18-40G transceiver module with 2G instantaneous bandwidth

Abstract

The invention discloses an 18-40G transceiver module with a 2G instantaneous bandwidth, and relates to the field of signal processing, and the 18-40G transceiver module with the 2G instantaneous bandwidth comprises a down-conversion link which is used for receiving an input 18-40GHz signal, converting the input 18-40GHz signal into a 0.4-2.4 GHz signal after the input 18-40GHz signal is mixed by a frequency hopping local oscillator signal 18-34GHz and a fixed local oscillator signal 9.4 GHz in sequence, and outputting the 0.4-2.4 GHz signal to a baseband processing unit; the local oscillation generation link is used for generating a frequency hopping local oscillation signal 18-34 GHz and a fixed local oscillation signal 9.4 GHz and assisting the down-conversion link and the up-conversion link to work; compared with the prior art, the invention has the following beneficial effects: AD sampling can reach an instantaneous bandwidth of 2GHz by changing a frequency conversion mode; a link is made into a single module, and a VPX connector is used, thereby facilitating the overall plugging, enabling the whole system to be modularized, and improving the integration level.

Description

Technical Field

[0001] The invention relates to the field of signal processing, and in particular to an 18-40G transceiver module with a 2G instantaneous bandwidth. Background Art

[0002] In the fields of radar, electronic countermeasures, etc., the received RF signal must first be down-converted to an intermediate frequency signal, converted into a digital signal through AD sampling for processing, and finally the processed digital signal must be up-converted to a specific frequency point for transmission.

[0003] The existing instantaneous bandwidth is 1 GHz, which is relatively small and needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide an 18-40G transceiver module with 2G instantaneous bandwidth to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A 18-40G transceiver module with 2G instantaneous bandwidth, comprising:

[0007] The down-conversion link is used to receive the input 18-40GHz signal, and after mixing with the frequency-hopping local oscillator signal 18-34GHz and the fixed local oscillator signal 9.4GHz, it is converted into a 0.4-2.4GHz signal and output to the baseband processing unit;

[0008] The local oscillator generation link is used to generate a frequency-hopping local oscillator signal of 18-34GHz and a fixed local oscillator signal of 9.4GHz to assist the down-conversion link and the up-conversion link;

[0009] The up-conversion link is used to receive the 0.4-2.4GHz signal output by the baseband processing unit, and convert it into a 18-40GHz signal output after mixing with the fixed local oscillator signal 9.4GHz and the frequency-hopping local oscillator signal 18-34GHz in sequence;

[0010] The local oscillator generation link is connected to the down-conversion link and the up-conversion link. The down-conversion link is connected to the up-conversion link through the baseband processing unit. The links are connected through VPX connectors.

[0011] As a further solution of the present invention: the down-conversion link includes:

[0012] The signal processing module is used to process the 18-40GHz signal and divide it into two paths through the power divider, one path is output to the down-conversion mixing module, and the other path is output to the frequency testing module;

[0013] The frequency testing module is used to detect the frequency of the input signal of the signal processing module after mixing and filtering;

[0014] The down-conversion mixing module is used to output a 0.4-2.4GHz signal after amplifying, mixing, filtering, attenuating, amplifying, mixing, filtering, amplifying, and power dividing the input signal of the signal processing module;

[0015] The signal processing module is connected to the frequency testing module and the down-conversion mixing module.

[0016] As a further solution of the present invention: the signal processing module includes a limiter, a first switch, a second switch, a first amplifier, a second amplifier, a first attenuator, a third amplifier, and a first power divider. The input end of the 18-40GHz input limiter, the output end of the limiter is connected to the first end of the first switch, the second end of the first switch is connected to the first end of the second switch, the third end of the first switch is connected to the input end of the first amplifier, the output end of the first amplifier is connected to the input end of the second amplifier, the output end of the second amplifier is connected to the second end of the second switch, the third end of the second switch is connected to the input end of the first attenuator, the output end of the first attenuator is connected to the input end of the third amplifier, the output end of the third amplifier is connected to the input end of the first power divider, the first output end of the first power divider is connected to the frequency testing module, and the second output end of the first power divider is connected to the down-conversion mixing module.

[0017] As a further solution of the present invention: the frequency testing module includes a first mixer and a first filter, the input end of the first mixer is connected to the signal processing module, the output end of the first mixer is connected to the input end of the first filter, and the output end of the first filter is connected to the frequency measuring module.

[0018] As a further solution of the present invention: the down-conversion mixing module includes a fourth amplifier, a second mixer, a second filter, a second attenuator, a fifth amplifier, a third mixer, a third filter, a sixth amplifier, and a second power divider. The input end of the fourth amplifier is connected to the signal processing module, the output end of the fourth amplifier is connected to the input end of the second mixer, the output end of the second mixer is connected to the input end of the second filter, the output end of the second filter is connected to the input end of the second attenuator, the output end of the second attenuator is connected to the input end of the fifth amplifier, the output end of the fifth amplifier is connected to the input end of the third mixer, the output end of the third mixer is connected to the input end of the third filter, the output end of the third filter is connected to the input end of the sixth amplifier, the output end of the sixth amplifier is connected to the input end of the second power divider, and the output end of the second power divider outputs a 0.4-2.4GHz signal.

[0019] As a further solution of the present invention: the up-conversion link includes:

[0020] The up-conversion and mixing module is used to filter, amplify, mix, filter, amplify, attenuate, mix, and filter the input 0.4-2.4GHz signal to obtain a signal after filtering out spurious signals, and output it to the amplification and attenuation module;

[0021] The amplification and attenuation module is used to amplify and attenuate the input signal of the up-conversion and mixing module and then output an 18-40GHz signal;

[0022] The up-conversion and mixing module is connected to the amplification and attenuation module.

[0023] As a further solution of the present invention: the up-conversion mixing module includes a fourth filter, a seventh amplifier, a fourth mixer, a fifth filter, an eighth amplifier, a third attenuator, a fifth mixer, a third switch, a fourth switch, a sixth filter, a seventh filter, an eighth filter, and a ninth filter. The input end of the fourth filter introduces a 0.4-2.4 GHz signal. The output end of the fourth filter is connected to the input end of the seventh amplifier. The output end of the seventh amplifier is connected to the input end of the fourth mixer. The output end of the fourth mixer is connected to the input end of the fifth filter. The output end of the fifth filter is connected to the input end of the eighth amplifier. The output end of the eighth amplifier is connected to the third attenuator. The output end of the third attenuator is connected to the input end of the fifth mixer, the output end of the fifth mixer is connected to the first end of the third switch, the second end of the third switch is connected to the input end of the sixth filter, the third end of the third switch is connected to the input end of the seventh filter, the fourth end of the third switch is connected to the input end of the eighth filter, the fifth end of the third switch is connected to the input end of the ninth filter, the output end of the sixth filter is connected to the first end of the fourth switch, the output end of the seventh filter is connected to the second end of the fourth switch, the output end of the eighth filter is connected to the third end of the fourth switch, the output end of the ninth filter is connected to the fourth end of the fourth switch, and the fifth end of the fourth switch is connected to the amplification and attenuation module.

[0024] As a further solution of the present invention: the amplification and attenuation module includes a ninth amplifier, a fourth attenuator, a tenth amplifier, a fifth attenuator, an eleventh amplifier, a sixth attenuator, and a twelfth amplifier. The input end of the ninth amplifier is connected to the up-conversion mixing module, the output end of the ninth amplifier is connected to the input end of the fourth attenuator, the output end of the fourth attenuator is connected to the input end of the tenth amplifier, the output end of the tenth amplifier is connected to the input end of the fifth attenuator, the output end of the fifth attenuator is connected to the input end of the eleventh amplifier, the output end of the eleventh amplifier is connected to the input end of the sixth attenuator, the output end of the sixth attenuator is connected to the input end of the twelfth amplifier, and the output end of the twelfth amplifier outputs an 18-40GHz signal.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention enables AD sampling to reach an instantaneous bandwidth of 2 GHz by changing the frequency conversion method; the link is made into a single module using a VPX connector, which is convenient for overall plugging and unplugging, making the entire system modular and improving integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The schematic diagram of an 18-40G transceiver module with 2G instantaneous bandwidth.

[0027] Figure 2 Schematic diagram of the down-conversion link.

[0028] Figure 3 Schematic diagram of the up-conversion link. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] See also Figure 1 , a 18-40G transceiver module with 2G instantaneous bandwidth, comprising:

[0031] The down-conversion link is used to receive the input 18-40GHz signal, and after mixing with the frequency-hopping local oscillator signal 18-34GHz and the fixed local oscillator signal 9.4GHz, it is converted into a 0.4-2.4GHz signal and output to the baseband processing unit;

[0032] The local oscillator generation link is used to generate a frequency-hopping local oscillator signal of 18-34GHz and a fixed local oscillator signal of 9.4GHz to assist the down-conversion link and the up-conversion link;

[0033] The up-conversion link is used to receive the 0.4-2.4GHz signal output by the baseband processing unit, and convert it into a 18-40GHz signal output after mixing with the fixed local oscillator signal 9.4GHz and the frequency-hopping local oscillator signal 18-34GHz in sequence;

[0034] The local oscillator generation link is connected to the down-conversion link and the up-conversion link. The down-conversion link is connected to the up-conversion link through the baseband processing unit. The links are connected through VPX connectors.

[0035] In a specific embodiment: instantaneous bandwidth refers to the frequency range within the transmission frequency band where the signal transmission power flatness is no more than 1dB. The sampling and output frequency band of the baseband is 1.4±1GHz. Within the frequency band of 0.4-2.4GHz with a total bandwidth of 2G, the baseband can perform pulse modulation, so the instantaneous bandwidth is 2GHz. Simply put, the frequency band of the baseband AD sampling and DA output signal is 0.4-2.4GHz, and the total bandwidth of this frequency band is 2G.

[0036] In this example: See Figure 2 , the down-conversion link includes:

[0037] The signal processing module is used to process the 18-40GHz signal and divide it into two paths through the power divider, one path is output to the down-conversion mixing module, and the other path is output to the frequency testing module;

[0038] The frequency testing module is used to detect the frequency of the input signal of the signal processing module after mixing and filtering;

[0039] The down-conversion mixer module is used to output a 0.4-2.4GHz signal after amplifying, mixing, filtering, attenuating, amplifying, mixing, filtering, amplifying, and power dividing the input signal of the signal processing module;

[0040] The signal processing module is connected to the frequency testing module and the down-conversion mixing module.

[0041] In this example: See Figure 2 The signal processing module includes a limiter, a first switch, a second switch, a first amplifier, a second amplifier, a first attenuator, a third amplifier, and a first power divider. The input end of the 18-40GHz input limiter is connected, the output end of the limiter is connected to the first end of the first switch, the second end of the first switch is connected to the first end of the second switch, the third end of the first switch is connected to the input end of the first amplifier, the output end of the first amplifier is connected to the input end of the second amplifier, the output end of the second amplifier is connected to the second end of the second switch, the third end of the second switch is connected to the input end of the first attenuator, the output end of the first attenuator is connected to the input end of the third amplifier, the output end of the third amplifier is connected to the input end of the first power divider, the first output end of the first power divider is connected to the frequency testing module, and the second output end of the first power divider is connected to the down-conversion mixing module.

[0042] The 18-40GHz signal first passes through the limiter to limit the signal power to below 10dBm to prevent burning of the subsequent devices; through the first switch at the back (SPDT single-pole double-throw switch), the low-power signal goes to the amplification branch, and the power is amplified by a two-stage amplifier (the first amplifier and the second amplifier). The high-power signal goes to the straight-through branch, then passes through the second switch to the main road, passes through the first attenuator (model HGC242PD) and the third amplifier, and then is split into two signals by the first power divider.

[0043] In this example: See Figure 2 The frequency testing module includes a first mixer and a first filter. The input end of the first mixer is connected to the signal processing module, the output end of the first mixer is connected to the input end of the first filter, and the output end of the first filter is connected to the frequency measuring module.

[0044] One signal is mixed by the first mixer and then output as a 7-13 GHz RF signal, which is then sent to the frequency measurement module through the first 7-13 GHz filter to detect the frequency and reflect the signal information.

[0045] In this example: See Figure 2 The down-conversion mixing module includes a fourth amplifier, a second mixer, a second filter, a second attenuator, a fifth amplifier, a third mixer, a third filter, a sixth amplifier, and a second power divider. The input end of the fourth amplifier is connected to the signal processing module, the output end of the fourth amplifier is connected to the input end of the second mixer, the output end of the second mixer is connected to the input end of the second filter, the output end of the second filter is connected to the input end of the second attenuator, the output end of the second attenuator is connected to the input end of the fifth amplifier, the output end of the fifth amplifier is connected to the input end of the third mixer, the output end of the third mixer is connected to the input end of the third filter, the output end of the third filter is connected to the input end of the sixth amplifier, the output end of the sixth amplifier is connected to the input end of the second power divider, and the output end of the second power divider outputs a 0.4-2.4GHz signal.

[0046] The other signal passes through the fourth amplifier and is mixed with the 18-34GHz local oscillator signal at the second mixer to output an 8±1GHz intermediate frequency signal. It then passes through the second filter (7-9GHz), the second attenuator, and the fifth amplifier and is mixed with the 9.4GHz local oscillator signal at the third mixer to output a 1.4±1GHz intermediate frequency signal. It passes through the third filter (1.4±1GHz), the sixth amplifier, and the second power divider and then goes to the SDLV detector to measure power. The other 0.4-2.4GHz signal is sampled by the baseband processing unit.

[0047] In this example: See Figure 3 , the up-conversion link includes:

[0048] The up-conversion and mixing module is used to filter, amplify, mix, filter, amplify, attenuate, mix, and filter the input 0.4-2.4GHz signal to obtain a signal after filtering out spurious signals, and output it to the amplification and attenuation module;

[0049] The amplification and attenuation module is used to amplify and attenuate the input signal of the up-conversion and mixing module and then output an 18-40GHz signal;

[0050] The up-conversion and mixing module is connected to the amplification and attenuation module.

[0051] In this example: See Figure 3 The up-conversion mixing module includes a fourth filter, a seventh amplifier, a fourth mixer, a fifth filter, an eighth amplifier, a third attenuator, a fifth mixer, a third switch, a fourth switch, a sixth filter, a seventh filter, an eighth filter, and a ninth filter. The input end of the fourth filter introduces a 0.4-2.4 GHz signal. The output end of the fourth filter is connected to the input end of the seventh amplifier. The output end of the seventh amplifier is connected to the input end of the fourth mixer. The output end of the fourth mixer is connected to the input end of the fifth filter. The output end of the fifth filter is connected to the input end of the eighth amplifier. The output end of the eighth amplifier is connected to the input end of the third attenuator. The output ends of the three attenuators are connected to the input ends of the fifth mixer, the output ends of the fifth mixer are connected to the first end of the third switch, the second end of the third switch is connected to the input end of the sixth filter, the third end of the third switch is connected to the input end of the seventh filter, the fourth end of the third switch is connected to the input end of the eighth filter, the fifth end of the third switch is connected to the input end of the ninth filter, the output end of the sixth filter is connected to the first end of the fourth switch, the output end of the seventh filter is connected to the second end of the fourth switch, the output end of the eighth filter is connected to the third end of the fourth switch, the output end of the ninth filter is connected to the fourth end of the fourth switch, and the fifth end of the fourth switch is connected to the amplification and attenuation module.

[0052] The baseband processing unit generates a 0.4-2.4GHz signal, which is mixed with a 9.4GHz local oscillator signal at the fourth mixer after passing through the fourth filter and the seventh amplifier, and outputs an 8±1GHz RF signal. After passing through the fifth filter (7-9GHz), the eighth amplifier, and the third attenuator, it is mixed with a local oscillator 18-34GHz signal at the fifth mixer, and outputs an 18-40GHz signal. The output 18-40GHz signal needs to pass through a switch filter group consisting of two SP4T single-pole four-throw switches (the third switch and the fourth switch) and four cavity filters (the sixth filter, the seventh filter, the eighth filter, and the ninth filter) to obtain a signal after filtering out spurious signals.

[0053] The table of the second mixing in the up-conversion mixer module, that is, mixing with the local oscillator 18-34GHz signal, is shown below;

[0054] Serial number IF input frequency LO input frequency RF output frequency 1 8GHz 26GHz-30GHz 18GHz-22GHz 2 8GHz 30GHz-34GHz 22GHz-26GHz 3 8GHz 18GHz-25GHz 26GHz-33GHz 4 8GHz 25GHz-32GHz 33GHz-40GHz

[0055] In this example: See Figure 3 The amplification and attenuation module includes a ninth amplifier, a fourth attenuator, a tenth amplifier, a fifth attenuator, an eleventh amplifier, a sixth attenuator, and a twelfth amplifier. The input end of the ninth amplifier is connected to the up-conversion mixing module, the output end of the ninth amplifier is connected to the input end of the fourth attenuator, the output end of the fourth attenuator is connected to the input end of the tenth amplifier, the output end of the tenth amplifier is connected to the input end of the fifth attenuator, the output end of the fifth attenuator is connected to the input end of the eleventh amplifier, the output end of the eleventh amplifier is connected to the input end of the sixth attenuator, the output end of the sixth attenuator is connected to the input end of the twelfth amplifier, and the output end of the twelfth amplifier outputs an 18-40GHz signal.

[0056] Finally, after passing through 4 amplifiers and 3 attenuators (the ninth amplifier, the fourth attenuator, the tenth amplifier, the fifth attenuator, the eleventh amplifier, the sixth attenuator, and the twelfth amplifier), the amplification and attenuation path in which the amplifiers and attenuators are arranged alternately makes the signal have a dynamic range of 90dB and an output power greater than 10dBm, and outputs a signal of 18-40GHz.

[0057] The working principle of the present invention is as follows: the down-conversion link is used to receive the input 18-40GHz signal, which is mixed with the frequency-hopping local oscillator signal 18-34GHz and the fixed local oscillator signal 9.4GHz in sequence, and then converted into a 0.4-2.4GHz signal and output to the baseband processing unit; the local oscillator generation link is used to generate the frequency-hopping local oscillator signal 18-34GHz and the fixed local oscillator signal 9.4GHz to assist the down-conversion link and the up-conversion link in working; the up-conversion link is used to receive the 0.4-2.4GHz signal output by the baseband processing unit, which is mixed with the fixed local oscillator signal 9.4GHz and the frequency-hopping local oscillator signal 18-34GHz in sequence, and then converted into a 18-40GHz signal for output.

[0058] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A 18-40G transceiver module with 2G instantaneous bandwidth, characterized in that: The 2G instantaneous bandwidth 18-40G transceiver module includes: The down-conversion link is used to receive the input 18-40GHz signal, and after mixing with the frequency-hopping local oscillator signal 18-34GHz and the fixed local oscillator signal 9.4GHz, it is converted into a 0.4-2.4GHz signal and output to the baseband processing unit; The local oscillator generation link is used to generate a frequency-hopping local oscillator signal of 18-34GHz and a fixed local oscillator signal of 9.4GHz to assist the down-conversion link and the up-conversion link; The up-conversion link is used to receive the 0.4-2.4GHz signal output by the baseband processing unit, and convert it into a 18-40GHz signal output after mixing with the fixed local oscillator signal 9.4GHz and the frequency-hopping local oscillator signal 18-34GHz in sequence; The local oscillator generation link is connected to the down-conversion link and the up-conversion link. The down-conversion link is connected to the up-conversion link through the baseband processing unit. The links are connected through VPX connectors.

2. The 18-40G transceiver module with 2G instantaneous bandwidth according to claim 1, characterized in that: The down-conversion chain includes: The signal processing module is used to process the 18-40GHz signal and divide it into two paths through the power divider, one path is output to the down-conversion mixing module, and the other path is output to the frequency testing module; The frequency testing module is used to detect the frequency of the input signal of the signal processing module after mixing and filtering; The down-conversion mixer module is used to output a 0.4-2.4GHz signal after amplifying, mixing, filtering, attenuating, amplifying, mixing, filtering, amplifying, and power dividing the input signal of the signal processing module; The signal processing module is connected to the frequency testing module and the down-conversion mixing module.

3. The 18-40G transceiver module with 2G instantaneous bandwidth according to claim 2, characterized in that: The signal processing module includes a limiter, a first switch, a second switch, a first amplifier, a second amplifier, a first attenuator, a third amplifier, and a first power divider. The input end of the 18-40GHz input limiter, the output end of the limiter is connected to the first end of the first switch, the second end of the first switch is connected to the first end of the second switch, the third end of the first switch is connected to the input end of the first amplifier, the output end of the first amplifier is connected to the input end of the second amplifier, the output end of the second amplifier is connected to the second end of the second switch, the third end of the second switch is connected to the input end of the first attenuator, the output end of the first attenuator is connected to the input end of the third amplifier, the output end of the third amplifier is connected to the input end of the first power divider, the first output end of the first power divider is connected to the frequency testing module, and the second output end of the first power divider is connected to the down-conversion mixing module.

4. The 18-40G transceiver module with 2G instantaneous bandwidth according to claim 2, characterized in that: The frequency testing module comprises a first mixer and a first filter. The input end of the first mixer is connected to the signal processing module, the output end of the first mixer is connected to the input end of the first filter, and the output end of the first filter is connected to the frequency measuring module.

5. The 18-40G transceiver module with 2G instantaneous bandwidth according to claim 2, characterized in that: The down-conversion mixing module includes a fourth amplifier, a second mixer, a second filter, a second attenuator, a fifth amplifier, a third mixer, a third filter, a sixth amplifier, and a second power divider. The input end of the fourth amplifier is connected to the signal processing module, the output end of the fourth amplifier is connected to the input end of the second mixer, the output end of the second mixer is connected to the input end of the second filter, the output end of the second filter is connected to the input end of the second attenuator, the output end of the second attenuator is connected to the input end of the fifth amplifier, the output end of the fifth amplifier is connected to the input end of the third mixer, the output end of the third mixer is connected to the input end of the third filter, the output end of the third filter is connected to the input end of the sixth amplifier, the output end of the sixth amplifier is connected to the input end of the second power divider, and the output end of the second power divider outputs a 0.4-2.4GHz signal.

6. The 18-40G transceiver module with 2G instantaneous bandwidth according to any one of claims 1 to 5, characterized in that: The up-conversion link includes: The up-conversion and mixing module is used to filter, amplify, mix, filter, amplify, attenuate, mix, and filter the input 0.4-2.4GHz signal to obtain a signal after filtering out spurious signals, and output it to the amplification and attenuation module; The amplification and attenuation module is used to amplify and attenuate the input signal of the up-conversion and mixing module and then output an 18-40GHz signal; The up-conversion and mixing module is connected to the amplification and attenuation module.

7. The 18-40G transceiver module with 2G instantaneous bandwidth according to claim 6, characterized in that: The up-conversion mixing module includes a fourth filter, a seventh amplifier, a fourth mixer, a fifth filter, an eighth amplifier, a third attenuator, a fifth mixer, a third switch, a fourth switch, a sixth filter, a seventh filter, an eighth filter, and a ninth filter. The input end of the fourth filter introduces a 0.4-2.4 GHz signal. The output end of the fourth filter is connected to the input end of the seventh amplifier. The output end of the seventh amplifier is connected to the input end of the fourth mixer. The output end of the fourth mixer is connected to the input end of the fifth filter. The output end of the fifth filter is connected to the input end of the eighth amplifier. The output end of the eighth amplifier is connected to the input end of the third attenuator. The third The output end of the attenuator is connected to the input end of the fifth mixer, the output end of the fifth mixer is connected to the first end of the third switch, the second end of the third switch is connected to the input end of the sixth filter, the third end of the third switch is connected to the input end of the seventh filter, the fourth end of the third switch is connected to the input end of the eighth filter, the fifth end of the third switch is connected to the input end of the ninth filter, the output end of the sixth filter is connected to the first end of the fourth switch, the output end of the seventh filter is connected to the second end of the fourth switch, the output end of the eighth filter is connected to the third end of the fourth switch, the output end of the ninth filter is connected to the fourth end of the fourth switch, and the fifth end of the fourth switch is connected to the amplification and attenuation module.

8. The 18-40G transceiver module with 2G instantaneous bandwidth according to claim 6, characterized in that: The amplification and attenuation module includes a ninth amplifier, a fourth attenuator, a tenth amplifier, a fifth attenuator, an eleventh amplifier, a sixth attenuator, and a twelfth amplifier. The input end of the ninth amplifier is connected to the up-conversion mixing module, the output end of the ninth amplifier is connected to the input end of the fourth attenuator, the output end of the fourth attenuator is connected to the input end of the tenth amplifier, the output end of the tenth amplifier is connected to the input end of the fifth attenuator, the output end of the fifth attenuator is connected to the input end of the eleventh amplifier, the output end of the eleventh amplifier is connected to the input end of the sixth attenuator, the output end of the sixth attenuator is connected to the input end of the twelfth amplifier, and the output end of the twelfth amplifier outputs an 18-40GHz signal.

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