A radio frequency detection module, a front-end frequency conversion module and a radio frequency front-end device

Abstract

The utility model discloses a radio frequency detection module, front end frequency conversion module and radio frequency front end device, specifically at radio frequency detection field, its characterized in that: front end frequency conversion module is equipped with the cavity, detachable installation has radio frequency detection circuit board in the cavity, the top surface of radio frequency detection circuit board is equipped with the baffle, and install radio frequency detection module on radio frequency detection circuit board as described, still be equipped with receiving down conversion unit in the cavity, receiving down conversion unit includes a plurality of radio frequency input ports and sequentially connected single -pole three -throw switch, first amplifier, band -pass filter, attenuator, frequency mixer, low pass filter and second amplifier, the input of radio frequency input circuit is with radio frequency input port's output through first paster connection, single -pole double -throw switch's output and single -pole three -throw switch's input are through second paster connection.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency detection, specifically to a radio frequency detection module, a front-end frequency conversion module, and a radio frequency front-end device. Background Technology

[0002] In the existing technology, the radio frequency front-end module adopts a microstrip circuit structure design. The radio frequency unit is assembled by mounting microstrip circuit chips and bare chips inside the cavity using micro-assembly technology. The cavity is a segmented form machined by CNC milling, with independent cover plates to avoid radio frequency signal crosstalk. The power supply control circuit is assembled on a printed circuit board using electrical assembly technology to realize the power supply control function.

[0003] The micro-assembly process involves multiple steps, including chip mounting, bare chip bonding, and gold wire / ribbon bonding. All of these steps require manual operation, which is very time-consuming and labor-intensive. At the same time, the chip mounting process requires the use of clamps and C-clamps, and involves steps such as cleaning, bonding, pressing, and baking. The assembly time is directly proportional to the complexity of the module circuit structure, which requires high manual operation skills and is not conducive to mass production of products.

[0004] Therefore, the present invention aims to provide an RF detection module, a front-end frequency conversion module, and an RF front-end device to solve the aforementioned problems. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing RF front-end modules, due to their microstrip circuit structure design and micro-assembly process, are difficult to automate, thus affecting production efficiency. The purpose is to provide an RF detection module, a front-end frequency converter module, and an RF front-end device. By using a planar circuit structure to mount the RF detection module, which has a high circuit repetition rate, on the main circuit board, the RF detection module's area is divided. First and second patches are connected to the circuit units on the RF detection circuit board, enabling automated assembly of this area's circuitry using an automated placement machine and bonding machine. After assembly, this area's circuitry, along with a detachable partition, is installed into the receiving down-conversion unit, thereby achieving RF detection and electromagnetic shielding functions. This method effectively improves the assembly efficiency of the micro-assembly process, facilitating large-scale mass production of the product.

[0006] This utility model is achieved through the following technical solution:

[0007] A radio frequency (RF) detection module includes multiple RF input circuits, multiple power dividers, multiple single-pole double-throw (SPD) switches, and multiple detectors. The output terminal of each RF input circuit is connected to the input terminal of the corresponding power divider. The first output terminals of every two power dividers are respectively connected to the two input terminals of the same SPD switch. The second output terminal of each power divider is connected to the input terminal of the corresponding detector. The output terminal of each detector is connected to the detection voltage input terminal of the power supply control unit.

[0008] Furthermore, the number of the RF input circuit, power divider, and detector is the same; the number of the single-pole double-throw switches is half that of the RF input circuit.

[0009] The present invention also provides a front-end frequency converter module, wherein the front-end frequency converter module is provided with a cavity, and a radio frequency detection circuit board is detachably installed in the cavity. The top surface of the radio frequency detection circuit board is provided with a partition, and the radio frequency detection module as described above is installed on the radio frequency detection circuit board.

[0010] The cavity is also equipped with a receiving down-conversion unit, which includes multiple radio frequency input ports and a single-pole triple-throw switch, a first amplifier, a bandpass filter, an attenuator, a mixer, a low-pass filter, and a second amplifier connected in sequence. The input terminal of the radio frequency input circuit is connected to the output terminal of the radio frequency input port through a first patch, and the output terminal of the single-pole double-throw switch is connected to the input terminal of the single-pole triple-throw switch through a second patch.

[0011] Furthermore, the partition is provided with multiple first circuit channels, multiple second circuit channels, and multiple third circuit channels. Multiple radio frequency input circuits are sequentially placed in multiple first circuit channels, multiple detectors are sequentially placed in multiple second circuit channels, multiple single-pole double-throw switches are sequentially placed in multiple third circuit channels, and multiple power dividers are sequentially placed at the connection points of multiple first circuit channels and multiple second circuit channels.

[0012] Furthermore, the partition is detachably connected to the radio frequency detection circuit board.

[0013] Furthermore, the number of the first patch and the number of RF input circuits are the same, and the number of the second patch and the number of single-pole double-throw switches are the same.

[0014] Furthermore, the bottom of the cavity is provided with a circuit board mounting slot, and the radio frequency detection circuit board is detachably installed in the circuit board mounting slot, and the radio frequency detection circuit board is located on the same plane as the bottom of the cavity.

[0015] Furthermore, the number of radio frequency input circuits is six.

[0016] The present invention also provides a radio frequency front-end device, the device comprising a main body, an interface control unit, and a front-end frequency conversion module as described in any of the above claims; the front-end frequency conversion module is disposed on one side of the main body, and the interface control unit is disposed on the other side of the main body; the interface control unit includes an interface control unit circuit board, and a LARM connector is provided on one side of the interface control unit circuit board, one end of the LARM connector is used to receive external radio frequency signals, the other end of the LARM connector is connected to one end of a radio frequency connector on the main body via a miniature cable, and the other end of the radio frequency connector is connected to a radio frequency input port.

[0017] Furthermore, a power supply control unit, a local oscillator unit, and a transmitting up-conversion unit are also installed at the bottom of the cavity; the first local oscillator signal output terminal of the local oscillator unit is connected to the first local oscillator signal input terminal of the receiving down-conversion unit, the second local oscillator signal output terminal of the local oscillator unit is connected to the second local oscillator signal input terminal of the transmitting up-conversion unit, the first clock reference signal input terminal of the local oscillator unit is connected to the first clock reference signal output terminal of the power supply control unit, and the first power supply control input terminal of the local oscillator unit is connected to the first power supply control output terminal of the power supply control unit;

[0018] The second power supply control output terminal of the power supply control unit is connected to the second power supply control input terminal of the receiving down-conversion unit; the third power supply control output terminal of the power supply control unit is connected to the third power supply control input terminal of the transmitting up-conversion unit; the detector voltage input terminal of the power supply control unit is connected to the detector voltage output terminal of the receiving down-conversion unit; the fourth power supply control input terminal of the power supply control unit is connected to the fourth power supply control output terminal of the interface control unit; and the second clock reference signal input terminal of the power supply control unit is connected to the second clock reference signal output terminal of the interface control unit.

[0019] The first intermediate frequency (IF) input terminal of the interface control unit is connected to the first IF output terminal of the receiving downconversion unit, the second IF output terminal of the interface control unit is connected to the second IF input terminal of the transmitting upconversion unit, the radio frequency (RF) input terminal of the interface control unit is connected to the transmitting excitation output terminal of the transmitting upconversion unit, and the RF output terminal of the interface control unit is connected to the RF input port of the receiving downconversion unit.

[0020] The third clock reference signal input port of the interface control unit is used to receive an external clock reference signal; the fifth power supply control input terminal of the interface control unit is used to receive an external power supply control signal; and the broadband protection signal output terminal of the interface control unit is used to output a broadband protection signal.

[0021] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0022] In this invention, the RF detection module, which has a high repetition rate in its circuit structure, is placed on the main circuit board in a planar circuit structure to complete the regional division of the RF detection module. The first and second patches are connected to the circuit units on the RF detection circuit board, respectively, so that the circuit in this area can be automatically assembled using an automated pick-and-place machine and a bonding machine. After assembly, this area of ​​circuit is then installed together with a detachable partition into the receiving downconversion unit, thereby realizing the RF detection function and electromagnetic shielding function. This method effectively improves the assembly efficiency of the micro-assembly process and helps to realize the large-scale mass production of the product. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0024] Figure 1 A circuit connection diagram of a radio frequency detection module is shown;

[0025] Figure 2 A schematic diagram of a front-end frequency converter module is shown.

[0026] Figure 3 A top view of the radio frequency detection circuit board is shown.

[0027] Figure 4 A schematic diagram of the structure of a radio frequency front-end device is shown;

[0028] Figure 5 A circuit connection diagram of a radio frequency front-end device is shown.

[0029] The attached diagram shows the markings and corresponding component names:

[0030] 1. Cavity; 2. RF detector circuit board; 3. Separator; 4. First circuit channel; 5. Second circuit channel; 6. Third circuit channel; 7. Main body; 8. Interface control unit; 9. Front-end frequency converter module; 10. LARM connector; 11. Cover plate; 12. RF connector; 13. First patch; 14. Second patch. Detailed Implementation

[0031] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0032] In this disclosure, unless otherwise stated, the use of terms such as "first," "second," etc., to describe various elements is not intended to limit the positional, temporal, or importance relationships of these elements; such terms are merely used to distinguish one element from another. In some examples, the first element and the second element may refer to the same instance of that element, while in other cases, based on the context, they may refer to different instances.

[0033] The terminology used in the description of the various examples in this disclosure is for the purpose of describing particular examples only and is not intended to be limiting. Unless the context explicitly indicates otherwise, an element may be one or more unless the number of elements is specifically limited. Furthermore, the term "and / or" as used in this disclosure covers any one of the listed items and all possible combinations thereof.

[0034] Example

[0035] See Figure 1 , Figure 1 A circuit connection diagram of an RF detection module is shown. The RF detection module includes six RF input circuits, six power dividers, three single-pole double-throw switches, and six detectors. The output of each RF input circuit is connected to the input of the corresponding power divider. The first output of every two power dividers is connected to the two inputs of the same single-pole double-throw switch. The second output of each power divider is connected to the input of the corresponding detector. The output of each detector is connected to the detection voltage input of the power supply control unit.

[0036] It should be noted that in this embodiment, six RF input circuits, six power dividers, three single-pole double-throw switches, and six detectors form a six-channel detection unit with RF signal detection function. In other embodiments, other numbers of RF input circuits, power dividers, single-pole double-throw switches, and detectors can be set according to actual needs to form other channels of detection units with RF signal detection function. No further restrictions are imposed here. The power divider is used to split the RF signal into two paths that are simultaneously input to the RF channel and the detection circuit, thereby realizing the detection and reporting of the amplitude of the input RF signal. The single-pole double-throw switches are used to select the two input RF signals. There are three single-pole double-throw switches in the six RF input detection channels. Together with the single-pole triple-throw switch of the receiving downconverter unit, they achieve the control requirement of selecting the six RF signals and outputting the RF signal with the largest amplitude.

[0037] See Figure 2 , Figure 2 A schematic diagram of a front-end frequency converter module 9 is shown. The front-end frequency converter module 9 is provided with a cavity 1. A radio frequency detection circuit board 2 is detachably installed in the cavity 1. A partition 3 is detachably installed on the top surface of the radio frequency detection circuit board 2. The radio frequency detection module mentioned above is installed on the radio frequency detection circuit board 2.

[0038] The cavity 1 is also fixedly installed with a receiving downconversion unit, which includes six RF input ports and a single-pole triple-throw switch, a first amplifier, a bandpass filter, an attenuator, a mixer, a low-pass filter, and a second amplifier connected in sequence. The input terminal of the RF input circuit is connected to the output terminal of the RF input port through a first patch 13, and the output terminal of the single-pole double-throw switch is connected to the input terminal of the single-pole triple-throw switch through a second patch 14.

[0039] Specifically, in this embodiment, a circuit board mounting groove is chiseled on the inner side of the bottom of the cavity 1, and the radio frequency detection circuit board 2 is detachably installed in the circuit board mounting groove, so that the radio frequency detection circuit board 2 and the bottom of the cavity 1 are on the same plane; at the same time, the receiving downconversion unit adopts a microstrip circuit assembly method, and the components in the receiving downconversion unit are directly assembled on the bottom inner side of the cavity 1 through processes such as circuit chip mounting, bare chip bonding, and gold wire and gold strip bonding; finally, the receiving downconversion unit and the radio frequency detection module are connected through the first patch 13 and the second patch 14. This assembly method is a conventional technical means in the field and will not be described in detail here.

[0040] It should be noted that in this embodiment, the six detection units formed by the RF detection module are arranged sequentially on the RF detection circuit board 2, with each RF input circuit corresponding to each RF input port. The RF detection module is designed as a planar circuit structure that uses a multi-layer composite substrate to transmit RF signals, and is separately set on the detachable RF detection circuit board 2. This allows for automated assembly of this area of ​​the circuit using automated pick-and-place machines and bonding machines. After assembly, this area of ​​the circuit is then installed together with the detachable partition 3 into the receiving downconverter unit, thereby realizing the RF detection function and electromagnetic shielding function. This method effectively improves the assembly efficiency of the micro-assembly process, reducing the assembly time by about 50%, which helps to achieve large-scale mass production of products and ensures the assembly consistency and reliability of the module mass production.

[0041] It should also be noted that in this embodiment, the number of first patches 13 and RF input circuits is the same, and the number of second patches 14 and single-pole double-throw switches is the same. The first patches 13 correspond one-to-one with the RF input circuits, and the second patches 14 correspond one-to-one with the single-pole double-throw switches.

[0042] In another implementation, see Figure 3 , Figure 3 A top view of the radio frequency detector circuit board 2 is shown. The partition 3 has six first circuit channels 4, six second circuit channels 5, and three third circuit channels 6. The six radio frequency input circuits are placed in the six first circuit channels 4, the six detectors are placed in the six second circuit channels 5, the three single-pole double-throw switches are placed in the three third circuit channels 6, and the six power dividers are placed at the connection points of the six first circuit channels 4 and the two circuit channels 5.

[0043] See Figure 4 , Figure 4 A schematic diagram of a radio frequency front-end device is shown, wherein the device includes a main body 7, an interface control unit 8, and the aforementioned front-end frequency conversion module 9; the front-end frequency conversion module 9 is fixedly installed on one side of the main body 7, and the interface control unit 8 is fixedly installed on the other side of the main body 7; a cover plate 11 is also provided on the side of the interface control unit 8 away from the main body 7; the interface control unit 8 includes an interface control unit 8 circuit board, and a LARM connector 10 is provided on one side of the interface control unit 8 circuit board. One end of the LARM connector 10 is used to receive external radio frequency signals, and the other end of the LARM connector 10 is connected to one end of the radio frequency connector 12 on the main body 7 through a micro cable. The other end of the radio frequency connector 12 is connected to the radio frequency input port.

[0044] The bottom of cavity 1 is also equipped with a power supply control unit, a local oscillator unit, and a transmitter up-conversion unit. It should be noted that in this embodiment, the local oscillator unit and the transmitter up-conversion unit are both located at the inner bottom of cavity 1, while the power supply control unit is installed at the outer bottom of cavity 1, separated from the local oscillator unit, the transmitter up-conversion unit, and the transmitter down-conversion unit, thus providing electromagnetic shielding. The above installation methods are all conventional techniques in the art and will not be elaborated further here. It should also be noted that the power supply control unit includes a zero-adjustment circuit and an operational amplifier, and the interface control unit 8 includes an AD converter and an FPGA, all of which employ conventional techniques in the art. At the same time, the local oscillator unit and the transmitter up-conversion unit also employ conventional techniques in the art and will not be subject to further restrictions here.

[0045] See Figure 5 As shown, Figure 5 A circuit connection diagram of an RF front-end device is shown. The first local oscillator signal output terminal 101 of the local oscillator source unit is connected to the first local oscillator signal input terminal 102 of the receiving down-conversion unit. The second local oscillator signal output terminal 103 of the local oscillator source unit is connected to the second local oscillator signal input terminal 104 of the transmitting up-conversion unit. The first clock reference signal input terminal 105 of the local oscillator source unit is connected to the first clock reference signal output terminal 106 of the power supply control unit. The first power supply control input terminal 107 of the local oscillator source unit is connected to the first power supply control output terminal 108 of the power supply control unit.

[0046] The second power supply control output terminal 109 of the power supply control unit is connected to the second power supply control input terminal 110 of the receiving downconversion unit; the third power supply control output terminal 111 of the power supply control unit is connected to the third power supply control input terminal 112 of the transmitting upconversion unit; the detector voltage input terminals 113-118 of the power supply control unit are connected to the detector voltage output terminals 119-124 of the receiving downconversion unit; the fourth power supply control input terminal 125 of the power supply control unit is connected to the fourth power supply control output terminal 126 of the interface control unit; and the second clock reference signal input terminal 127 of the power supply control unit is connected to the second clock reference signal output terminal 128 of the interface control unit.

[0047] The first intermediate frequency input terminal 129 of the interface control unit is connected to the first intermediate frequency output terminal 130 of the receiving downconversion unit, the second intermediate frequency output terminal 131 of the interface control unit is connected to the second intermediate frequency input terminal 132 of the transmitting upconversion unit, the radio frequency input terminals 133-135 of the interface control unit are connected to the transmitting excitation output terminals 136-138 of the transmitting upconversion unit, and the radio frequency output terminals 139-144 of the interface control unit are connected to the radio frequency input ports 145-150 of the receiving downconversion unit.

[0048] The third clock reference signal input port 151 of the interface control unit is used to receive an external clock reference signal; the fifth power supply control input port 152 of the interface control unit is used to receive an external power supply control signal; and the broadband protection signal output port 153 of the interface control unit is used to output a broadband protection signal.

[0049] It should be noted that in this embodiment, all circuit components adopt miniaturization and cavity-isolated anti-crosstalk design; the local oscillator unit, power supply control unit, and interface control unit are assembled using automated electrical assembly process. The above assembly methods are all conventional technical means in the field and will not be described in detail here; external radio frequency signals are interconnected with internal radio frequency circuits through the interface control unit. Flexible boards and pluggable multi-core connectors are used between the interface control unit and the power supply control unit, as well as between the power supply control unit and the radio frequency detection module, instead of traditional soldered interconnection traces. This not only improves the integration of the module, but also enables flexible disassembly of unit circuits, facilitating hierarchical debugging and testing of the module, and can effectively improve the debugging efficiency of mass production of products; radio frequency connectors, pluggable multi-core connectors, and micro-miniature cables are all conventional technical solutions in the field and will not be limited here.

[0050] It should also be noted that in this embodiment, the radio frequency front-end device can select the receiving mode and the transmitting mode through the serial port program. This technique is a conventional technique in the field and will not be described in detail here.

[0051] Specifically, in this embodiment, the RF detection module is used as the input circuit of the receiving downconversion unit, with 6-channel RF signal detection function. It adopts an automated assembly circuit form, which has the characteristics of simple and efficient assembly. The transmitting upconversion unit has the characteristics of frequency conversion function, good output power flatness, and high harmonic suppression. The local oscillator unit provides an external reference to the point frequency source to generate a fixed frequency signal. This signal is amplified, switched, and filtered and then provided to the local oscillator ports of the receiving downconversion unit and the transmitting upconversion unit, respectively, which has the characteristics of high frequency stability, accuracy, and low phase noise. The power supply control unit has power supply and control functions, as well as low power consumption and fast response. The interface control unit has the functions of sampling, amplitude comparison, gating control of 6-channel detection signals, outputting RF signal bandwidth-preserving signals, and external interconnection of RF, control, and power supply interfaces.

[0052] Meanwhile, in this embodiment, the receiving downconversion unit effectively achieves good gain flatness and high harmonic suppression under the input signal power range of -50dBm to 0dBm by adjusting the input signal power of the mixer and amplifier when amplifying the signal, and by setting a filter at a specific position.

[0053] The downconversion unit of the RF front-end module, under an input signal power range of -50dBm to 0dBm, achieves the following specifications: intermediate frequency (IF) output signal power range of -14dBm to +4dBm, in-band spurious emissions of 40dBc, harmonic suppression of 30dBc, and out-of-band suppression of 50dBc. The upconversion unit of the transmitter, under an input signal power range of -20dBm to 0dBm, achieves the following specifications: transmit excitation output signal power range of +7dBm to +11dBm, spurious emissions of 35dBc, harmonic suppression of 45dBc, and out-of-band suppression of 25dBc. Therefore, the receiving channel of the RF front-end module exhibits good gain flatness and high harmonic suppression; the transmitting channel exhibits good output signal power flatness and high harmonic suppression.

[0054] Working principle: The 100MHz clock reference signal is input from the third clock reference signal input port 151 of the interface control unit, and after being amplified and filtered by the power supply control unit, it is input to the first clock reference signal input port 105 of the local oscillator unit;

[0055] When the receiving mode control is active, a 100MHz clock reference signal is input from the first clock reference signal input terminal 105 of the local oscillator unit, and at the same time, a control signal is input from the first power supply control input terminal 107 of the local oscillator unit; the first local oscillator signal output terminal 101 of the local oscillator unit outputs the local oscillator signal to the first local oscillator signal input terminal 102 of the receiving downconverter unit, and provides it to the local oscillator port of the mixer.

[0056] When the transmit mode control is active, a 100MHz clock reference signal is input from the first clock reference signal input terminal 105 of the local oscillator unit, and a control signal is input from the first power supply control input terminal 107 of the local oscillator unit. The second local oscillator signal output terminal 103 of the local oscillator unit outputs the local oscillator signal to the second local oscillator signal input terminal 104 of the transmit upconversion unit, providing it to the local oscillator port of the transmit upconversion unit.

[0057] After the receiving mode is activated, the six RF input signals are input through the LARM connector input port in the interface control unit, and the RF output terminals 139-144 of the LARM connector are interconnected with the six receiving downconverter RF input ports 145-150 via miniature cables and RF connectors for output. Then, they pass through the six RF input circuits, power divider, and detector of the RF detection module in sequence, generating six detection voltages, which are output to the feed control unit via the detection voltage output terminals 119-124. The six detection voltages are reduced by the zero-adjustment circuit of the feed control unit to reduce the noise floor interference of the receiving channel, and then amplified by the operational amplifier before being output to the A / D converter of the interface control unit. After analog-to-digital conversion, they are output to the FPGA, thus completing the RF signal sampling.

[0058] The sampled and reported information undergoes amplitude comparison and bandwidth preservation processing within the FPGA. The signal with the largest amplitude among the six RF signals is selected, and a control command is sent to the receiving downconverter unit to enable this signal to continue transmission after being selected by a single-pole double-throw switch. At the same time, the bandwidth preservation signal is reported to the external extension unit through the interface control unit. The RF selection signal output from the RF detection module passes sequentially through a single-pole triple-throw switch, a first amplifier, a bandpass filter, an attenuator, the RF port and intermediate frequency port of the mixer, a low-frequency filter, and a second amplifier. The downconverted intermediate frequency signal is then output from the first intermediate frequency output terminal 130 of the receiving downconverter unit.

[0059] After the transmit mode is turned on, the intermediate frequency signal is input from the second intermediate frequency input terminal 132 of the transmit upconversion unit, and the three transmit excitation signals after upconversion are output from the transmit excitation output terminals 136-138 of the transmit upconversion unit.

[0060] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A radio frequency detection module, characterized by, The radio frequency detection module includes multiple radio frequency input circuits, multiple power dividers, multiple single-pole double-throw switches, and multiple detectors. The output terminal of each radio frequency input circuit is connected to the input terminal of the corresponding power divider. The first output terminals of every two power dividers are respectively connected to the two input terminals of the same single-pole double-throw switch. The second output terminal of each power divider is connected to the input terminal of the corresponding detector. The output terminal of each detector is connected to the detection voltage input terminal of the power supply control unit.

2. The radio frequency detection module of claim 1, wherein, The number of RF input circuits, power dividers, and detectors is the same; the number of single-pole double-throw switches is half that of the RF input circuits.

3. A front-end frequency conversion module, characterized by, The front-end frequency conversion module is provided with a cavity, and a radio frequency detection circuit board is detachably installed in the cavity. The top surface of the radio frequency detection circuit board is provided with a partition, and the radio frequency detection module as described in claim 1 is installed on the radio frequency detection circuit board. The cavity is also equipped with a receiving down-conversion unit, which includes multiple radio frequency input ports and a single-pole triple-throw switch, a first amplifier, a bandpass filter, an attenuator, a mixer, a low-pass filter, and a second amplifier connected in sequence. The input terminal of the radio frequency input circuit is connected to the output terminal of the radio frequency input port through a first patch, and the output terminal of the single-pole double-throw switch is connected to the input terminal of the single-pole triple-throw switch through a second patch.

4. The front-end frequency conversion module of claim 3, wherein, The partition is provided with multiple first circuit channels, multiple second circuit channels and multiple third circuit channels. Multiple radio frequency input circuits are placed in multiple first circuit channels in sequence, multiple detectors are placed in multiple second circuit channels in sequence, multiple single-pole double-throw switches are placed in multiple third circuit channels in sequence, and multiple power dividers are placed at the connection points of multiple first circuit channels and multiple second circuit channels in sequence.

5. The front-end frequency conversion module of claim 3, wherein, The partition is detachably connected to the radio frequency detection circuit board.

6. The front-end frequency conversion module of claim 3, wherein, The number of the first patch and the number of RF input circuits are the same, and the number of the second patch and the number of single-pole double-throw switches are the same.

7. The front-end block of claim 3, wherein the first mixer is a Gilbert cell mixer. The bottom of the cavity is provided with a circuit board mounting slot, and the radio frequency detection circuit board is detachably installed in the circuit board mounting slot, and the radio frequency detection circuit board is located on the same plane as the bottom of the cavity.

8. The front-end frequency conversion module of claim 6, wherein, The number of radio frequency input circuits is six.

9. A radio frequency front-end device, comprising: The device includes a main body, an interface control unit, and a front-end frequency converter module as described in any one of claims 3-8; the front-end frequency converter module is located on one side of the main body, and the interface control unit is located on the other side of the main body; the interface control unit includes an interface control unit circuit board, and a LARM connector is provided on one side of the interface control unit circuit board. One end of the LARM connector is used to receive external radio frequency signals, and the other end of the LARM connector is connected to one end of a radio frequency connector on the main body via a miniature cable. The other end of the radio frequency connector is connected to a radio frequency input port.

10. A radio frequency front end arrangement according to claim 9, characterized in that, The bottom of the cavity is also equipped with a power supply control unit, a local oscillator unit, and a transmitting up-conversion unit; the first local oscillator signal output terminal of the local oscillator unit is connected to the first local oscillator signal input terminal of the receiving down-conversion unit, the second local oscillator signal output terminal of the local oscillator unit is connected to the second local oscillator signal input terminal of the transmitting up-conversion unit, the first clock reference signal input terminal of the local oscillator unit is connected to the first clock reference signal output terminal of the power supply control unit, and the first power supply control input terminal of the local oscillator unit is connected to the first power supply control output terminal of the power supply control unit; The second power supply control output terminal of the power supply control unit is connected to the second power supply control input terminal of the receiving down-conversion unit; the third power supply control output terminal of the power supply control unit is connected to the third power supply control input terminal of the transmitting up-conversion unit; the detector voltage input terminal of the power supply control unit is connected to the detector voltage output terminal of the receiving down-conversion unit; the fourth power supply control input terminal of the power supply control unit is connected to the fourth power supply control output terminal of the interface control unit; and the second clock reference signal input terminal of the power supply control unit is connected to the second clock reference signal output terminal of the interface control unit. The first intermediate frequency (IF) input terminal of the interface control unit is connected to the first IF output terminal of the receiving downconversion unit, the second IF output terminal of the interface control unit is connected to the second IF input terminal of the transmitting upconversion unit, the radio frequency (RF) input terminal of the interface control unit is connected to the transmitting excitation output terminal of the transmitting upconversion unit, and the RF output terminal of the interface control unit is connected to the RF input port of the receiving downconversion unit. The third clock reference signal input port of the interface control unit is used to receive an external clock reference signal; The fifth power supply control input terminal of the interface control unit is used to receive external power supply control signals; The broadband protection signal output terminal of the interface control unit is used to output a broadband protection signal.

Images