TW201714480A - Wireless tranceiving device - Google Patents

Abstract

A wireless transceiving device is proposed. The wireless transceiving device includes a transmitting circuit, a receiving circuit and an auxiliary receiving circuit. The transmitting circuit includes a signal transceiving circuit. The receiving circuit includes the signal transceiving circuit. The auxiliary receiving circuit couples to the receiving circuit and includes an auxiliary antenna. When the receiving circuit receives a signal via the signal transceiving circuit, the auxiliary receiving circuit assists the receiving circuit to receive the signal via the auxiliary antenna.

Description

Wireless transceiver

The present invention relates to a wireless transceiver.

In current wireless (Wi-Fi) product designs, access points (APs) generally have superior radio frequency (RF) transmit power and receive sensitivity. However, since consumer devices (eg, cell phones, tablets, notebooks, etc.) require low power designs to increase battery life, most of these devices are designed for weak RF transmit power. In addition, in order to avoid damage to the human body caused by electromagnetic waves of these devices, these devices also need to meet specific absorption rate (SAR) limits, and thus cannot transmit strong RF power.

That is to say, under normal usage conditions, although the client device receives Wi-Fi signals from the AP, the weak RF transmission power design of these devices may make the transmitted signals unable to be smoothly transmitted to the AP. Therefore, the client device may not be able to use the network smoothly due to unstable connection with the AP. Also, this situation will be more severe in a multi-path and multi-barrier environment.

In order to improve this problem, the current method used by various manufacturers is to use more antennas and higher-specific multi-input multi-output (MIMO) systems in the AP. However, the cost of this approach is higher cost and more complex circuit design. Therefore, the price of similar high-end products often makes the average consumer unable to load.

Please refer to FIG. 1, which is the most common AP architecture diagram in the prior art. In FIG. 1, the AP 100 includes an RF circuit, also referred to as a radio frequency circuit 110 (for example, an RF integrated circuit (RFIC), but is not limited thereto), and n sets (n is a positive integer) of the transceiving combinations TR1 to TRn. In the architecture of Figure 1, when the RF signal is received from the antenna, it can be based on the ratio of the RF signal power to the noise power (such as the thermal noise power of the printed circuit board and assemble (PCBA)). To get the signal to noise ratio (SNR), to determine the current minimum detectable signal (MDS).

In order to improve the receiving capability of the AP, the architecture of FIG. 2 is also proposed in the prior art in order to achieve a better SNR. Please refer to FIG. 2, which is an AP architecture including a diversity path in the prior art. Compared with FIG. 1, the AP 200 of FIG. 2 can be seen as adding a multi-set path 210 to the AP 100. If the architecture in Figure 2 is to be implemented, it is generally necessary for the IC chip supplier to join the multi-set path 210 and design the corresponding control software when making the IC. Although the AP 200 has a path for receiving signals, since the operation is only to replace one of the receivers with poor reception performance in the combination TR1~TRn by the multi-set path 210, the reception performance of the AP 200 is compared with that of the AP 100. Substantially no substantial improvement has been made. Therefore, the practice of adding multiple sets of paths in the AP has gradually disappeared from the market.

In addition, the use of a high-gain antenna in each of the transceiver combinations TR1 to TRn is also a common way to increase the reception capability of the AP 100. High-gain antennas generally have higher gains only in certain directions and are more commonly used in base stations. However, since the transmitter and receiver in each transceiver combination TR1~TRn share an antenna, and the antenna of the transmitter is subject to relevant regulations (such as the Federal Communications Commission (FCC) certification and the European Union (CE) certification. Therefore, APs that are generally built indoors are not suitable for use with high-gain antennas with directivity. Moreover, the average gain or efficiency of a directional high gain antenna is only about 80%. Therefore, as a whole, the use of a high-gain antenna in each of the transceiver combinations TR1 to TRn cannot effectively improve the receiving capability of the AP 100.

In addition, the antenna gain can be improved by implementing beamforming techniques on the antenna to generate beamforming gain. Beamforming techniques are generally classified into transmit beamforming and receiver beamforming, each of which has directivity. However, since the AP cannot have directivity at the time of reception, the AP can only use transmit beamforming and cannot use receive beamforming. Moreover, beamforming technology also requires IC chip suppliers to assist in the design of algorithms. In addition, the premise of implementing the beamforming technique is that the RF signal must be received first, that is, when the RF signal cannot be successfully received due to the distance and the like, the beamforming technology cannot be implemented. In this case, the MDS restrictions will still exist.

Most IC chip suppliers use maximum ratio combining (MRC) to improve reception performance on APs implementing MIMO architecture, but the maximum gain achievable by the MRC mechanism is limited by the number of receive paths. For example, the maximum gain achievable with the three receive paths is three times, which is 4.7 dB. Moreover, in addition to the support of IC chip suppliers, these technologies are also costly to manufacture.

Therefore, how to break the MDS limit without increasing the excessive cost to improve the AP receiving performance, so that the user terminal device can extend the battery life with lower RF transmission power has become an important subject in the field.

In view of this, the present invention proposes a wireless transceiver configured with an auxiliary receiving circuit that can improve the receiving performance of the wireless transceiver by breaking the MDS limit without increasing the excessive cost.

The invention provides a wireless transceiver device comprising a transmitting circuit, a receiving circuit and at least one auxiliary receiving circuit. The transmission circuit includes a signal transceiving circuit. The receiving circuit includes a signal transmitting and receiving circuit. At least one auxiliary receiving circuit is coupled to the receiving circuit and individually includes an auxiliary antenna. When the receiving circuit receives the signal through the signal transmitting and receiving circuit, each auxiliary receiving circuit receives the signal through the auxiliary antenna auxiliary receiving circuit.

In an embodiment of the invention, the signal transceiver circuit includes a first antenna and a second antenna. The transmitting circuit transmits the first signal through the first antenna, and the receiving circuit receives the second signal through the second antenna. When the receiving circuit receives the second signal through the second antenna, each auxiliary receiving circuit receives the second signal through the auxiliary antenna auxiliary receiving circuit.

In an embodiment of the invention, the signal transceiver circuit includes a radio frequency switch and an antenna. The receiving circuit and the transmitting circuit share a radio frequency switch and an antenna. The radio frequency switch is switched to enable the transmitting circuit to transmit the first signal through the antenna, or switch to make the receiving circuit pass through. The antenna receives the second signal. When the RF switch is switched so that the receiving circuit receives the second signal through the antenna, each of the auxiliary receiving circuits receives the second signal through the auxiliary antenna auxiliary receiving circuit.

In an embodiment of the invention, the wireless transceiver further includes a radio frequency circuit coupled to the transmitting circuit and the receiving circuit. The first end of the RF switch is coupled to the antenna, and the second end of the RF switch is coupled to the transmitting node of the RF circuit. The receiving circuit further includes a first low noise amplifier and a signal adding circuit. The input end of the first low noise amplifier is coupled to the third end of the RF switch. The signal addition circuit is coupled between the RF circuit and the output of the first low noise amplifier.

In an embodiment of the invention, each of the auxiliary receiving circuits further includes a second low noise amplifier. The input end of the second low noise amplifier is coupled to the auxiliary antenna, and the output end of the second low noise amplifier is coupled to the signal addition circuit. The second low noise amplifier is used to electrically isolate the auxiliary antenna from the other auxiliary antennas.

In an embodiment of the invention, the receiving circuit further includes a filter coupled between the output of the first low noise amplifier and the receiving node of the radio frequency circuit.

In an embodiment of the invention, the auxiliary antennas of the auxiliary receiving circuits are directional antennas, and the auxiliary antennas of the auxiliary receiving circuits are directed in different directions.

In an embodiment of the invention, the antenna has an antenna pattern, and the auxiliary antenna pattern of the auxiliary antenna of each auxiliary receiving circuit and the antenna pattern synthesize an omnidirectional antenna pattern.

Based on the above, the wireless transceiver device proposed by the embodiment of the present invention can receive the signal from the client device in the receiving mode through the additionally configured auxiliary receiving circuit.

The above described features and advantages of the invention will be apparent from the following description.

FIG. 3A is a schematic diagram of a wireless transceiver according to an embodiment of the invention. In this embodiment, the wireless transceiver 300 can be an AP, a router, a switch, or other similar network device. In addition, in other embodiments, the wireless transceiver 300 may also be based on Global System for Mobile (GSM), 3rd Generation Partnership Project Long Term Evolution (3GPP LTE), Code Division Multiple Access (Code Division Multiple) Base stations operating in communication standards such as Access, CDMA, WCDMA, High Speed Packet Access (HSPA), and World Interoperability for Microwave Access (WiMAX), for example A femtocell base station, a pico-cell base station, or a remote radio head (RRH), etc., but embodiments of the present invention are not limited thereto. For convenience of explanation, it will be assumed hereinafter that the radio transceiver 300 is an AP operating under IEEE 802.11, and those skilled in the art should be able to derive an implementation of the radio transceiver 300 operating under other communication technology standards in accordance with the following teachings.

The wireless transceiver 300 includes a transmitting circuit 310, a receiving circuit 320, an auxiliary receiving circuit 330, and an RF circuit 340. Both the transmitting circuit 310 and the receiving circuit 320 include a signal transmitting and receiving circuit TR. In other embodiments, the transmitting circuit 310, the receiving circuit 320, and the auxiliary receiving circuit 330 may also optionally include various types of filters and components such as a power amplifier (PA), as shown in FIG. 3A.

In order to improve the receiving performance of the radio transceiver 300, the present invention further configures the auxiliary receiving circuit 330 coupled to the receiving circuit 320 in the radio transceiver 300. In an embodiment, when the receiving circuit 320 receives the signal through the signal transceiving circuit TR, the auxiliary receiving circuit 330 can assist the receiving circuit 320 to receive the signal through the included auxiliary antenna 332. A detailed description will be provided below.

FIG. 3B is a schematic diagram of a wireless transceiver according to FIG. 3A. In the present embodiment, the signal transceiving circuit TR includes an RF switch 312 and an antenna 314. The receiving circuit 320 also includes an RF switch 312 and an antenna 314, that is, the receiving circuit 320 shares the RF switch 312 and the antenna 314 with the transmitting circuit 310. In this embodiment, the first end of the RF switch 312 is coupled to the antenna 314, the second end of the RF switch 312 is coupled to the transmitting node T1 of the RF circuit 340, and the third end of the RF switch 312 is coupled to the low noise amplifier. (low noise amplifier, LNA) 322. The input of the low noise amplifier 322 can be coupled to the third end of the RF switch 312, and the output of the low noise amplifier 322 can be coupled to the signal adder circuit 324. The signal addition circuit 324 is recoupled to the receiving node R1 of the RF circuit 340. Since the radio transceiver 300 includes one transmission circuit and two reception circuits, it can be simply referred to as a 1T2R architecture.

In an embodiment, when the radio 300 is in the transmit mode, the RF switch 312 can be switched to cause the transmit circuit 310 to transmit the first signal S1 through the antenna 314. The first signal S1 is, for example, a wireless signal that the wireless transceiver 300 wants to transmit to the client device, such as a Wi-Fi signal, etc., but embodiments of the present invention are not limited thereto. On the other hand, when the radio transceiver 300 is in the receive mode, the RF switch 312 can be switched to cause the receive circuit 320 to receive the second signal S2 through the antenna 314. The second signal S2 is, for example, a signal from a client device. As mentioned previously, in order to extend the endurance of the client device and to meet the SAR limits, the client device is unable to use the stronger RF power, for example using only 5 dBm of transmit power to transmit the second signal S2. When the antenna 314 receives the second signal S2 through an obstacle (such as a wall) or a bad wireless channel, the received power of the second signal S2 is mostly low, for example, -85 dBm.

Therefore, the present invention further configures the auxiliary receiving circuit 330 coupled to the receiving circuit 320 in the wireless transceiver device 300 to improve the receiving performance of the wireless transceiver device 300. In an embodiment, when the output of the low noise amplifier 322 is coupled to the receiving node R1 of the RF circuit 340 through the signal adding circuit 324, the auxiliary receiving circuit 330 can also be coupled to the RF circuit through the signal adding circuit 324. Receive node R1 of 340. In another embodiment, when the low noise amplifier 322 is coupled to the receiving node R1 of the RF circuit 340 by the signal adding circuit 324 and a filter (for example, the filter 326), the auxiliary receiving circuit 330 can also be similarly The signal addition circuit 324 and the filter 326 are coupled to the RF circuit 340 as shown in FIG. 3B. In one embodiment, filter 326 can be implemented as a matched filter or other type of filter as desired by the designer.

In the present embodiment, the auxiliary receiving circuit 330 includes an auxiliary antenna 332 that can receive the second signal S2 when the RF switch 312 switches so that the receiving circuit 320 receives the second signal S2 through the antenna 314. In this case, since the receiving node R1 of the RF circuit 340 simultaneously receives the second signal S2 from the antenna 314 and the auxiliary antenna 332 and superimposes it through the signal adding circuit 324, the SNR obtained by the receiving node R1 is improved. In other words, even if the UE device transmits the second signal S2 with a transmission power of, for example, 5 dBm, the radio transceiver 300 configured with the auxiliary receiving circuit 330 can obtain a higher signal receiving power (for example, 2 times -85 dBm). , thereby improving throughput. From another point of view, the UE device can use weaker RF power when transmitting the second signal S2, for example, using only half of 5 dBm to achieve the original throughput, that is, the radio transceiver 300 is not configured with the auxiliary receiving circuit. 330 hours of throughput. In this case, the battery life of the client device will be further improved.

For example, in an embodiment of the invention, it is assumed that the measured SNR of the antenna 314 when receiving data is a value, and is measured after adding a set of auxiliary antennas 332 (which may have the same specifications as the antenna 314). The SNR will be close to twice this value. It can be seen that the MDS limitation has been broken indirectly, so that the receiving capability of the radio transceiver 300 can be improved. In other embodiments, a higher SNR value can also be obtained by adding a complex array of auxiliary antennas 332.

In another embodiment, if the isolation between the antenna 314 and the auxiliary antenna 332 can be improved (ie, the correlation between the two is improved), the wireless transceiver can be analyzed and evaluated more efficiently and conveniently. 300 reception performance. Therefore, the auxiliary receiving circuit 330 may further include a low noise amplifier 334 for electrically isolating the auxiliary antenna 332 from the antenna 314. As shown in FIG. 3B, the input of the low noise amplifier 334 can be coupled to the auxiliary antenna 332, and the output of the low noise amplifier 334 can be coupled to the receiving node R1 of the RF circuit 340 via the signal adding circuit 324. In the embodiment where the low noise amplifier 322 of the receiving circuit 320 is coupled to the receiving node R1 through the signal adding circuit 324 and the filter 326, the low noise amplifier 334 of the auxiliary receiving circuit 330 can also pass through the signal adding circuit 324. The filter 326 is coupled to the receiving node R1, but the embodiments of the present invention are not limited thereto.

However, in some cases, the low noise amplifier 334 may not be able to be turned off in due course. For example, when the power of the first signal S1 transmitted by the antenna 314 is high, the auxiliary antenna 332 may also receive the high-power first signal S1, so that the low noise amplifier 334 cannot be smoothly turned off. Therefore, in other embodiments, the RF switch can be selectively configured between the auxiliary antenna 332 and the low noise amplifier 334 to properly turn off the low noise amplifier 334 when the low noise amplifier 334 is difficult to be turned off.

In order to enable the radio transceiver 300 to receive signals from the client device omnidirectionally, the auxiliary antenna pattern of the auxiliary antenna 332 can be designed to be combined with the antenna field pattern of the antenna 314 into an omnidirectional antenna field type. kind. For example, the auxiliary antenna 332 can be implemented by using a high-gain antenna, and the auxiliary antenna pattern is designed to be the above-described aspect by a specific horizontal or vertical polarization, but the embodiment of the present invention is not limited thereto.

Please refer to FIG. 3C , which is a schematic diagram of a wireless transceiver according to the embodiment of FIG. 3A . In this embodiment, the signal transmitting and receiving circuit TR may include a first antenna A1 and a second antenna A2 respectively configured to the pre-transmission circuit 310 and the receiving circuit 320. The transmitting circuit 310 can transmit the first signal S1 through the first antenna A1, and the receiving circuit 320 can receive the second signal S2 through the second antenna A2. Similar to the mechanism introduced in the previous embodiment, when the receiving circuit 320 receives the second signal S2 through the second antenna A2, the auxiliary receiving circuit 330 can assist the receiving circuit 320 to receive the second signal S2 through the auxiliary antenna 332, and its specific operation For the manner and detailed description, reference may be made to the description in the previous embodiment, and details are not described herein again.

Please refer to FIG. 4 , which is a schematic diagram of a synthetic omnidirectional antenna field according to an embodiment of the invention. In the present embodiment, by appropriately designing the auxiliary antenna pattern 420 of the auxiliary antenna 332, it can be combined with the antenna pattern 410 of the antenna 314 into an omnidirectional antenna pattern 430. In this way, the wireless transceiver 300 can receive signals from the client device omnidirectionally, thereby improving the receiving performance of the wireless transceiver 300.

In other embodiments, the radio can also be designed to include multiple sets of auxiliary receiving circuits, as shown in FIG. Please refer to FIG. 5 , which is a schematic diagram of a wireless transceiver according to the embodiment of FIG. 3B . In the present embodiment, the wireless transceiver 500 may include a transmitting circuit 310, a receiving circuit 320, auxiliary receiving circuits 530_1~530_N (N is a positive integer), and an RF circuit 340. As previously mentioned, in order to electrically isolate the auxiliary antennas 532_1 ～ 532_N of the auxiliary receiving circuits 530_1 530 530_N, the auxiliary receiving circuits 530_1 530 530_N may configure the low noise amplifiers 534_1 534 534_N. Moreover, in order to enable the radio transceiver 500 to receive signals from the UE device omnidirectionally, each of the auxiliary antennas 532_1 ～ 532_N can be realized as a directional antenna pointing in different directions. Further, the auxiliary antenna field type of each of the auxiliary antennas 532_1 to 532_N can be designed to be combined with the antenna field type of the antenna 314 into an omnidirectional antenna field type.

In other embodiments, the wireless transceiver can also be designed to include multiple sets of transmit circuits, receive circuits, and auxiliary receive circuits, as shown in FIGS. 6 and 7. Please refer to FIG. 6 , which is a schematic diagram of a wireless transceiver according to the embodiment of FIG. 3B . In this embodiment, the radio transceiver 600 includes all the components of FIG. 3B, and further includes a transmitting circuit 310' and a receiving circuit 320'. The circuit structure and operation mode can be referred to the relevant embodiments in FIG. 1 and FIG. Description, no longer repeat here. Since the wireless transceiver 600 includes two transmission circuits and three receiving circuits, it can be simply referred to as a 2T3R architecture.

Please refer to FIG. 7. FIG. 7 is a schematic diagram of the wireless transceiver according to the embodiment of FIG. 6. In this embodiment, the wireless transceiver device 700 includes all the components of FIG. 6 , and further includes an auxiliary receiving circuit 330 ′ coupled to the receiving circuit 320 ′. The circuit structure and operation mode thereof can refer to the assistance in the previous embodiment. The description of the receiving circuit 330 will not be repeated here. Since the wireless transceiver 700 includes two transmission circuits and four receiving circuits, it can be simply referred to as a 2T4R architecture.

In other embodiments, the architecture of FIG. 3C may be adjusted to the manner shown in FIG. 5 to FIG. 7 according to the needs of the designer, but is not limited thereto.

Please refer to FIG. 8. FIG. 8 is a plan view of a demonstration site according to an embodiment of the present invention. In this embodiment, four different radios will be placed at location 800 in Figure 8, respectively, for evaluating the reception performance for the client devices located at locations L1 - L5. The above four kinds of APs are, for example, AP 100 of FIG. 1 (when n is 2), radio transceiver 700 (2T4R) of FIG. 7, AP (2T2R) of vendor A, and AP (2T2R) of vendor B.

Please refer to FIG. 9 , which is a schematic diagram of receiving performance according to FIG. 8 . It can be seen from FIG. 9 that the receiving performance of the wireless transceiver 700 proposed by the embodiment of the present invention is quite good at each location, especially at the location L3 (the corner of the upper floor) and the receiving performance at the L4 (directly above) (ie, , throughput) is significantly better than the other three wireless transceivers.

In summary, the wireless transceiver device of the embodiment of the present invention can receive the signal from the user equipment in the receiving mode through the additionally configured auxiliary receiving circuit. In this case, since the wireless transceiver can obtain a higher SNR in the receiving mode, the limitation of the MDS can be broken correspondingly, and the effect of improving the receiving performance can be achieved. In this way, the wireless transceiver device of the embodiment of the present invention can increase the throughput and/or improve the battery life of the client device without increasing the excessive cost.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100, 200‧‧‧AP
110, 340‧‧‧ RF circuits
210‧‧‧Multiple path
300, 500, 600, 700‧‧‧ wireless transceivers
310, 310'‧‧‧ transmit circuit
312‧‧‧RF switch
314‧‧‧Antenna
320, 320'‧‧‧ receiving circuit
322, 334, 534_1~534_N‧‧‧Low noise amplifier
324‧‧‧ Signal Addition Circuit
326‧‧‧ filter
330, 330', 530_1~530_N‧‧‧Auxiliary receiving circuit
332, 532_1~532_N‧‧‧Auxiliary antenna
410‧‧‧Antenna field type
420‧‧‧Auxiliary antenna field type
430‧‧‧ Omnidirectional antenna field type
800, L1~L5‧‧‧Location
A1‧‧‧first antenna
A2‧‧‧second antenna
T1‧‧‧Transfer node
R1‧‧‧ receiving node
S1‧‧‧ first signal
S2‧‧‧ second signal
TR1~TRn‧‧‧transceiver combination
TR‧‧‧ signal transceiver circuit

Figure 1 is a diagram of the most common AP architecture in the prior art. 2 is an AP architecture including a diversity path in the prior art. FIG. 3A is a schematic diagram of a wireless transceiver according to an embodiment of the invention. FIG. 3B is a schematic diagram of a wireless transceiver according to FIG. 3A. FIG. 3C is a schematic diagram of a wireless transceiver according to FIG. 3A. 4 is a schematic diagram of a synthetic omnidirectional antenna field pattern according to an embodiment of the invention. FIG. 5 is a schematic diagram of a wireless receiving device according to the embodiment of FIG. 3B. FIG. 6 is a schematic diagram of a wireless receiving device according to the embodiment of FIG. 3B. FIG. 7 is a schematic diagram of a wireless receiving device according to the embodiment of FIG. 3B. Figure 8 is a plan view of a demonstration site in accordance with an embodiment of the present invention. FIG. 9 is a schematic diagram of receiving performance according to FIG. 6.

300‧‧‧Wireless transceiver

310‧‧‧Transmission circuit

320‧‧‧ receiving circuit

322, 334‧‧‧Low noise amplifier

324‧‧‧ Signal Addition Circuit

326‧‧‧ filter

330‧‧‧Auxiliary receiving circuit

332‧‧‧Auxiliary antenna

340‧‧‧RF circuit

T1‧‧‧Transfer node

R1‧‧‧ receiving node

S1‧‧‧ first signal

S2‧‧‧ second signal

TR‧‧‧ signal transceiver circuit

Claims (13)

A wireless transceiver device comprising: a transmitting circuit comprising a signal transmitting and receiving circuit; a receiving circuit comprising the signal transmitting and receiving circuit; and at least one auxiliary receiving circuit coupled to the receiving circuit and each comprising an auxiliary antenna, wherein When the receiving circuit receives a signal through the signal transmitting and receiving circuit, each of the auxiliary receiving circuits assists the receiving circuit to receive the signal through the auxiliary antenna. The wireless transceiver device of claim 1, wherein the signal transceiver circuit comprises a first antenna and a second antenna, and the transmitting circuit transmits a first signal through the first antenna, the receiving circuit And receiving, by the second antenna, a second signal, wherein when the receiving circuit receives the second signal through the second antenna, each of the auxiliary receiving circuits assists the receiving circuit to receive the second signal through the auxiliary antenna. The radio transceiver device of claim 1, wherein the signal transceiving circuit comprises an RF switch and an antenna, the receiving circuit sharing the RF switch and the antenna with the transmitting circuit, the RF switch is switched to enable the transmitting The circuit transmits a first signal through the antenna, or switches to enable the receiving circuit to receive a second signal through the antenna, wherein when the RF switch is switched to enable the receiving circuit to receive the second signal through the antenna, each of the The auxiliary receiving circuit assists the receiving circuit to receive the second signal through the auxiliary antenna. The radio transceiver of claim 3, further comprising a radio frequency circuit coupled to the transmitting circuit and the receiving circuit, wherein the first end of the radio frequency switch is coupled to the antenna, and the radio switch is The second end is coupled to a transmitting node of the RF circuit; the receiving circuit further includes: a first low noise amplifier, the input end of the first low noise amplifier is coupled to the third end of the RF switch; and a signal The adder circuit is coupled between the RF circuit and an output of the first low noise amplifier. The wireless transceiver device of claim 4, wherein each of the auxiliary receiving circuits further comprises: a second low noise amplifier, wherein an input end of the second low noise amplifier is coupled to the auxiliary antenna, and The output of the second low noise amplifier is coupled to the signal adding circuit, and the second low noise amplifier is configured to electrically isolate the auxiliary antenna from the antenna and each of the auxiliary antennas. The wireless transceiver device of claim 4, wherein the receiving circuit further comprises at least one filter. The radio transceiver of claim 4, wherein the auxiliary receiving circuit comprises at least one filter. The radio transceiver device of claim 1, wherein the auxiliary antenna of each of the auxiliary receiving circuits is a directional antenna, and the auxiliary antennas of the auxiliary receiving circuits point in different directions. The radio transceiver device of claim 1, wherein the antenna has an antenna field type, and an auxiliary antenna field type of the auxiliary antenna of each auxiliary receiving circuit and the antenna field form an omnidirectional antenna. Field type. The radio transceiver device of claim 2, further comprising a radio frequency circuit coupled to the transmitting circuit and the receiving circuit, wherein the receiving circuit further comprises: a first low noise amplifier, the first low The input end of the noise amplifier is coupled to the second antenna; and a signal adding circuit is coupled between the RF circuit and an output of the first low noise amplifier. The wireless transceiver device of claim 10, wherein each of the auxiliary receiving circuits further comprises: a second low noise amplifier, wherein an input end of the second low noise amplifier is coupled to the auxiliary antenna, and The output of the second low noise amplifier is coupled to the signal adding circuit, and the second low noise amplifier is configured to electrically isolate the auxiliary antenna from the antenna and each of the auxiliary antennas. The wireless transceiver device of claim 10, wherein the receiving circuit further comprises at least one filter. The radio transceiver device of claim 10, wherein the auxiliary receiving circuit further comprises at least one filter.