A multi-band radio frequency communication module

Abstract

The utility model relates to wireless communication technical field, concretely relates to a kind of multi-frequency band radio frequency communication module, including radio frequency transceiver, power amplifier module, filter array, channel quality detection module, zero ohm resistance reconfigurable matrix;The signal transceiver end of radio frequency transceiver and the signal transceiver end of power amplifier module are connected;The signal transceiver end of power amplifier module and the signal transceiver end of channel quality detection module are connected;The signal transceiver end of channel quality detection module and the signal transceiver end of filter array are connected;The signal transceiver end connection of filter array and the signal transceiver end connection of zero ohm resistance reconfigurable matrix;The utility model solves the technical problem existing in prior art, such as slow response speed, poor flexibility and the like for controlling radio frequency switch and filter switching.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, and more specifically, to a multi-band radio frequency communication module. Background Technology

[0002] With the development of 5G and communication technologies, radio frequency front-end modules operating in a single frequency band can no longer meet the needs of data transmission and communication in modern society. Radio frequency front-end modules need to support multiple operating frequency bands at the same time in order to adapt to the spectrum allocation requirements of different regions and different operators.

[0003] Commonly used multi-band RF front-end architectures primarily employ microcontrollers or digital baseband chips to control RF switches and filters via software. However, existing technologies suffer from the following problems: the response time of this software-based control method using digital baseband chips to switch and filter is typically in the millisecond range, significantly slower than hardware control. Furthermore, the filter network design of existing RF front-end modules is fixed once completed, making it impossible to flexibly adjust the filter topology according to actual application scenarios. This results in the same hardware platform being difficult to adapt to different spectrum requirements. Therefore, existing multi-band RF communication modules suffer from slow response times and poor flexibility in controlling RF switch and filter switching. Utility Model Content

[0004] The purpose of this application is to provide a multi-band radio frequency communication module that solves the technical problems of slow response speed and poor flexibility in the control of radio frequency switches and filters in the prior art.

[0005] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0006] A multi-band radio frequency communication module includes a radio frequency transceiver, a power amplifier module, a filter array, a channel quality detection module, and a zero-ohm resistance reconfigurable matrix;

[0007] An RF transceiver is used to receive and transmit RF signals, and its signal transceiver terminal is connected to the first signal transceiver terminal of the power amplifier module.

[0008] The power amplifier module amplifies the radio frequency signal, and its second signal transceiver terminal is connected to the first signal transceiver terminal of the channel quality detection module.

[0009] The channel quality detection module detects the channel quality of several parallel filters operating at different frequency bands.

[0010] The filter array includes several parallel filter channels of different frequency bands to filter radio frequency signals, and its first signal transceiver is connected to the second signal transceiver of the channel quality detection module.

[0011] A zero-ohm reconfigurable matrix is ​​used to realize the physical reconstruction of the filter array. The first signal transceiver of the zero-ohm reconfigurable matrix is ​​connected to the second signal transceiver of the filter array.

[0012] The channel quality detection module includes a directional coupler, a detector diode array, a peak hold circuit, a multi-comparator array, and a hardware encoder.

[0013] The directional coupler's coupling input terminal is coupled to the common terminal of the first selection switch, and the directional coupler's coupling output terminal is electrically connected to the RF input terminal of the detector diode array; the RF output terminal of the detector diode array is electrically connected to the RF input terminal of the peak hold circuit; the RF output terminal of the peak hold circuit is electrically connected to the RF input terminal of the multiple comparator array; and the RF output terminal of the multiple comparator array is connected to the input terminal of the hardware encoder.

[0014] The zero-ohm reconfigurable matrix has a 6*4 grid structure, including 24 zero-ohm resistance pads; the zero-ohm reconfigurable matrix includes 6 independent RF input ports and 2 independent RF output ports.

[0015] The left ends of the four pad sites in each row of the zero-ohm resistance reconfigurable matrix are electrically connected to the pads via the same horizontal microstrip line.

[0016] The right ends of the pads R0_0 to R5_0 in column 0 of the zero-ohm reconfigurable matrix are electrically connected to the first bypass bus via the same horizontal microstrip line; the right ends of the pads R0_1 to R5_1 in column 1 are electrically connected to the second bypass bus via the same horizontal microstrip line; the right ends of the pads R0_2 to R5_2 in column 2 are electrically connected to the first parallel bus via the same horizontal microstrip line, and the output of the first parallel bus is the first RF output port of the zero-ohm reconfigurable matrix; the right ends of the pads R0_3 to R5_3 in column 3 are electrically connected to the second parallel bus via the same horizontal microstrip line, and the output of the second parallel bus is the second RF output port of the zero-ohm reconfigurable matrix.

[0017] Preferably, the multi-band radio frequency communication module further includes a radio frequency switch module, an antenna module, and an antenna selection switch;

[0018] The radio frequency switch module includes a first selection switch, a second selection switch, and a third selection switch;

[0019] The antenna module includes a first antenna and a second antenna;

[0020] The first signal transceiver terminal of the first selection switch is connected to the signal transceiver terminal of the power amplifier module, and the second signal transceiver terminal of the first selection switch is connected to the signal transceiver terminal of the channel quality detection module.

[0021] The first signal transceiver terminal of the second selection switch is connected to the signal transceiver terminal of the channel quality detection module, and the second signal transceiver terminal of the second selection switch is connected to the signal transceiver terminal of the filter array.

[0022] The first signal transceiver terminal of the third selection switch is connected to the signal transceiver terminal of the zero-ohm resistance reconfigurable matrix, and the second signal transceiver terminal of the third selection switch is connected to the signal transceiver terminal of the antenna selection switch.

[0023] The antenna module switch control terminal and the antenna selection switch switch are connected.

[0024] Preferably, the electrical connection relationship of the transmission link of the multi-band radio frequency communication module is as follows: the transmission port TX1 of the radio frequency transceiver is electrically connected to the radio frequency input terminal of the first power amplifier, and the transmission port TX2 of the radio frequency transceiver is electrically connected to the radio frequency input terminal of the second power amplifier; the radio frequency output terminal of the first power amplifier is electrically connected to the first selection terminal of the first selection switch, and the radio frequency output terminal of the second power amplifier is electrically connected to the second selection terminal of the first selection switch; the common terminal of the first selection switch is coupled to the radio frequency input terminal of the channel quality detection module, and the common terminal of the first selection switch is also electrically connected to the common terminal of the second selection switch; the three binary output terminals of the channel quality detection module are respectively electrically connected to the three binary input control pins of the second selection switch.

[0025] The filter array includes a first filter, a second filter, a third filter, a fourth filter, a fifth filter, and a sixth filter; the input terminals of the first filter, the second filter, the third filter, the fourth filter, the fifth filter, and the sixth filter are respectively connected to the first selection terminal, the second selection terminal, the third selection terminal, the fourth selection terminal, the fifth selection terminal, and the sixth selection terminal of the second selection switch;

[0026] The outputs of the first, second, third, fourth, fifth, and sixth filters are electrically connected to the six input ports of the zero-ohm reconfigurable matrix, respectively. The two output ports of the zero-ohm reconfigurable matrix are connected to the first and second selection terminals of the third selection switch, respectively. The common terminal of the third selection switch is electrically connected to the RF input terminal of the antenna selection switch. The two RF output terminals of the antenna selection switch are electrically connected to the RF input terminals of the first antenna and the second antenna, respectively.

[0027] Preferably, the electrical connection relationship of the receiving link of the multi-band radio frequency communication module is as follows:

[0028] The RF receiving ports of the first and second antennas are electrically connected to the two antenna inputs of the antenna selection switch, respectively; the RF output of the antenna selection switch is electrically connected to the common terminal of the third selection switch; the two selection terminals of the third selection switch are electrically connected to the two output ports of the zero-ohm reconfigurable matrix, respectively; the six input ports of the zero-ohm reconfigurable matrix are electrically connected to the outputs of the six filters in the filter array, respectively; the inputs of the six filters are connected to the six selection terminals of the second selection switch, respectively; the common terminal of the second selection switch is electrically connected to the common terminal of the first selection switch, and the three-bit binary input control pin of the second selection switch is electrically connected to the three-bit binary output of the channel quality detection module, respectively; the third selection terminal of the first selection switch is electrically connected to the RF input of the shared low-noise amplifier, and the RF output of the shared low-noise amplifier is electrically connected to the RF receiving port RX of the RF transceiver.

[0029] Preferably, the multi-band radio frequency communication module further includes a power supply, a first enable switch, and a second enable switch; the DC power supply terminal of the first power amplifier is electrically connected to the power supply through the first enable switch, the DC power supply terminal of the second power amplifier is electrically connected to the power supply through the second enable switch, and the gate control terminals of the first enable switch and the second enable switch are electrically connected to the transmit enable signal line of the radio frequency transceiver.

[0030] The technical solution of this application has at least the following advantages and beneficial effects:

[0031] 1. This multi-band RF communication module achieves parallel detection and rapid comparison of signal strength in each frequency band through a hardware channel quality detection module, resulting in a faster response compared to traditional software control schemes;

[0032] The hardware channel quality detection module uses a pure hardware channel evaluation link, including a directional coupler, a detector diode array, a peak hold circuit, and a multi-comparator array, to achieve frequency band switching during the entire module's communication process. The directional coupler collects radio frequency signals of each frequency band in real time, the detector diode array converts radio frequency energy into DC voltage, the peak hold circuit captures the peak signal strength, and the multi-comparator array performs parallel comparison of signal strength of multiple frequency bands. This enables the RF switch to be driven to complete the switching, resulting in a faster overall switching response time and solving the problem of slow response speed in controlling the RF switch in the existing technology.

[0033] Addressing the issue of fixed RF front-end filter networks and single PCBs supporting only a single frequency band combination, this invention employs a zero-ohm reconfigurable matrix, enabling the RF communication module to be configured on a single circuit board and support multiple frequency band combinations without software adaptation. The zero-ohm reconfigurable matrix in this solution uses a 6×4 grid layout and reserves 24 solderable zero-ohm resistor points, allowing for selective soldering to achieve different operating modes. Attached Figure Description

[0034] Figure 1 This is a block diagram of the structure of this multi-band radio frequency communication module;

[0035] Figure 2 This is a detailed circuit diagram of the channel quality detection module of this utility model;

[0036] Figure 3 This is a block diagram of the zero-ohm reconfigurable matrix circuit structure of this utility model. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] A multi-band radio frequency communication module includes a radio frequency transceiver, a power amplifier module, a filter array, a channel quality detection module, and a zero-ohm resistor reconfigurable matrix;

[0040] The signal transceiver terminals of the RF transceiver are connected to the signal transceiver terminals of the power amplifier module; the signal transceiver terminals of the power amplifier module are connected to the signal transceiver terminals of the channel quality detection module; the signal transceiver terminals of the channel quality detection module are connected to the signal transceiver terminals of the filter array; and the signal transceiver terminals of the filter array are connected to the signal transceiver terminals of the zero-ohm resistance reconfigurable matrix.

[0041] The radio frequency transceiver is used to modulate baseband digital signals into transmittable radio frequency signals and receive radio frequency signals from a shared low-noise amplifier, and demodulate the received radio frequency signals; the power amplifier module is used to amplify radio frequency signals of different frequency bands; the filter array is used to filter the input radio frequency signals; the channel quality detection module realizes real-time monitoring of channel quality in a purely hardware manner.

[0042] A multi-band radio frequency communication module also includes a radio frequency switch module, an antenna module, and an antenna selection switch;

[0043] The radio frequency switch module includes a first selection switch, a second selection switch, and a third selection switch;

[0044] The antenna module includes a first antenna and a second antenna;

[0045] The first signal transceiver terminal of the first selection switch is connected to the signal transceiver terminal of the power amplifier module, and the second signal transceiver terminal of the first selection switch is connected to the signal transceiver terminal of the channel quality detection module.

[0046] The first signal transceiver terminal of the second selection switch is connected to the signal transceiver terminal of the channel quality detection module, and the second signal transceiver terminal of the second selection switch is connected to the signal transceiver terminal of the filter array.

[0047] The first signal transceiver terminal of the third selection switch is connected to the signal transceiver terminal of the zero-ohm resistance reconfigurable matrix, and the second signal transceiver terminal of the third selection switch is connected to the signal transceiver terminal of the antenna selection switch.

[0048] The antenna module switch control terminal and the antenna selection switch switch are connected;

[0049] The antenna selection switch controls the switching between the first and second antennas, enabling different operating modes for the dual antennas.

[0050] See Figure 1 In this embodiment, the detailed electrical connection relationship of the multi-band radio frequency communication module's transmit link is as follows:

[0051] The transmit port TX1 of the RF transceiver is electrically connected to the RF input terminal of the first power amplifier, and the transmit port TX2 of the RF transceiver is electrically connected to the RF input terminal of the second power amplifier; the RF output terminal of the first power amplifier is electrically connected to the first selection terminal of the first selection switch, and the RF output terminal of the second power amplifier is electrically connected to the second selection terminal of the first selection switch; the common terminal of the first selection switch is coupled to the RF input terminal of the channel quality detection module, and the common terminal of the first selection switch is also electrically connected to the common terminal of the second selection switch; the three binary output terminals of the channel quality detection module are electrically connected to the three binary input control pins of the second selection switch respectively.

[0052] Specifically, the filter array includes a first filter, a second filter, a third filter, a fourth filter, a fifth filter, and a sixth filter; the input terminals of the first filter, the second filter, the third filter, the fourth filter, the fifth filter, and the sixth filter are respectively connected to the first selection terminal, the second selection terminal, the third selection terminal, the fourth selection terminal, the fifth selection terminal, and the sixth selection terminal of the second selection switch;

[0053] It should be noted that the above filter is a surface acoustic wave filter, and the six selection terminals of the second selection switch are independent of each other.

[0054] The outputs of the first, second, third, fourth, fifth, and sixth filters are electrically connected to the six input ports of the zero-ohm reconfigurable matrix, respectively. The two output ports of the zero-ohm reconfigurable matrix are connected to the first and second selection terminals of the third selection switch, respectively. The common terminal of the third selection switch is electrically connected to the RF input terminal of the antenna selection switch. The two RF output terminals of the antenna selection switch are electrically connected to the RF input terminals of the first antenna and the second antenna, respectively.

[0055] In this embodiment, the detailed electrical connection relationship of the receiving link of the multi-band radio frequency communication module is as follows:

[0056] The RF receiving ports of the first and second antennas are electrically connected to the two antenna inputs of the antenna selection switch, respectively; the RF output of the antenna selection switch is electrically connected to the common terminal of the third selection switch; the two selection terminals of the third selection switch are electrically connected to the two output ports of the zero-ohm reconfigurable matrix, respectively; the six input ports of the zero-ohm reconfigurable matrix are electrically connected to the outputs of the six filters in the filter array, respectively; the inputs of the six filters are connected to the six selection terminals of the second selection switch, respectively; the common terminal of the second selection switch is electrically connected to the common terminal of the first selection switch, and the three-bit binary input control pin of the second selection switch is electrically connected to the three-bit binary output of the channel quality detection module, respectively; the third selection terminal of the first selection switch is electrically connected to the RF input of the shared low-noise amplifier, and the RF output of the shared low-noise amplifier is electrically connected to the RF receiving port RX of the RF transceiver.

[0057] It should be noted that the transmit link and receive link use time-division multiplexing to achieve isolation control of signal transmission and reception, and the transmit link and receive link multiplex the same physical transmission line.

[0058] In this embodiment, the first power amplifier operates in the N77 band, the second power amplifier operates in the N79 band, and the bandwidth of the shared low-noise amplifier covers both the N77 and N79 bands.

[0059] In this embodiment, the first selection switch is a single-pole triple-throw radio frequency switch. The first selection switch includes a common contact and three stationary contacts. At any given time, only one stationary contact is electrically connected to the common contact, while the other two stationary contacts are electrically isolated from the common contact. The first selection switch is used to control the radio frequency transceiver to perform hardware switching between the transmit and receive states, and to select between the two operating frequency bands, N77 and N79.

[0060] Specifically, when the multi-band radio frequency communication module is operating in N77 transmit mode, the common contact of the first selection switch is connected to the first selection terminal connected to the first power amplifier, while the second and third selection terminals are disconnected; at this time, the multi-band radio frequency communication module transmits the output signal of the first power amplifier.

[0061] Similarly, when the multi-band RF communication module is operating in N79 transmit mode, the common contact of the first selection switch is connected to the second selection terminal connected to the second power amplifier, and the first selection terminal and the third selection terminal are disconnected; at this time, the multi-band RF communication module transmits the output signal of the second power amplifier.

[0062] When the multi-band RF communication module is operating in receive mode, the common contact of the first selection switch is connected to the third selection terminal, while the second and third selection terminals are disconnected; in this case, the multi-band RF communication module receives RF signals.

[0063] The second selector switch is a three-pole six-throw switch, and the third selector switch is a single-pole double-throw switch.

[0064] The antenna selection switch is a double-pole double-throw switch, used to select the transmit channel, receive channel, and full-band receive channel between the first and second antennas. Both the first and second antennas are broadband antennas, covering the N77 and N79 frequency bands.

[0065] In this embodiment, the multi-band radio frequency communication module further includes a power supply, a first enable switch, and a second enable switch; the DC power supply terminal of the first power amplifier is electrically connected to the power supply through the first enable switch, the DC power supply terminal of the second power amplifier is electrically connected to the power supply through the second enable switch, and the gate control terminals of the first enable switch and the second enable switch are electrically connected to the transmit enable signal line of the radio frequency transceiver.

[0066] Specifically, when the RF transceiver outputs a receive enable signal, the first enable switch and the second enable switch of the first power amplifier and the second power amplifier are all forcibly turned off. In this case, even if the first selection switch is mistakenly switched to the first selection terminal or the second selection terminal, the output of the first power amplifier and the second power amplifier are in a passive high-impedance state, which will not affect the RF transceiver's signal reception.

[0067] When the RF transceiver outputs a transmit enable signal, the DC power supply to the shared low-noise amplifier is disconnected, and the shared low-noise amplifier is in a passive high-impedance state.

[0068] In this embodiment, see Figure 2 The channel quality detection module includes a directional coupler, a detector diode array, a peak hold circuit, a multi-channel comparator array, and a hardware encoder. The coupling input terminal of the directional coupler is coupled to the common terminal of the first selection switch, and the coupling output terminal of the directional coupler is electrically connected to the RF input terminal of the detector diode array. The RF output terminal of the detector diode array is electrically connected to the RF input terminal of the peak hold circuit. The RF output terminal of the peak hold circuit is electrically connected to the RF input terminal of the multi-channel comparator array. The RF output terminal of the multi-channel comparator array is connected to the input terminal of the hardware encoder.

[0069] Specifically, the detector diode array converts the input radio frequency signal into a DC voltage. After the DC voltage is held by the peak hold circuit, it is sent to the multi-channel comparator array. The multi-channel comparator array compares the six voltages and inputs the comparison results to the hardware encoder.

[0070] In some embodiments, the zero-ohm resistor reconfigurable matrix is ​​a 6*4 grid structure, including 24 zero-ohm resistor pads; the zero-ohm resistor reconfigurable matrix includes 6 independent RF input ports and 2 independent RF output ports. By selectively soldering zero-ohm resistors at different pads, multiple operating modes can be achieved.

[0071] See Figure 3 The first line contains four pads: R0_0, R0_1, R0_2, and R0_3; the second line contains four pads: R1_0, R1_1, R1_2, and R1_3; the third line contains four pads: R3_0, R3_1, R3_2, and R3_3; the fourth line contains four pads: R4_0, R4_1, R4_2, and R4_3; and the fifth line contains four pads: R5_0, R5_1, R5_2, and R5_3.

[0072] Specifically, the left ends of the four pad positions in each row are electrically connected to the pads via the same horizontal microstrip line.

[0073] For example, the left end of each of the four pad sites R0_0, R0_1, R0_2, and R0_3 in row 0 is electrically connected to the first pad via the same horizontal microstrip line; the left end of each of the four pad sites R1_0, R1_1, R1_2, and R1_3 in row 1 is electrically connected to the second pad via the same horizontal microstrip line.

[0074] Specifically, the connection rules of the zero-ohm reconfigurable matrix in the column direction are as follows: the right ends of pads R0_0 to R5_0 in column 0 are electrically connected to the first bypass bus through the same horizontal microstrip line; the right ends of pads R0_1 to R5_1 in column 1 are electrically connected to the second bypass bus through the same horizontal microstrip line; the right ends of pads R0_2 to R5_2 in column 2 are electrically connected to the first parallel bus through the same horizontal microstrip line, and the output of the first parallel bus is the first RF output port of the zero-ohm reconfigurable matrix; the right ends of pads R0_3 to R5_3 in column 3 are electrically connected to the second parallel bus through the same horizontal microstrip line, and the output of the second parallel bus is the second RF output port of the zero-ohm reconfigurable matrix.

[0075] More specifically, the operating modes include a first operating mode, a second operating mode, a third operating mode, and a fourth operating mode. The first operating mode is an independent mode, in which the six filters operate independently; the second operating mode is a parallel mode, in which filters of adjacent frequency bands are connected in parallel to widen the passband; the third operating mode is a bypass mode, in which a specific filter is short-circuited; and the fourth operating mode is a redundancy mode, in which two filters of the same frequency band are connected in parallel.

[0076] The following section uses the multi-band radio frequency communication module shown in the figure as an example to illustrate two of its working modes.

[0077] Operating Mode 1: Power-On Adaptive Frequency Band Selection. After the device powers on, the RF transceiver is in standby mode, and the first selection switch is set to the receive channel by default. The channel quality detection module immediately starts working. The directional coupler collects the background spectrum energy of the RF signal. After detection and comparison, the hardware encoder outputs the frequency band code with the cleanest current signal. For example, if the channel quality of the fourth filter is optimal, the encoder outputs "010", driving the second and third selection switches to automatically switch to the fourth filter path.

[0078] Operating Mode 2: Frequency Band Switching During Transmission. When the RF transceiver needs to transmit a signal, it first selects either the first or second power amplifier based on the service type. If the N77 band is initially selected for transmission, but during transmission the hardware channel quality detection module detects increased interference in the N77 band while the channel quality in the N79 band improves, the hardware encoder immediately updates the output code to "101". The second and third selection switches switch the filter to the sixth filter, and the first selection switch synchronously switches to the second power amplifier path, achieving seamless frequency band switching during transmission.

[0079] It should be noted that all the electronic devices mentioned in the above embodiments are available in domestic and international markets.

[0080] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A multi-band radio frequency communication module, characterized in that: It includes an RF transceiver, a power amplifier module, a filter array, a channel quality detection module, and a zero-ohm reconfigurable matrix; An RF transceiver is used to receive and transmit RF signals, and its signal transceiver terminal is connected to the first signal transceiver terminal of the power amplifier module. The power amplifier module amplifies the radio frequency signal, and its second signal transceiver terminal is connected to the first signal transceiver terminal of the channel quality detection module. The channel quality detection module detects the channel quality of several parallel filters operating at different frequency bands. The filter array includes several parallel filter channels of different frequency bands to filter radio frequency signals, and its first signal transceiver is connected to the second signal transceiver of the channel quality detection module. A zero-ohm reconfigurable matrix is ​​used to realize the physical reconstruction of the filter array. The first signal transceiver of the zero-ohm reconfigurable matrix is ​​connected to the second signal transceiver of the filter array. The channel quality detection module includes a directional coupler, a detector diode array, a peak hold circuit, a multi-comparator array, and a hardware encoder. The directional coupler's coupling input terminal is coupled to the common terminal of the first selection switch, and the directional coupler's coupling output terminal is electrically connected to the RF input terminal of the detector diode array. The RF output terminal of the detector diode array is electrically connected to the RF input terminal of the peak hold circuit; the RF output terminal of the peak hold circuit is electrically connected to the RF input terminal of the multiple comparator array; the RF output terminal of the multiple comparator array is connected to the input terminal of the hardware encoder. The zero-ohm reconfigurable matrix has a 6*4 grid structure, including 24 zero-ohm resistance pads; the zero-ohm reconfigurable matrix includes 6 independent RF input ports and 2 independent RF output ports. The left ends of the four pad sites in each row of the zero-ohm resistance reconfigurable matrix are electrically connected to the pads via the same horizontal microstrip line. The right ends of the pads R0_0 to R5_0 in column 0 of the zero-ohm reconfigurable matrix are electrically connected to the first bypass bus via the same horizontal microstrip line; the right ends of the pads R0_1 to R5_1 in column 1 are electrically connected to the second bypass bus via the same horizontal microstrip line; the right ends of the pads R0_2 to R5_2 in column 2 are electrically connected to the first parallel bus via the same horizontal microstrip line, and the output of the first parallel bus is the first RF output port of the zero-ohm reconfigurable matrix; the right ends of the pads R0_3 to R5_3 in column 3 are electrically connected to the second parallel bus via the same horizontal microstrip line, and the output of the second parallel bus is the second RF output port of the zero-ohm reconfigurable matrix.

2. The multi-band radio frequency communication module according to claim 1, characterized in that, It also includes an RF switch module, an antenna module, and an antenna selection switch; The radio frequency switch module includes a first selection switch, a second selection switch, and a third selection switch; The antenna module includes a first antenna and a second antenna; The first signal transceiver terminal of the first selection switch is connected to the signal transceiver terminal of the power amplifier module, and the second signal transceiver terminal of the first selection switch is connected to the signal transceiver terminal of the channel quality detection module. The first signal transceiver terminal of the second selection switch is connected to the signal transceiver terminal of the channel quality detection module, and the second signal transceiver terminal of the second selection switch is connected to the signal transceiver terminal of the filter array. The first signal transceiver terminal of the third selection switch is connected to the signal transceiver terminal of the zero-ohm resistance reconfigurable matrix, and the second signal transceiver terminal of the third selection switch is connected to the signal transceiver terminal of the antenna selection switch. The antenna module switch control terminal and the antenna selection switch switch are connected.

3. The multi-band radio frequency communication module according to claim 1, characterized in that, The electrical connections of the transmission link of the multi-band RF communication module are as follows: the transmit port TX1 of the RF transceiver is electrically connected to the RF input terminal of the first power amplifier, and the transmit port TX2 of the RF transceiver is electrically connected to the RF input terminal of the second power amplifier; the RF output terminal of the first power amplifier is electrically connected to the first selection terminal of the first selection switch, and the RF output terminal of the second power amplifier is electrically connected to the second selection terminal of the first selection switch; the common terminal of the first selection switch is coupled to the RF input terminal of the channel quality detection module, and the common terminal of the first selection switch is also electrically connected to the common terminal of the second selection switch; the three binary output terminals of the channel quality detection module are electrically connected to the three binary input control pins of the second selection switch. The filter array includes a first filter, a second filter, a third filter, a fourth filter, a fifth filter, and a sixth filter; the input terminals of the first filter, the second filter, the third filter, the fourth filter, the fifth filter, and the sixth filter are respectively connected to the first selection terminal, the second selection terminal, the third selection terminal, the fourth selection terminal, the fifth selection terminal, and the sixth selection terminal of the second selection switch; The outputs of the first, second, third, fourth, fifth, and sixth filters are electrically connected to the six input ports of the zero-ohm reconfigurable matrix, respectively. The two output ports of the zero-ohm reconfigurable matrix are connected to the first and second selection terminals of the third selection switch, respectively; the common terminal of the third selection switch is electrically connected to the RF input terminal of the antenna selection switch. The two RF output terminals of the antenna selection switch are electrically connected to the RF input terminals of the first antenna and the second antenna, respectively.

4. The multi-band radio frequency communication module according to claim 1, characterized in that, The electrical connection relationship of the receiving link of the multi-band radio frequency communication module is as follows: The RF receiving ports of the first and second antennas are electrically connected to the two antenna input terminals of the antenna selection switch, respectively; the RF output terminal of the antenna selection switch is electrically connected to the common terminal of the third selection switch. The two selection terminals of the third selection switch are electrically connected to the two output ports of the zero-ohm reconfigurable matrix, respectively. The six input ports of the zero-ohm reconfigurable matrix are electrically connected to the outputs of the six filters in the filter array, respectively; the inputs of the six filters are connected to the six selection terminals of the second selection switch, respectively; the common terminal of the second selection switch is electrically connected to the common terminal of the first selection switch, and the three binary input control pins of the second selection switch are connected to the three binary outputs of the channel quality detection module, respectively; the third selection terminal of the first selection switch is electrically connected to the RF input terminal of the shared low-noise amplifier, and the RF output terminal of the shared low-noise amplifier is electrically connected to the RF receiver port RX of the RF transceiver.

5. A multi-band radio frequency communication module according to claim 1, characterized in that, The multi-band radio frequency communication module further includes a power supply, a first enable switch, and a second enable switch; the DC power supply terminal of the first power amplifier is electrically connected to the power supply through the first enable switch, the DC power supply terminal of the second power amplifier is electrically connected to the power supply through the second enable switch, and the gate control terminals of the first and second enable switches are electrically connected to the transmit enable signal line of the radio frequency transceiver.

Images