Wireless communication device and operation method thereof

Abstract

The invention relates to a wireless communication device and an operation method thereof. A wireless communication device includes a first antenna, a second antenna, and a power combiner. The first antenna, the second antenna and the interference source have a fixed positional relationship. The power combiner is respectively coupled to the first antenna and the second antenna through the first signal path and the second signal path. The power combiner is configured to receive a first noise and a second noise caused by an interference source through a first signal path and a second signal path, respectively. The power combiner is also configured to combine the first noise and the second noise. Based on the fixed position relationship, the first noise and the second noise received by the power combiner have a target phase difference and a target amplitude ratio, so that the first noise and the second noise form destructive interference at the power combiner.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to wireless communication technology, and in particular, to a wireless communication device capable of suppressing interference in real time and an operating method thereof. BACKGROUND

[0002] With the rapid development of wireless communication, users have increasingly high requirements for the data transmission bandwidth of wireless communication products. Therefore, the interface for transmitting data outside the wireless communication product is mostly a high-speed digital transmission interface, such as a universal serial bus (USB) 3.2, a peripheral component interconnect express (PCI-E), or a thunderbolt. However, the high-speed clock signal used by the high-speed digital transmission interface can interfere with the wireless communication signal and even cause a cover station. In addition, in the case of a wireless communication product being a controlled slave device (for example, a wireless network card), when the host accesses through the high-speed digital transmission interface, the wireless communication signal will be interfered, but the wireless communication product cannot predict the time point of the host access, so it cannot start the interference suppression mechanism in advance. SUMMARY

[0003] The present disclosure provides a wireless communication device, which includes a first antenna, a second antenna, and a power combiner. The first antenna, the second antenna, and an interference source have a fixed positional relationship. The power combiner is coupled to the first antenna and the second antenna through a first signal path and a second signal path, respectively. The power combiner is configured to receive a first noise and a second noise caused by the interference source through the first signal path and the second signal path, respectively. The power combiner is further configured to combine the first noise and the second noise. Based on the fixed positional relationship, the first noise and the second noise received by the power combiner have a target phase difference and a target amplitude ratio, so that the first noise and the second noise form destructive interference at the power combiner.

[0004] The present disclosure provides an operating method applicable to a wireless communication device. The wireless communication device includes a first antenna, a second antenna, and a power combiner. The first antenna, the second antenna, and an interference source have a fixed positional relationship. The power combiner is coupled to the first antenna and the second antenna through a first signal path and a second signal path, respectively. The operating method includes the following steps: receiving, by the power combiner, a first noise and a second noise caused by the interference source through the first signal path and the second signal path, respectively; and combining, by the power combiner, the first noise and the second noise. Based on the fixed positional relationship, the first noise and the second noise received by the power combiner have a target phase difference and a target amplitude ratio, so that the first noise and the second noise form destructive interference at the power combiner.

[0005] One of the advantages of the above-mentioned wireless communication device and operating method is that it can suppress the interference caused by noise with the characteristics of random generation, high frequency, and amplitude time variation in real time. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 Simplified functional block diagram of a wireless communication device according to an embodiment of the present disclosure.

[0007] Figure 2A Simplified functional block diagram of a wireless communication device according to an embodiment of the present disclosure.

[0008] Figure 2B Simplified functional block diagram of a wireless communication device according to another embodiment of the present disclosure.

[0009] Figure 3 Simplified functional block diagram of a wireless communication device according to an embodiment of the present disclosure.

[0010] Figure 4 Simplified flowchart of an operation method according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0011] Embodiments of the present disclosure will be described below with reference to the accompanying drawings. In the drawings, like reference numerals indicate like or similar elements or method flows.

[0012] Figure 1 Simplified functional block diagram of a wireless communication device 100 according to an embodiment of the present disclosure. The wireless communication device 100 includes a substrate SB, and includes a first antenna 110, a second antenna 120, a power combiner 130, a computing circuit 140, and an interference source 150 disposed on the substrate SB. The first antenna 110, the second antenna 120, and the interference source 150 have a fixed positional relationship. For example, when taking the interference source 150 as a reference point, the first antenna 110 and the second antenna 120 are located at fixed relative positions with respect to the interference source 150. The interference source 150 is coupled to the computing circuit 140 for communicatively connecting the computing circuit 140 to an external computing device (not shown, such as a personal computer). In some embodiments, the wireless communication device 100 can be a wireless network card, and the interference source 150 can be a high-speed digital transmission interface, such as a Universal Serial Bus (USB) 3.2, Peripheral Component Interconnect Express (PCI-E), or Thunderbolt electronic device.

[0013] The power combiner 130 is coupled to the first antenna 110 and the second antenna 120 via the first signal path L1 and the second signal path L2, respectively. When the first antenna 110 and the second antenna 120 are interfered by the interference source 150, the first antenna 110 and the second antenna 120 generate the first noise N1 and the second noise N2, respectively. The power combiner 130 is configured to receive the first noise N1 and the second noise N2 caused by the interference source 150 via the first signal path L1 and the second signal path L2, respectively. The power combiner 130 is further configured to combine the first noise N1 and the second noise N2.

[0014] Based on the fixed positional relationship among the first antenna 110, the second antenna 120 and the interference source 150, the first noise N1 and the second noise N2 received by the power combiner 130 have a target phase difference and a target amplitude ratio, so that the first noise N1 and the second noise N2 destructively interfere with each other in the power combiner 130, thereby improving the signal-to-noise ratio of the first antenna 110 and the second antenna 120. The fixed positional relationship can include the following conditions: (1) the first antenna 110 is spaced apart from the interference source 150 by a first distance D1; and (2) the second antenna 120 is spaced apart from the interference source 150 by a second distance D2. In some embodiments, the target phase difference is between -160 and -180 degrees, or between 160 and 180 degrees. In other embodiments, the target amplitude ratio is between 1:0.8 and 1:1.2. Since the first noise N1 and the second noise N2 are approximately opposite in phase and approximately equal in amplitude when they are transmitted to the power combiner 130, the first noise N1 and the second noise N2 destructively interfere with each other when they are combined in the power combiner 130.

[0015] To increase design flexibility, in some embodiments, the phase and the amplitude of the first noise N1 when it is transmitted to the power combiner 130 can be determined not only by adjusting the first distance D1, but also by adjusting the length of the first signal path L1. Similarly, the phase and the amplitude of the second noise N2 when it is transmitted to the power combiner 130 can be determined by adjusting the second distance D2 and the length of the second signal path L2. In summary, based on the fixed positional relationship, the length of the first signal path L1 and the length of the second signal path L2, the first noise N1 and the second noise N2 received by the power combiner 130 have a target phase difference and a target amplitude ratio.

[0016] In addition, when the first antenna 110 and the second antenna 120 receive wireless signals from an external signal source ES (e.g., a Wi-Fi base station), the first antenna 110 and the second antenna 120 generate a first main signal Ml and a second main signal M2, respectively. The power combiner 130 is configured to receive the first main signal Ml and the second main signal M2 caused by the external signal source ES through the first signal path Ll and the second signal path L2, respectively. The power combiner 130 is further configured to combine the first main signal Ml and the second main signal M2 such that the first main signal Ml and the second main signal M2 constructively interfere at the power combiner 130, thereby improving the signal-to-noise ratio.

[0017] Based on the relationship between the first antenna 110, the second antenna 120, the first signal path Ll, and the second signal path L2, destructive interference occurs when the signal source is located in a certain area, which can be considered as a communication blind zone of the wireless communication device 100. In one embodiment, the location of the communication blind zone can be adjusted by adjusting the length of the first signal path Ll or the second signal path L2, such that the interference source 150 falls into the communication blind zone (destructive interference occurs), thereby causing the first noise Nl and the second noise N2 to cancel each other out. On the other hand, since the external signal source ES is located at a considerable distance from the wireless communication device 100 (e.g., a Wi-Fi base station is usually tens of centimeters or several meters away from a personal computer), the length of the first signal path Ll or the second signal path L2 can be adjusted to adjust the location of the communication blind zone, such that the external signal source ES falls outside the communication blind zone of the wireless communication device 100, thereby causing the first main signal Ml and the second main signal M2 to constructively interfere at the power combiner 130.

[0018] The power combiner 130 is configured to generate an output signal Sout to the operation circuit 140 based on the first main signal Ml, the second main signal M2, the first noise Nl, and the second noise N2. The operation circuit 140 is configured to perform signal processing on the output signal Sout, such as demodulation, filtering, and analog-to-digital conversion. The interference source 150 (e.g., a high-speed digital communication interface) can then output the results of the signal processing performed by the operation circuit 140 to the outside.

[0019] In summary, by using a dual-antenna design, the wireless communication device 100 can simultaneously suppress noise and increase the amplitude of the main signal, thereby improving the signal-to-noise ratio. In addition, since the wireless communication device 100 cancels the two noise signals received by the two antennas from each other, the wireless communication device 100 can suppress interference in real time even if the noise has characteristics such as random generation, high frequency, and time-varying amplitude.

[0020] Figure 2AA simplified functional block diagram of a wireless communication device 200 according to an embodiment of the present disclosure is shown in FIG. 2. The first antenna 210, the second antenna 220, the power combiner 230, the operation circuit 240, and the interference source 250 of the wireless communication device 200 are similar to the corresponding functional blocks or elements of the wireless communication device 100 of FIG. 1, and thus are not repeated here for brevity. Figure 1

[0021] The wireless communication device 200 further includes at least one of a first amplitude control circuit 260 and a first phase control circuit 270. The at least one of the first amplitude control circuit 260 and the first phase control circuit 270 is disposed in the first signal path LI and coupled between the first antenna 210 and the power combiner 230. In embodiments in which the wireless communication device 200 includes both the first amplitude control circuit 260 and the first phase control circuit 270, the first amplitude control circuit 260 and the first phase control circuit 270 are coupled in series between the first antenna 210 and the power combiner 230.

[0022] In some embodiments, the first distance Dl, the second distance D2, the length of the first signal path LI, and / or the length of the second signal path L2 can not be designed such that the first noise Nl and the second noise N2 destructively interfere at the power combiner 230 due to layout constraints. In such cases, the first amplitude control circuit 260 and the first phase control circuit 270 can improve the design flexibility of the wireless communication device 200, as will be described in subsequent paragraphs.

[0023] It is noted that for the fixed interference source 150, both the first antenna 110 and the second antenna 120 receive and combine to produce an output signal Sout, which includes a noise component of the first noise Nl and the second noise N2. The noise component of the output signal Sout can be expressed as follows:

[0024] Nl + N2 = a0 cos x + a1 cos y

[0025] where a0 is the amplitude of the first noise Nl, x is the phase of the first noise Nl, a1 is the amplitude of the second noise N2, and y is the phase of the second noise N2. As described in the above embodiments, if a0 = a1 and x = y + 180°, the first noise Nl and the second noise N2 destructively interfere, such that a0 cos x + a1 cos y = 0, and thus the noise component of the output signal Sout is zero.

[0026] ​It is noted that while some embodiments of the present disclosure are described in terms of adjusting both the first antenna 110 and the second antenna 120 to destructively interfere with each other, in other embodiments, the present disclosure is not limited to two antennas. For example, the wireless communication device 200 can include three sets of antennas (or more sets of antennas). In this example, the noise component of the output signal Sout can be:

[0027] The noise component of Sout = N1 + N2 + N3 = a0 cos x + a1 cos y + a2 cos z

[0028] In this case, a0 is the amplitude of the first noise N1, x is the phase of the first noise N1, a1 is the amplitude of the second noise N2, y is the phase of the second noise N2, a2 is the amplitude of the third noise N3 (not shown in the figure) of the third antenna, and z is the phase of the third noise N3 (not shown in the figure). In this example, as described in the above embodiments, if a0 = a1 = 0.5 * a2 and x = y = z + 180°, then a0 cos x + a1 cos y + a2 cos z = 0, and the noise component of the output signal Sout is zero. That is, other embodiments of the present disclosure can use more sets of antennas to achieve the effect of suppressing noise.

[0029] For simplicity of explanation, the following embodiments of the present disclosure are described in terms of two sets of antennas, the first antenna 110 and the second antenna 120, for receiving and combining to generate the output signal Sout. However, the present disclosure can be applied to scenarios with two or more sets of antennas.

[0030] The first amplitude control circuit 260 is configured to adjust the amplitude of the signal output by the first antenna 210. The first phase control circuit 270 is configured to adjust the phase of the signal output by the first antenna 210. In some embodiments, the first amplitude control circuit 260 can be implemented by an amplifier. In other embodiments, the first phase control circuit 270 can be implemented by a phase shifter (e.g., an inductor-capacitor circuit). When the first antenna 210 generates the first noise to be processed TN1 caused by the interference source 250, at least one of the first amplitude control circuit 260 and the first phase control circuit 270 is configured to convert the first noise to be processed TN1 into the first noise N1. By designing (adjusting) an appropriate gain value for the first amplitude control circuit 260 and / or designing (adjusting) appropriate capacitance and inductance values for the first phase control circuit 270, the first noise N1 and the second noise N2 can have the target phase difference and the target amplitude ratio described above.

[0031] In other words, based on the aforementioned fixed positional relationship, the length of the first signal path L1, the length of the second signal path L2, and the circuit configuration of at least one of the first amplitude control circuit 260 and the first phase control circuit 270, the first noise N1 and the second noise N2 have a target phase difference and a target amplitude ratio, thus forming destructive interference in the power combiner 230. Furthermore, when the first antenna 210 generates a first primary signal TM1 to be processed caused by an external signal source ES, at least one of the first amplitude control circuit 260 and the first phase control circuit 270 is used to convert the first primary signal TM1 to be processed into a first primary signal M1, so that the first primary signal M1 and the second primary signal M2 form constructive interference in the power combiner 230.

[0032] To further enhance design flexibility, in some embodiments, the wireless communication device 200 includes, in addition to, Figure 2A At least one of the first amplitude control circuit 260 and the first phase control circuit 270 shown may further include at least one of the second amplitude control circuit and the second phase control circuit. Please refer to both. Figure 2A , Figure 2B This is a simplified functional block diagram of a wireless communication device according to another embodiment of this disclosure. Figure 2B As shown, at least one of the second amplitude control circuit 262 and the second phase control circuit 272 is disposed in the second signal path L2 and coupled between the second antenna 220 and the power combiner 230. In an embodiment where the wireless communication device 200 includes both the second amplitude control circuit 262 and the second phase control circuit 272, the second amplitude control circuit 262 and the second phase control circuit 272 are connected in series and coupled between the second antenna 220 and the power combiner 230. The structure and function of the second amplitude control circuit 262 and the second phase control circuit 272 are similar to those of the first amplitude control circuit 260 and the first phase control circuit 270, respectively. When the second antenna 220 generates a second noise TN2 to be processed caused by the interference source 250, at least one of the second amplitude control circuit 262 and the second phase control circuit 272 is used to convert the second noise TN2 to be processed into a second noise N2, so that the first noise N1 and the second noise N2 form destructive interference in the power combiner 230.

[0033] Therefore, as Figure 2BAs shown, based on the aforementioned fixed positional relationship, the length of the first signal path L1, the length of the second signal path L2, the circuit configuration of at least one of the first amplitude control circuit 260 and the first phase control circuit 270, and the circuit configuration of at least one of the second amplitude control circuit 262 and the second phase control circuit 272, the first noise N1 and the second noise N2 have a target phase difference and a target amplitude ratio. Furthermore, when the second antenna 220 generates a second primary signal to be processed caused by an external signal source ES, at least one of the second amplitude control circuit 262 and the second phase control circuit 272 is used to convert the second primary signal to be processed TM2 into a second primary signal M2, so that the first primary signal M1 and the second primary signal M2 form constructive interference at the power combiner 230.

[0034] Figure 2B This is a simplified functional block diagram of a wireless communication device 300 according to an embodiment of this disclosure. The first antenna 310, the second antenna 320, the power combiner 330, the first signal path L1, the second signal path L2, the first amplitude control circuit 360, and the first phase control circuit 370 of the wireless communication device 300 are respectively similar to... Figure 3 The corresponding functional blocks or elements in the wireless communication device 200 will not be described again here for the sake of simplicity. Additionally, similar to... Figure 2A The wireless communication device 300 includes at least one of a first amplitude control circuit 360 and a first phase control circuit 370.

[0035] The digital communication interface 380 of the wireless communication device 300 has a function similar to that of Figure 2A The interference source 250, but the digital communication interface 380 may not interfere with the first antenna 310 and the second antenna 320. Figure 2A In this embodiment, the noise to be processed TN1 (or the first noise N1) and the second noise N2 are mainly caused by the interference source 350, which is located outside the wireless communication device 300. The computing circuit 340 of the wireless communication device 300 is used to analyze the interference source 350 to adaptively adjust the circuit configuration (e.g., the aforementioned gain, capacitance value, and / or inductance value) of at least one of the first amplitude control circuit 360 and the first phase control circuit 370, so that the first noise N1 and the second noise N2 can form destructive interference in the power combiner 330. It is worth mentioning that the interference source 350 has a fixed position, so the first antenna 310, the second antenna 320, and the interference source 350 still have a fixed positional relationship. For example, the first antenna 310 is separated from the interference source 350 by a first distance D1', and the second antenna 320 is separated from the interference source 350 by a second distance D2', wherein the first distance D1' and the second distance D2' are fixed values.

[0036] In detail, the operation circuit 340 can first determine whether the interference source 350 is a known interference source. For example, the operation circuit 340 can first reset the circuit configuration of the at least one of the first amplitude control circuit 360 and the first phase control circuit 370, and then analyze the frequency, amplitude, and / or header of the packets of the first noise N1 and the second noise N2 to determine whether the characteristics of the interference source 350 match any of the interference sources recorded in the operation circuit 340.

[0037] When the operation circuit 340 determines that the interference source 350 is a known interference source, the operation circuit 340 is configured to adjust the circuit configuration of the at least one of the first amplitude control circuit 360 and the first phase control circuit 370 to a preset configuration (e.g., gain, capacitance value, and / or inductance value recorded in the operation circuit 340 in advance in a lookup table) corresponding to the interference source 350. In this way, based on the preset configuration and the fixed positional relationship, the first noise N1 and the second noise N2 have a target phase difference and a target amplitude ratio, so as to form destructive interference at the power combiner 330.

[0038] On the other hand, when the operation circuit 340 determines that the interference source 350 is an unknown interference source, the operation circuit 340 is configured to adjust the circuit configuration of the at least one of the first amplitude control circuit 360 and the first phase control circuit 370 until the first noise N1 and the second noise N2 have a target phase difference and a target amplitude ratio based on the fixed positional relationship and the adjusted circuit configuration. For example, the operation circuit 340 can sequentially increase or decrease the gain, capacitance value, and / or inductance value of the at least one of the first amplitude control circuit 360 and the first phase control circuit 370.

[0039] In addition, as mentioned above, the length of the first signal path L1 and the length of the second signal path L2 can affect the amplitude and phase of the first noise N1 and the second noise N2. Therefore, in some embodiments, in the case that the interference source 350 is a known interference source, the first noise N1 and the second noise N2 received by the power combiner 330 have a target phase difference and a target amplitude ratio based on the fixed positional relationship, the preset configuration, the length of the first signal path L1, and the length of the second signal path L2. In other embodiments, in the case that the interference source 350 is an unknown interference source, the first noise N1 and the second noise N2 received by the power combiner 330 have a target phase difference and a target amplitude ratio based on the fixed positional relationship, the adjusted circuit configuration, the length of the first signal path L1, and the length of the second signal path L2.

[0040] Figure 3This is a simplified flowchart of an operation method 400 according to an embodiment of this disclosure. Any combination of features of the operation method 400 can be implemented as a plurality of instructions stored in a non-transitory computer-readable storage medium. When these instructions are executed by one or more processors (e.g., arithmetic circuits 140, 240, and 340), these instructions will cause the one or more processors to perform part or all of the operation method 400. The operation method 400 is applicable to the wireless communication devices 100, 200, and 300 of Figures 1 to 3, and will be described first using wireless communication device 100 as an example.

[0041] In step S410, the power combiner 130 receives first noise N1 and second noise N2 caused by the interference source 150 from the first signal path L1 and the second signal path L2, respectively. Based on the fixed positional relationship between the first antenna 110, the second antenna 120, and the interference source 150, the first noise N1 and second noise N2 received by the power combiner 130 have a target phase difference and a target amplitude ratio. In some embodiments, the target phase difference is between -160 and -180 degrees, or between 160 and 180 degrees. In some embodiments, the target amplitude ratio is between 1:0.8 and 1:1.2.

[0042] In step S420, the power combiner 130 combines the first noise N1 and the second noise N2 so that the first noise N1 and the second noise N2 form a destructive interference in the power combiner 130.

[0043] In some embodiments, Figure 4 When the wireless communication device 200 executes the operation method 400, and the wireless communication device 200 includes at least one of the first amplitude control circuit 260 and the first phase control circuit 270, step S410 includes: when the first antenna 210 generates a first noise to be processed TN1 caused by the interference source 250, converting the first noise to be processed TN1 into a first noise N1 through the at least one of the first amplitude control circuit 260 and the first phase control circuit 270.

[0044] In other embodiments, such as Figure 2AThe wireless communication device 200 shown further includes at least one of a second amplitude control circuit 262 and a second phase control circuit 272, which can be coupled between the second antenna 220 and the power combiner 230, and are similar to the first amplitude control circuit 260 and the first phase control circuit 270, respectively. Step S410 further includes converting the second noise to be processed TN2 caused by the interference source 250 into a second noise N2 through the at least one of the second amplitude control circuit 262 and the second phase control circuit 272.

[0045] Further, with reference to Figure 2B and Figure 2A , the operation method 400 can further include receiving, through the power combiner 230, a first main signal Ml and a second main signal M2 caused by an external signal source ES from the first signal path Ll and the second signal path L2, respectively. The first main signal Ml and the second main signal M2 are combined through the power combiner 230 to form constructive interference at the power combiner 230.

[0046] In some embodiments, in the case that the wireless communication device 300 of Figure 2B Figure 3 performs the operation method 400, step S410 includes: (1) in response to the operation circuit 340 determining that the interference source 350 is a known interference source, adjusting, through the operation circuit 340, the circuit configuration of the at least one of the first amplitude control circuit 360 and the first phase control circuit 370 to a preset configuration corresponding to the known interference source, so that the first noise Nl and the second noise N2 have a target phase difference and a target amplitude ratio based on the fixed positional relationship of the first antenna 310, the second antenna 320, and the interference source 350 and the preset configuration; and (2) in response to the operation circuit 340 determining that the interference source 350 is an unknown interference source, adjusting, through the operation circuit 340, the circuit configuration of the at least one of the first amplitude control circuit 360 and the first phase control circuit 370 until the first noise Nl and the second noise N2 have the target phase difference and the target amplitude ratio based on the fixed positional relationship and the adjusted circuit configuration. In an embodiment, the interference source 350 can be a digital transmission interface of the wireless communication device.

[0047] The above description is merely that of the preferred embodiments of the present disclosure, and various modifications and equivalent changes can be made thereto without departing from the scope or spirit of the present disclosure. Therefore, the scope of the present disclosure shall be defined by the following claims.

[0048] SYMBOL DESCRIPTION

[0049] 100, 200, 300: wireless communication device

[0050] 110, 210, 310: first antenna

[0051] 120, 220, 320: second antenna

[0052] 130, 230, 330: power combiner

[0053] 140, 240, 340: arithmetic circuit

[0054] 150, 250, 350: interference source

[0055] 260, 360: first amplitude control circuit

[0056] 270, 370: first phase control circuit

[0057] 380: digital communication interface

[0058] 400: operation method

[0059] S410, S420: step

[0060] D1, D1’: first distance

[0061] D2, D2’: second distance

[0062] ES: external signal source

[0063] L1: first signal path

[0064] L2: second signal path

[0065] M1: first main signal

[0066] M2: second main signal

[0067] N1: first noise

[0068] N2: second noise

[0069] SB: substrate

[0070] Sout: output signal

[0071] TM1: first to-be-processed main signal

[0072] TN1: first to-be-processed noise

[0073] TM2: second to-be-processed main signal

[0074] TN2: second to-be-processed noise

Claims

1. A wireless communication device comprising: a first antenna; a second antenna, wherein the first antenna, the second antenna, and an interference source have a fixed positional relationship; and a power combiner coupled to the first antenna and the second antenna via a first signal path and a second signal path, respectively, for receiving a first noise and a second noise caused by the interference source via the first signal path and the second signal path, respectively, and for combining the first noise and the second noise, wherein based on the fixed positional relationship, the first noise and the second noise received by the power combiner have a target phase difference and a target amplitude ratio, such that the first noise and the second noise form a destructive interference at the power combiner. 2.The wireless communication device of claim 1, wherein the target phase difference is between -160 to -180 degrees or between 160 to 180 degrees, or the target amplitude ratio is between 1:0.8-1:1.

2. 3.The wireless communication device of claim 1, wherein based on the fixed positional relationship, a length of the first signal path, and a length of the second signal path, the first noise and the second noise received by the power combiner have the target phase difference and the target amplitude ratio. 4.The wireless communication device of claim 1, further comprising at least one of a first amplitude control circuit and a first phase control circuit, wherein the at least one of the first amplitude control circuit and the first phase control circuit is disposed in the first signal path and coupled between the first antenna and the power combiner, wherein when the first antenna generates a first to-be-processed noise caused by the interference source, the at least one of the first amplitude control circuit and the first phase control circuit is used to convert the first to-be-processed noise into the first noise. 5.The wireless communication device of claim 4, further comprising at least one of a second amplitude control circuit and a second phase control circuit, wherein the at least one of the second amplitude control circuit and the second phase control circuit is disposed in the second signal path and coupled between the second antenna and the power combiner, wherein when the second antenna generates a second to-be-processed noise caused by the interference source, the at least one of the second amplitude control circuit and the second phase control circuit is used to convert the second to-be-processed noise into the second noise. 6.The wireless communication device of claim 4, wherein the interference source is located outside the wireless communication device, the wireless communication device further comprising a calculation circuit configured to: in response to determining that the interference source is a known interference source, adjust a circuit configuration of the at least one of the first amplitude control circuit and the first phase control circuit to a preset configuration corresponding to the known interference source, such that the first noise and the second noise have the target phase difference and the target amplitude ratio based on the fixed positional relationship and the preset configuration; and in response to determining that the interference source is an unknown interference source, adjust the circuit configuration of the at least one of the first amplitude control circuit and the first phase control circuit to a default configuration corresponding to the unknown interference source, such that the first noise and the second noise have the target phase difference and the target amplitude ratio based on the fixed positional relationship and the default configuration. in response to determining that the interference source is an unknown interference source, adjusting the circuit configuration of the at least one of the first amplitude control circuit and the first phase control circuit until the first noise and the second noise have the target phase difference and the target amplitude ratio based on the fixed position relationship and the adjusted circuit configuration.

7. The wireless communication device of claim 6, wherein when the interference source is the known interference source, the first noise and the second noise received by the power combiner have the target phase difference and the target amplitude ratio based on the fixed position relationship, the preset configuration, a length of the first signal path, and a length of the second signal path, wherein when the interference source is the unknown interference source, the first noise and the second noise received by the power combiner have the target phase difference and the target amplitude ratio based on the fixed position relationship, the adjusted circuit configuration, the length of the first signal path, and the length of the second signal path.

8. The wireless communication device of any one of claims 1-7, wherein the interference source is a digital transmission interface of the wireless communication device.

9. The wireless communication device of any one of claims 1-7, wherein the power combiner is configured to receive a first primary signal and a second primary signal caused by an external signal source through the first signal path and the second signal path, respectively, and combine the first primary signal and the second primary signal such that the first primary signal and the second primary signal form a constructive interference at the power combiner.

10. An operation method for a wireless communication device, wherein the wireless communication device comprises a first antenna, a second antenna, and a power combiner, wherein the first antenna, the second antenna, and an interference source have a fixed position relationship, the power combiner is coupled to the first antenna and the second antenna through a first signal path and a second signal path, respectively, the operation method comprising: receiving, by the power combiner, a first noise and a second noise caused by the interference source from the first signal path and the second signal path, respectively; and combining, by the power combiner, the first noise and the second noise, wherein the first noise and the second noise received by the power combiner have a target phase difference and a target amplitude ratio based on the fixed position relationship such that the first noise and the second noise form a destructive interference at the power combiner.

Images