2-18G transceiver module with 2G instantaneous bandwidth

Abstract

The invention discloses a 2-18G transceiver module with a 2G instantaneous bandwidth, and relates to the field of signal processing, and the 2-18G transceiver module with the 2G instantaneous bandwidth comprises a down-conversion link which is used for receiving an input 2-18GHz signal, converting the input 2-18GHz signal into a 0.4-2.4 GHz signal after the input 2-18GHz signal is mixed by a frequency hopping local oscillator signal 24-40GHz and a fixed local oscillator signal 20.6 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 24-40GHz and a fixed local oscillation signal 20.6 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, in particular to a 2G instantaneous bandwidth 2-18G transceiver module. 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 a 2-18G 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 2G instantaneous bandwidth 2-18G transceiver module, comprising:

[0007] The down-conversion link is used to receive the input 2-18GHz signal, and after mixing with the frequency-hopping local oscillator signal 24-40GHz and the fixed local oscillator signal 20.6GHz, 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 24-40 GHz and a fixed local oscillator signal of 20.6 GHz, and 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 2-18GHz signal output after mixing with the fixed local oscillator signal 20.6GHz and the frequency-hopping local oscillator signal 24-40GHz 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 downlink mixing module is used to mix the input 2-18GHz signal with the frequency-hopping local oscillator signal 24-40GHz, filter, attenuate, amplify, mix with the fixed local oscillator signal 20.6GHz, and then output it to the filtering and amplification module;

[0013] The filtering and amplifying module is used to receive the output signal of the downlink mixing module, filter, amplify and power divide it, and then output a 0.4-2.4GHz signal;

[0014] The downlink mixing module is connected to the filtering and amplifying module.

[0015] As a further solution of the present invention: the downlink mixing module includes a first amplifier, a first mixer, a first filter, a first attenuator, a second amplifier, and a second mixer. The input end of the first amplifier introduces a 2-18 GHz signal, the output end of the first amplifier is connected to the input end of the first mixer, the output end of the first mixer is connected to the input end of the first filter, the output end of the first filter 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 second amplifier, the output end of the second amplifier is connected to the input end of the second mixer, and the output end of the second mixer is connected to the filtering and amplifying module.

[0016] As a further solution of the present invention: the filtering and amplifying module includes a second filter, a third amplifier, and a first power divider. The input end of the second filter is connected to the downlink mixing module, the output end of the second filter 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, and the output end of the first power divider outputs a 0.4-2.4GHz signal.

[0017] As a further solution of the present invention: the up-conversion link includes:

[0018] The uplink mixing module is used to filter, amplify, mix with the fixed local oscillator signal 20.6GHz, filter, amplify, attenuate, mix with the frequency hopping local oscillator signal 24-40GHz, filter, and then output the input 0.4-2.4GHz signal to the amplification and attenuation module;

[0019] An amplification and attenuation module is used to amplify, attenuate, amplify, attenuate, amplify, attenuate, and amplify the signal input by the uplink mixing module, and then output a 2-18GHz signal;

[0020] The uplink mixing module is connected to the amplifying and attenuating module.

[0021] As a further solution of the present invention: the uplink mixing module includes a third filter, a fourth amplifier, a third mixer, a fourth filter, a fifth amplifier, a second attenuator, a fourth mixer, and a fifth filter. The input end of the third filter introduces a 0.4-2.4GHz signal, the output end of the third filter is connected to the input end of the fourth amplifier, the output end of the fourth 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 fourth filter, the output end of the fourth filter 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 second attenuator, the output end of the second attenuator 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, and the output end of the fifth filter is connected to the amplification and attenuation module.

[0022] As a further solution of the present invention: the amplification and attenuation module includes a sixth amplifier, a third attenuator, a seventh amplifier, a fourth attenuator, an eighth amplifier, a fifth attenuator, and a ninth amplifier. The input end of the sixth amplifier is connected to the uplink mixing module, the output end of the sixth amplifier is connected to the input end of the third attenuator, the output end of the third attenuator 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 attenuator, the output end of the fourth attenuator 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 fifth attenuator, the output end of the fifth attenuator is connected to the input end of the ninth amplifier, and the output end of the ninth amplifier outputs a 2-18 GHz signal.

[0023] 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

[0024] Figure 1 The schematic diagram of a 2-18G transceiver module with 2G instantaneous bandwidth.

[0025] Figure 2 Schematic diagram of the down-conversion link.

[0026] Figure 3 Schematic diagram of the up-conversion link. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1 , a 2G instantaneous bandwidth 2-18G transceiver module, comprising:

[0029] The down-conversion link is used to receive the input 2-18GHz signal, and after mixing with the frequency-hopping local oscillator signal 24-40GHz and the fixed local oscillator signal 20.6GHz, it is converted into a 0.4-2.4GHz signal and output to the baseband processing unit;

[0030] The local oscillator generation link is used to generate a frequency-hopping local oscillator signal of 24-40 GHz and a fixed local oscillator signal of 20.6 GHz, and assist the down-conversion link and the up-conversion link;

[0031] 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 2-18GHz signal output after mixing with the fixed local oscillator signal 20.6GHz and the frequency-hopping local oscillator signal 24-40GHz in sequence;

[0032] 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.

[0033] 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.

[0034] In this example: See Figure 2 , the down-conversion link includes:

[0035] The downlink mixing module is used to mix the input 2-18GHz signal with the frequency-hopping local oscillator signal 24-40GHz, filter, attenuate, amplify, mix with the fixed local oscillator signal 20.6GHz, and then output it to the filtering and amplification module;

[0036] The filtering and amplifying module is used to receive the output signal of the downlink mixing module, filter, amplify and power divide it, and then output a 0.4-2.4GHz signal;

[0037] The downlink mixing module is connected to the filtering and amplifying module.

[0038] In this example: See Figure 2The downlink mixing module includes a first amplifier, a first mixer, a first filter, a first attenuator, a second amplifier, and a second mixer. The input end of the first amplifier introduces a 2-18 GHz signal, the output end of the first amplifier is connected to the input end of the first mixer, the output end of the first mixer is connected to the input end of the first filter, the output end of the first filter 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 second amplifier, the output end of the second amplifier is connected to the input end of the second mixer, and the output end of the second mixer is connected to the filtering and amplifying module.

[0039] The 2-18GHz signal, after passing through the first amplifier, is mixed with the 24-40GHz local oscillator signal at the first mixer to output a 22±1GHz RF signal. After passing through the first filter (21-23GHz), it passes through the first attenuator and the second amplifier and is mixed with the 20.6GHz local oscillator signal at the second mixer to output a 1.4±1GHz RF signal.

[0040] In this example: See Figure 2 The filtering and amplifying module includes a second filter, a third amplifier, and a first power divider. The input end of the second filter is connected to the downlink mixing module, the output end of the second filter 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, and the output end of the first power divider outputs a 0.4-2.4GHz signal.

[0041] The signal passes through the second 0.4-2.4GHz filter to filter out high-frequency components, and after passing through the third amplifier, it is divided into two paths through the first power divider, one of which goes to the SDLVA detector to detect signal power, and the other is sent to the AD module of the baseband processing unit for sampling.

[0042] In this example: See Figure 3 , the up-conversion link includes:

[0043] The uplink mixing module is used to filter, amplify, mix with the fixed local oscillator signal 20.6GHz, filter, amplify, attenuate, mix with the frequency hopping local oscillator signal 24-40GHz, filter, and then output the input 0.4-2.4GHz signal to the amplification and attenuation module;

[0044] An amplification and attenuation module is used to amplify, attenuate, amplify, attenuate, amplify, attenuate, and amplify the signal input by the uplink mixing module, and then output a 2-18GHz signal;

[0045] The uplink mixing module is connected to the amplifying and attenuating module.

[0046] In this example: See Figure 3The uplink mixing module includes a third filter, a fourth amplifier, a third mixer, a fourth filter, a fifth amplifier, a second attenuator, a fourth mixer, and a fifth filter. The input end of the third filter introduces a 0.4-2.4GHz signal, the output end of the third filter is connected to the input end of the fourth amplifier, the output end of the fourth 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 fourth filter, the output end of the fourth filter 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 second attenuator, the output end of the second attenuator 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, and the output end of the fifth filter is connected to the amplification and attenuation module.

[0047] The intermediate frequency signal of 0.4-2.4GHz is input, passes through the third filter and the fourth amplifier, and is mixed with the local oscillator signal of 20.6GHz at the third mixer to generate a 22±1GHz signal. After passing through the fourth filter of 21-23GHz, it passes through the fifth amplifier and the second attenuator, and is mixed with the local oscillator signal of 24-40GHz at the fourth mixer to output a RF signal of 2-18GHz, which is then processed by the fifth filter and output to the amplification and attenuation module.

[0048] In this example: See Figure 3 The amplification and attenuation module includes a sixth amplifier, a third attenuator, a seventh amplifier, a fourth attenuator, an eighth amplifier, a fifth attenuator, and a ninth amplifier. The input end of the sixth amplifier is connected to the uplink mixing module, the output end of the sixth amplifier is connected to the input end of the third attenuator, the output end of the third attenuator 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 attenuator, the output end of the fourth attenuator 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 fifth attenuator, the output end of the fifth attenuator is connected to the input end of the ninth amplifier, and the output end of the ninth amplifier outputs a 2-18 GHz signal.

[0049] The signal finally passes through 4 amplifiers and 3 attenuators (the sixth amplifier, the third attenuator, the seventh amplifier, the fourth attenuator, the eighth amplifier, the fifth attenuator, and the ninth amplifier). The amplification and attenuation path in which the amplifiers and attenuators are alternately arranged makes the signal have a dynamic range of 90dB and an output power greater than 10dBm, outputting a 2-18GHz signal.

[0050] The working principle of the present invention is as follows: the down-conversion link is used to receive the input 2-18GHz signal, which is mixed with the frequency-hopping local oscillator signal 24-40GHz and the fixed local oscillator signal 20.6GHz 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 24-40GHz and the fixed local oscillator signal 20.6GHz 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 20.6GHz and the frequency-hopping local oscillator signal 24-40GHz in sequence, and then converted into a 2-18GHz signal for output.

[0051] 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.

[0052] 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 2-18G transceiver module with 2G instantaneous bandwidth, characterized in that: The 2G instantaneous bandwidth 2-18G transceiver module includes: The down-conversion link is used to receive the input 2-18GHz signal, and after mixing with the frequency-hopping local oscillator signal 24-40GHz and the fixed local oscillator signal 20.6GHz, 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 24-40 GHz and a fixed local oscillator signal of 20.6 GHz, and 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 2-18GHz signal output after mixing with the fixed local oscillator signal 20.6GHz and the frequency-hopping local oscillator signal 24-40GHz 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 2-18G transceiver module with 2G instantaneous bandwidth according to claim 1, characterized in that: The down-conversion chain includes: The downlink mixing module is used to mix the input 2-18GHz signal with the frequency-hopping local oscillator signal 24-40GHz, filter, attenuate, amplify, mix with the fixed local oscillator signal 20.6GHz, and then output it to the filtering and amplification module; The filtering and amplifying module is used to receive the output signal of the downlink mixing module, filter, amplify and power divide it, and then output a 0.4-2.4GHz signal; The downlink mixing module is connected to the filtering and amplifying module.

3. The 2-18G transceiver module with 2G instantaneous bandwidth according to claim 2, characterized in that: The downlink mixing module includes a first amplifier, a first mixer, a first filter, a first attenuator, a second amplifier, and a second mixer. The input end of the first amplifier introduces a 2-18 GHz signal, the output end of the first amplifier is connected to the input end of the first mixer, the output end of the first mixer is connected to the input end of the first filter, the output end of the first filter 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 second amplifier, the output end of the second amplifier is connected to the input end of the second mixer, and the output end of the second mixer is connected to the filtering and amplifying module.

4. The 2-18G transceiver module with 2G instantaneous bandwidth according to claim 2, characterized in that: The filtering and amplifying module includes a second filter, a third amplifier, and a first power divider. The input end of the second filter is connected to the downlink mixing module, the output end of the second filter 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, and the output end of the first power divider outputs a 0.4-2.4GHz signal.

5. The 2-18G transceiver module with 2G instantaneous bandwidth according to any one of claims 1 to 4, characterized in that: The up-conversion link includes: The uplink mixing module is used to filter, amplify, mix with the fixed local oscillator signal 20.6GHz, filter, amplify, attenuate, mix with the frequency hopping local oscillator signal 24-40GHz, filter, and then output the input 0.4-2.4GHz signal to the amplification and attenuation module; An amplification and attenuation module is used to amplify, attenuate, amplify, attenuate, amplify, attenuate, and amplify the signal input by the uplink mixing module, and then output a 2-18GHz signal; The uplink mixing module is connected to the amplifying and attenuating module.

6. The 2-18G transceiver module with 2G instantaneous bandwidth according to claim 5, characterized in that: The uplink mixing module includes a third filter, a fourth amplifier, a third mixer, a fourth filter, a fifth amplifier, a second attenuator, a fourth mixer, and a fifth filter. The input end of the third filter introduces a 0.4-2.4GHz signal, the output end of the third filter is connected to the input end of the fourth amplifier, the output end of the fourth 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 fourth filter, the output end of the fourth filter 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 second attenuator, the output end of the second attenuator 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, and the output end of the fifth filter is connected to the amplification and attenuation module.

7. The 2-18G transceiver module with 2G instantaneous bandwidth according to claim 5, characterized in that: The amplification and attenuation module includes a sixth amplifier, a third attenuator, a seventh amplifier, a fourth attenuator, an eighth amplifier, a fifth attenuator, and a ninth amplifier. The input end of the sixth amplifier is connected to the uplink mixing module, the output end of the sixth amplifier is connected to the input end of the third attenuator, the output end of the third attenuator 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 attenuator, the output end of the fourth attenuator 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 fifth attenuator, the output end of the fifth attenuator is connected to the input end of the ninth amplifier, and the output end of the ninth amplifier outputs a 2-18 GHz signal.

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