet computer, or laptop computer. In practical applications, the antennas in the antenna system can be located on the top, bottom, or side of the electronic device, with no fixed location. Multiple antennas can be arranged centrally or distributed, such as centrally on the top or side of the electronic device, or distributed across the top and side of the electronic device.

[0094] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. An electronic device, the electronic device comprising: The first antenna serves as both a transmitting antenna and a receiving antenna for the target frequency band. The second antenna is the same as the first antenna; The third antenna serves as the receiving antenna for the target frequency band; A fourth antenna, which is the same as the third antenna; When the electronic device is in full-duplex mode, the first antenna, the second antenna, the third antenna, and the fourth antenna are all in working condition, so that the electronic device has two transmitting antennas and four receiving antennas for the target frequency band; when the first antenna is in working condition, it radiates a first transmitting signal, and when the second antenna is in working condition, it radiates a second transmitting signal, and the first transmitting signal and the second transmitting signal are the same. The first transmitted signal and the second transmitted signal satisfy the condition of mutual cancellation in phase at the first antenna, the second antenna, the third antenna, and the fourth antenna.

2. The electronic device according to claim 1, characterized in that, The third antenna and the fourth antenna are located between the first antenna and the second antenna.

3. The electronic device according to claim 2, characterized in that, In the first antenna, the second antenna, the third antenna, and the fourth antenna, the distance between any two adjacent antennas is at least half the wavelength of the target frequency band.

4. The electronic device according to claim 3, characterized in that, The distance between two adjacent antennas is an odd multiple of half the wavelength of the target frequency band.

5. The electronic device according to claim 1, characterized in that, The electronic device also includes: The radio frequency circuit is connected to the first antenna, the second antenna, the third antenna, and the fourth antenna, which are receiving antennas for the target frequency band, and is used to obtain a first received signal received by each of the receiving antennas and convert the first received signal into a second received signal, wherein the first received signal includes the first transmitted signal and the second transmitted signal.

6. The electronic device according to claim 5, characterized in that, Converting the first received signal into the second received signal includes: The first transmitted signal included in the first received signal and the second transmitted signal included in the first received signal are subjected to phase cancellation processing.

7. The electronic device according to claim 6, characterized in that, Converting the first received signal into the second received signal further includes: Phase cancellation is achieved by enhancing the first transmitted signal and / or the second transmitted signal.

8. The electronic device according to claim 1, characterized in that, The electronic device also includes: The first target electronic component is used to separate the transmitted signal and the received signal of the first antenna; The second target electronic component is used to separate the transmitted signal and the received signal of the second antenna.

9. An antenna system, comprising: The first antenna serves as both a transmitting antenna and a receiving antenna for the target frequency band. The second antenna is the same as the first antenna; The third antenna serves as the receiving antenna for the target frequency band; A fourth antenna, which is the same as the third antenna; When the antenna system is in full-duplex mode, the first antenna, the second antenna, the third antenna, and the fourth antenna are all in operation, so that the antenna system has two transmitting antennas and four receiving antennas for the target frequency band; when the first antenna is in operation, it radiates a first transmitted signal, and when the second antenna is in operation, it radiates a second transmitted signal, and the first transmitted signal and the second transmitted signal are the same. The first transmitted signal and the second transmitted signal satisfy the condition of mutual cancellation in phase at the first antenna, the second antenna, the third antenna, and the fourth antenna.

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