CN214591434U - Receiving and transmitting frequency conversion device based on high isolation - Google Patents
Receiving and transmitting frequency conversion device based on high isolation Download PDFInfo
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- CN214591434U CN214591434U CN202122297936.3U CN202122297936U CN214591434U CN 214591434 U CN214591434 U CN 214591434U CN 202122297936 U CN202122297936 U CN 202122297936U CN 214591434 U CN214591434 U CN 214591434U
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Abstract
The utility model relates to a receiving and dispatching frequency conversion device based on high isolation, which relates to the radar field and comprises a frequency source module, a high isolation receiving and dispatching frequency conversion module and an FPGA signal processing module; the frequency source module comprises two signal output branches, wherein the first branch outputs a coherent reference clock signal with a first frequency, the second branch is divided into two sub-branches again, the first sub-branch outputs reference clock signals with a second frequency and a third frequency, and the second sub-branch outputs a frequency hopping local oscillator signal and an intermediate frequency local oscillator signal to the high-isolation transceiving frequency conversion module; and the signal output end of the high-isolation transceiving frequency conversion module is connected with the input end of the FPGA signal processing module and the array antenna. The utility model discloses a switch module network realizes high passageway isolation and contains the multiple mode switching including receiving and dispatching mode, calibration mode etc..
Description
Technical Field
The utility model relates to a radar technology field especially relates to a receiving and dispatching frequency conversion device based on high isolation.
Background
With the deepening of weapon research technology and the rapid development of manufacturing industry, the informatization degree of modern equipment is higher and higher, so that the development of phased array radar is very important in all countries in the world. The most important basic unit modules in the phased array radar are a T/R component and a reference source module, and the module has the advantages of multi-channel receiving, high isolation, multiple working modes, large frequency hopping bandwidth, frequency agility, large dynamic range, high spurious suppression capability and the like. Therefore, how to ensure high isolation of the system and realize multi-channel input and output of the system under the condition of realizing multi-channel transceiving function is a problem to be considered at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a receiving and dispatching frequency conversion equipment based on high isolation, solved the not enough of prior art existence.
The purpose of the utility model is realized through the following technical scheme: a high-isolation-based transceiving frequency conversion device comprises a frequency source module, a high-isolation transceiving frequency conversion module and an FPGA signal processing module; the frequency source module comprises two signal output branches, wherein the first branch outputs a coherent reference clock signal with a first frequency, the second branch is divided into two sub-branches again, the first sub-branch outputs reference clock signals with a second frequency and a third frequency, and the second sub-branch outputs a frequency hopping local oscillator signal and an intermediate frequency local oscillator signal to the high-isolation transceiving frequency conversion module; and the signal output end of the high-isolation transceiving frequency conversion module is respectively connected with the input end of the FPGA signal processing module and the array antenna.
The high-isolation transceiving frequency conversion module comprises an up-conversion transmitting channel, a down-conversion receiving channel, a switch switching matrix network, a first power divider and a second power divider; the frequency hopping local oscillator signal output by the second sub-branch is input to the input end of the second power divider, and the output intermediate frequency local oscillator signal is input to the input end of the first power divider; the output ends of the first power divider and the second power divider are respectively connected with the up-conversion transmitting channel and the down-conversion receiving channel; the signal output end of the up-conversion transmitting channel is connected with the signal input end of the switch switching matrix network, the signal output end of the switch switching matrix network is connected with the signal input end of the down-conversion receiving channel, and the switch switching matrix network is connected with the array antenna.
The up-conversion transmitting channel comprises a transmitting intermediate frequency filter, a first transmitting amplifier, a transmitting temperature compensation attenuator, a first mixer, a filter, a second transmitting amplifier, a second mixer, a broadband filter, an amplifier, a transmitting switch and a driving amplifier which are connected in sequence; the intermediate-frequency local oscillator signal is input into the first power divider, one output end of the first power divider inputs the intermediate-frequency local oscillator signal into the first frequency mixer through the first local oscillator switch for frequency mixing, the frequency hopping local oscillator signal is input into the second power divider, and one output end of the second power divider inputs the frequency hopping local oscillator signal into the second frequency mixer through the second local oscillator switch for frequency mixing.
The switch switching matrix network comprises a two-stage power division structure consisting of a plurality of Wilkinson power dividers and four signal transceiving channels; the two-stage power division structure is connected with four signal transceiving channels, and the four signal transceiving channels are connected with the array antenna.
The two-stage power division structure comprises a first Wilkinson power divider, a second Wilkinson power divider and a third Wilkinson power divider; the signal output end of the up-conversion transmitting channel is connected with the input end of the first Wilkinson power divider, and the output end of the first Wilkinson power divider is connected with the input ends of the second Wilkinson power divider and the third Wilkinson power divider to form a two-stage power dividing structure; the second Wilkinson power divider is connected with two signal transceiving channels, and the output end of the third Wilkinson power divider is connected with two signal transceiving channels.
Each signal transceiving channel in the four signal transceiving channels comprises a first single-pole double-throw switch, a second single-pole double-throw switch, a third single-pole double-throw switch and a fourth single-pole double-throw switch; one output end of the first single-pole double-throw switch is connected with the third single-pole double-throw switch after being sequentially connected with the two amplifiers and the single-pole single-throw switch, and the other output end of the first single-pole double-throw switch is connected with the fourth single-pole double-throw switch after being connected with the numerical control attenuator; the third single-pole double-throw switch is connected with the transceiving channel, and one output end of the third single-pole double-throw switch is connected with the second single-pole double-throw switch through a low-noise amplifier; the fourth single-pole double-throw switch is connected with the calibration channel, and one output end of the fourth single-pole double-throw switch is connected with the second single-pole double-throw switch through the calibration amplifier; the second single-pole double-throw switch is connected with the down-conversion receiving channel through a receiving channel; when the power divider is in a transmitting channel mode, the first single-pole double-throw switch receives the same-phase transmitting signal output by the two stages of Wilkinson power dividers and outputs the signal through the third single-pole double-throw switch; when the receiving channel mode is adopted, the third single-pole double-throw switch receives signals and sends the received signals to the down-conversion receiving channel through the second single-pole double-throw switch.
The down-conversion receiving channel comprises a plurality of receiving links, and each receiving link comprises an amplitude limiter, an STC, a low-noise amplifier, a band-pass filter, a third mixer, an MGC, a medium-frequency mixer, a temperature-compensated attenuator, a medium-frequency amplifier, a phase modulator and a medium-frequency filter which are connected in sequence; the second power divider divides the frequency hopping local oscillator signals into multiple paths of frequency hopping local oscillator signals, and each path of frequency hopping local oscillator signal is input into a third mixer in each path of receiving link; the first power divider divides the intermediate-frequency local oscillator signals into multiple paths of intermediate-frequency local oscillator signals, and each path of intermediate-frequency local oscillator signal is input into an intermediate-frequency mixer of each receiving link.
The utility model has the advantages of it is following: a receiving and transmitting frequency conversion device based on high isolation controls a module through a Field Programmable Gate Array (FPGA), and a plurality of filters are arranged inside the module to effectively suppress stray waves and harmonic waves. The module is internally provided with a constant temperature crystal oscillator, and can also be externally input with a reference clock to generate a reference signal, and the fine step frequency hopping signal output is realized through a direct digital frequency synthesizer (DDS), wherein the frequency hopping time is within 1 us. The switching component network is adopted to realize high channel isolation and switching of multiple working modes including a receiving and transmitting working mode, a calibration mode and the like. Meanwhile, the device also has the functions of Sensitivity Time Control (STC) and Manual Gain Control (MGC), and can realize the processing and receiving of echo signals in a large dynamic range under the condition of ensuring high isolation and multi-mode working.
Drawings
Fig. 1 is a schematic structural view of the present invention connected to an array antenna;
fig. 2 is a schematic structural diagram of the frequency source module of the present invention;
fig. 3 is a schematic structural diagram of the high-isolation transceiving frequency conversion module of the present invention;
fig. 4 is a schematic structural diagram of the switching matrix network of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to a high-isolation based transmit-receive frequency conversion device, which comprises a frequency source module, a high-isolation transmit-receive frequency conversion module and an FPGA signal processing module; the frequency source module comprises two signal output branches, wherein the first branch outputs a coherent reference clock signal with a first frequency, the second branch is divided into two sub-branches again, the first sub-branch outputs reference clock signals with a second frequency and a third frequency, and the second sub-branch outputs a frequency hopping local oscillator signal and an intermediate frequency local oscillator signal to the high-isolation transceiving frequency conversion module; and the signal output end of the high-isolation transceiving frequency conversion module is respectively connected with the input end of the FPGA signal processing module and the array antenna.
As shown in fig. 2, the first branch passes through the filter 1, the amplifier 9, the filter 2 and the power divider 2 in sequence and then outputs a clock signal of 100 MHz; the second branch passes through the comb spectrum generator, the amplifier 10 and the power divider 3 in sequence, and the power divider 3 is divided into two sub-branches; the first sub-branch passes through the filter 3, the amplifier 11 and the power divider 4 in sequence, one end of the power divider 4 outputs a reference clock signal of 800MHz, and the other end of the power divider 4 is connected with the frequency divider, the filter 4 and the amplifier in sequence to output a reference clock signal of 1000 MHz; the second sub-branch outputs a frequency hopping local oscillator signal of 11 GHz-12 GHz and an intermediate frequency local oscillator signal of 2120MHz through the power divider 5; the comb spectrum generator is introduced to ensure that output signals have low stray high phase noise performance, signals generated by the comb spectrum generator select target signals through a band-pass filter, unnecessary signals are effectively inhibited, finally obtained signals are output as frequency conversion local oscillation signals, the frequency range is 11-12 GHz, and 20MHz stepping is realized.
As shown in fig. 3, the high-isolation transceiving frequency conversion module includes an up-conversion transmitting channel, a down-conversion receiving channel, a switch switching matrix network, a first power divider and a second power divider; the frequency hopping local oscillator signal output by the second sub-branch is input to the input end of the second power divider, and the output intermediate frequency local oscillator signal is input to the input end of the first power divider; the output ends of the first power divider and the second power divider are respectively connected with the up-conversion transmitting channel and the down-conversion receiving channel; the signal output end of the up-conversion transmitting channel is connected with the signal input end of the switch switching matrix network, the signal output end of the switch switching matrix network is connected with the signal input end of the down-conversion receiving channel, and the switch switching matrix network is connected with the array antenna.
Furthermore, the high-isolation transceiving frequency conversion module is used for amplifying and filtering the transmitted intermediate-frequency signal through an up-conversion transmitting channel in a transmitting channel mode, performing first frequency mixing according to the received intermediate-frequency local oscillator signal, performing second frequency mixing according to the received frequency-hopping local oscillator signal, and transmitting the signal through the transmitting mode; and when in a receiving channel mode, the down-conversion receiving channel completes twice frequency mixing on the received signal according to the received frequency hopping local oscillator signal and the received intermediate frequency local oscillator signal to obtain an intermediate frequency signal output with corresponding frequency.
The up-conversion transmitting channel comprises a transmitting intermediate frequency filter, a first transmitting amplifier, a transmitting temperature compensation attenuator, a first mixer, a filter, a second transmitting amplifier, a second mixer, a broadband filter, an amplifier, a transmitting switch and a driving amplifier which are connected in sequence; the intermediate-frequency local oscillator signal is input into the first power divider, one output end of the first power divider inputs the intermediate-frequency local oscillator signal into the first frequency mixer through the first local oscillator switch for frequency mixing, the frequency hopping local oscillator signal is input into the second power divider, and one output end of the second power divider inputs the frequency hopping local oscillator signal into the second frequency mixer through the second local oscillator switch for frequency mixing.
Further, the up-conversion transmitting channel mainly has the functions of completing the frequency conversion, amplification, filtering and switching of the working mode of the radio frequency signal. By adopting a multi-frequency conversion scheme, an intermediate frequency Linear Frequency Modulation (LFM) signal generated by the digital DDS is filtered and amplified, then is mixed with an intermediate frequency local oscillator provided by a frequency source module to an L wave band, and is mixed with a frequency hopping local oscillator signal to an X wave band for output through secondary superheterodyne frequency mixing. The local oscillator switches are added in two times, so that the requirement of high isolation is ensured, the isolation of a receiving and transmitting channel of the invention is superior to 105dBc, the local oscillator switches are switched off in a receiving state, the local oscillator signal leakage is ensured to be as small as possible, and a temperature compensation attenuator is added in the channel at the same time, so that the power fluctuation caused by temperature change is compensated.
As shown in fig. 4, the switching matrix network includes a two-stage power division structure composed of a plurality of wilkinson power dividers, and four signal transceiving channels, where the two-stage power division structure is connected with the four signal transceiving channels, and the four signal transceiving channels are connected with the array antenna.
Further, the two-stage power dividing structure comprises a first Wilkinson power divider, a second Wilkinson power divider and a third Wilkinson power divider; the signal output end of the up-conversion transmitting channel is connected with the input end of the first Wilkinson power divider, and the output end of the first Wilkinson power divider is connected with the input ends of the second Wilkinson power divider and the third Wilkinson power divider to form a two-stage power dividing structure; the second Wilkinson power divider is connected with the two signal transceiving channels, and the output end of the third Wilkinson power divider is connected with the two signal transceiving channels.
Each signal transceiving channel in the four signal transceiving channels comprises a first single-pole double-throw switch, a second single-pole double-throw switch, a third single-pole double-throw switch and a fourth single-pole double-throw switch; one output end of the first single-pole double-throw switch is connected with the third single-pole double-throw switch after being sequentially connected with the two amplifiers and the single-pole single-throw switch, and the other output end of the first single-pole double-throw switch is connected with the fourth single-pole double-throw switch after being connected with the numerical control attenuator; the third single-pole double-throw switch is connected with the transceiving channel, and one output end of the third single-pole double-throw switch is connected with the second single-pole double-throw switch through a low-noise amplifier; the fourth single-pole double-throw switch is connected with the calibration channel, and one output end of the fourth single-pole double-throw switch is connected with the second single-pole double-throw switch through the calibration amplifier; the second single-pole double-throw switch is connected with the down-conversion receiving channel through a receiving channel; when the power divider is in a transmitting channel mode, the first single-pole double-throw switch receives the same-phase transmitting signal output by the two stages of Wilkinson power dividers and outputs the signal through the third single-pole double-throw switch; when the receiving channel mode is adopted, the third single-pole double-throw switch receives signals and sends the received signals to the down-conversion receiving channel through the second single-pole double-throw switch.
A first single-pole double-throw switch, a second single-pole double-throw switch, a third single-pole double-throw switch and a fourth single-pole double-throw switch in the first path of signal transceiving channel respectively correspond to the single-pole double-throw switch 1, the single-pole double-throw switch 2, the single-pole double-throw switch 3 and the single-pole double-throw switch 4 in the figure 4; a first single-pole double-throw switch, a second single-pole double-throw switch, a third single-pole double-throw switch and a fourth single-pole double-throw switch in the second path of signal transceiving channel respectively correspond to the single-pole double-throw switch 5, the single-pole double-throw switch 6, the single-pole double-throw switch 7 and the single-pole double-throw switch 8 in the figure 4; the first single-pole double-throw switch, the second single-pole double-throw switch, the third single-pole double-throw switch and the fourth single-pole double-throw switch in the third signal transceiving channel respectively correspond to the single-pole double-throw switch 9, the single-pole double-throw switch 10, the single-pole double-throw switch 11 and the single-pole double-throw switch 12 in the figure 4; the first single-pole double-throw switch, the second single-pole double-throw switch, the third single-pole double-throw switch and the fourth single-pole double-throw switch in the fourth signal transceiving channel respectively correspond to the single-pole double-throw switch 13, the single-pole double-throw switch 14, the single-pole double-throw switch 15 and the single-pole double-throw switch 16 in the figure 4;
the transmitting signal is divided into four paths of same-phase signals through two stages of Wilkinson power dividers to be output, then a receiving and transmitting channel mode is selected through two stages of switches, and finally four paths of signals are output, and each path of transmitting signal is combined with a single-pole single-throw switch through a two-stage amplifier, so that the requirement of high isolation between channels can be met. The four paths of received signals enter a switch matrix network through a receiving and transmitting channel, then are switched to a receiving mode in a receiving and transmitting working mode through a two-stage receiving and transmitting switch, firstly, the signals enter a low noise amplifier after passing through a first-stage single-pole double-throw switch to ensure that the overall noise coefficient of the system is not too high, then pass through a second-stage single-pole double-throw switch, and finally, the signals are output from the receiving channel to a switch matrix to receive front-end signals. In the calibration mode, signals are received and transmitted through a calibration port, when the transmitted signals are output, the output power is adjusted through a numerical control attenuator to output, when the signals are received, small signals are amplified through a calibration amplifier and then output to a single-pole double-throw switch signal, and finally the signals are output through a receiving channel port.
As shown in fig. 3, the down-conversion receiving channel includes multiple receiving links, each receiving link includes a limiter, an STC, a low noise amplifier, a band pass filter, a third mixer, an MGC, an intermediate frequency mixer, a temperature compensation attenuator, an intermediate frequency amplifier, a phase modulator, and an intermediate frequency filter, which are connected in sequence; the second power divider divides the frequency hopping local oscillator signals into multiple paths of frequency hopping local oscillator signals, and each path of frequency hopping local oscillator signal is input into a third mixer in each path of receiving link; the first power divider divides the intermediate-frequency local oscillator signals into multiple paths of intermediate-frequency local oscillator signals, and each path of intermediate-frequency local oscillator signal is input into an intermediate-frequency mixer of each receiving link.
The down-conversion receiving channel firstly carries out amplitude limiting processing and STC processing on received signals, then carries out low-noise radio frequency amplification, a preselection filter is arranged after the radio frequency amplification for filtering out image frequency signals, interference signals and the like, the filtered signals and corresponding frequency hopping local oscillator signals carry out primary frequency mixing, the L-band intermediate frequency signals obtained by the frequency mixing are filtered and then enter an amplitude amplification adjusting circuit MGC. The amplitude amplification adjusting circuit completes the expansion of the dynamic range of the channel, and the dynamic range is better than 90 dBc. And finally, down-converting the L-band intermediate frequency signal to 120MHz intermediate frequency signal for output, outputting the intermediate frequency signal after filtering and power adjustment to a signal processing module, and then performing A/D sampling processing. Wherein, the receiving channel is harsh to the phase place uniformity requirement between the passageway, and in order to satisfy this requirement, the link has specially designed the phase modulation ware that corresponds and has compensated every passageway phase place, is different from the digital phase shifter, the utility model discloses a link has characteristics such as the phase modulation is nimble, the circuit is simple, low cost and have stronger practicality, makes the phase place uniformity of system be superior to 5. In addition, in order to compensate signal fluctuation in different working temperature environments, a special receiving temperature compensator is designed for the link and is used for meeting the requirement of temperature stability of equipment.
The utility model discloses the working process who carries out the calibration of passageway uniformity does: when calibration is carried out, the working mode of the equipment is set to be the calibration mode from the transceiving working mode through software commands. After the calibration mode is switched, a radio frequency signal is output from a calibration port, then the radio frequency signal is radiated to a free space through an array antenna unit, when a radiation signal detects a target, an echo signal is generated, the echo signal is received back through a calibration receiving antenna, then the echo signal is injected into a single-pole double-throw switch of a receiving and transmitting channel through a receiving and transmitting channel port, then the signal is switched to a receiving link through a switch matrix, the signal is subjected to low-noise amplification, weak echo signal is further amplified and signal-to-noise ratio is improved, then the signal is injected into the receiving channel through a second-stage single-pole double-throw switch, after the signal enters the receiving channel, the amplitude limiting processing is respectively carried out on a large signal leaked from a transmitting end through an amplitude limiter, the rear-stage device is prevented from being burnt and saturated, then the signal is subjected to dynamic adjustment through an STC circuit after amplitude limiting, and then passes through a low-noise amplification and a band-pass filter, carry out the suppression to stray signal and handle, after guaranteeing the spectral purity of incoming signal, the signal gets into first mixer, behind the first intermediate frequency signal of mixing output 2000MHz, after the signal in proper order through MGC, 120MHz intermediate frequency signal of intermediate frequency mixer output, then intermediate frequency signal carries out gain compensation to whole link at full temperature range through the temperature compensation attenuator, outgoing signal enlargies the signal through intermediate frequency amplifier, then the signal passes through the phase modulator, compensate to the phase uniformity of every channel signal, after outgoing signal passes through intermediate frequency filter, accomplish after the suppression of intermediate frequency stray and harmonic, export an intermediate frequency calibration signal. This completes the calibration of the channel.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a receiving and dispatching frequency conversion device based on high isolation which characterized in that: the system comprises a frequency source module, a high-isolation transceiving frequency conversion module and an FPGA signal processing module; the frequency source module comprises two signal output branches, wherein the first branch outputs a coherent reference clock signal with a first frequency, the second branch is divided into two sub-branches again, the first sub-branch outputs reference clock signals with a second frequency and a third frequency, and the second sub-branch outputs a frequency hopping local oscillator signal and an intermediate frequency local oscillator signal to the high-isolation transceiving frequency conversion module; and the signal output end of the high-isolation transceiving frequency conversion module is respectively connected with the input end of the FPGA signal processing module and the array antenna.
2. The high-isolation-degree-based transceiving frequency conversion device according to claim 1, wherein: the high-isolation transceiving frequency conversion module comprises an up-conversion transmitting channel, a down-conversion receiving channel, a switch switching matrix network, a first power divider and a second power divider; the frequency hopping local oscillator signal output by the second sub-branch is input to the input end of the second power divider, and the output intermediate frequency local oscillator signal is input to the input end of the first power divider; the output ends of the first power divider and the second power divider are respectively connected with the up-conversion transmitting channel and the down-conversion receiving channel; the signal output end of the up-conversion transmitting channel is connected with the signal input end of the switch switching matrix network, the signal output end of the switch switching matrix network is connected with the signal input end of the down-conversion receiving channel, and the switch switching matrix network is connected with the array antenna.
3. The high-isolation-degree-based transceiving frequency conversion device according to claim 2, wherein: the up-conversion transmitting channel comprises a transmitting intermediate frequency filter, a first transmitting amplifier, a transmitting temperature compensation attenuator, a first mixer, a filter, a second transmitting amplifier, a second mixer, a broadband filter, an amplifier, a transmitting switch and a driving amplifier which are connected in sequence; the intermediate-frequency local oscillator signal is input into the first power divider, one output end of the first power divider inputs the intermediate-frequency local oscillator signal into the first frequency mixer through the first local oscillator switch for frequency mixing, the frequency hopping local oscillator signal is input into the second power divider, and one output end of the second power divider inputs the frequency hopping local oscillator signal into the second frequency mixer through the second local oscillator switch for frequency mixing.
4. The high-isolation-degree-based transceiving frequency conversion device according to claim 2, wherein: the switch switching matrix network comprises a two-stage power division structure consisting of a plurality of Wilkinson power dividers and four signal transceiving channels; the two-stage power division structure is connected with four signal transceiving channels, and the four signal transceiving channels are connected with the array antenna.
5. The high-isolation-degree-based transceiving frequency conversion device according to claim 4, wherein: the two-stage power division structure comprises a first Wilkinson power divider, a second Wilkinson power divider and a third Wilkinson power divider; the signal output end of the up-conversion transmitting channel is connected with the input end of the first Wilkinson power divider, and the output end of the first Wilkinson power divider is connected with the input ends of the second Wilkinson power divider and the third Wilkinson power divider to form a two-stage power dividing structure; the output end of the second Wilkinson power divider is respectively connected with two signal transceiving channels, and the output end of the third Wilkinson power divider is connected with two signal transceiving channels.
6. The high-isolation-degree-based transceiving frequency conversion device according to claim 4, wherein: each signal transceiving channel in the four signal transceiving channels comprises a first single-pole double-throw switch, a second single-pole double-throw switch, a third single-pole double-throw switch and a fourth single-pole double-throw switch; one output end of the first single-pole double-throw switch is connected with the third single-pole double-throw switch after being sequentially connected with the two amplifiers and the single-pole single-throw switch, and the other output end of the first single-pole double-throw switch is connected with the fourth single-pole double-throw switch after being connected with the numerical control attenuator; the third single-pole double-throw switch is connected with the transceiving channel, and one output end of the third single-pole double-throw switch is connected with the second single-pole double-throw switch through a low-noise amplifier; the fourth single-pole double-throw switch is connected with the calibration channel, and one output end of the fourth single-pole double-throw switch is connected with the second single-pole double-throw switch through the calibration amplifier; the second single-pole double-throw switch is connected with the down-conversion receiving channel through a receiving channel; when the power divider is in a transmitting channel mode, the first single-pole double-throw switch receives the same-phase transmitting signal output by the two stages of Wilkinson power dividers and outputs the signal through the third single-pole double-throw switch; when the receiving channel mode is adopted, the third single-pole double-throw switch receives signals and sends the received signals to the down-conversion receiving channel through the second single-pole double-throw switch.
7. The high-isolation-degree-based transceiving frequency conversion device according to claim 2, wherein: the down-conversion receiving channel comprises a plurality of receiving links, and each receiving link comprises an amplitude limiter, an STC, a low-noise amplifier, a band-pass filter, a third mixer, an MGC, a medium-frequency mixer, a temperature-compensated attenuator, a medium-frequency amplifier, a phase modulator and a medium-frequency filter which are connected in sequence; the second power divider divides the frequency hopping local oscillator signals into multiple paths of frequency hopping local oscillator signals, and each path of frequency hopping local oscillator signal is input into a third mixer in each path of receiving link; the first power divider divides the intermediate-frequency local oscillator signals into multiple paths of intermediate-frequency local oscillator signals, and each path of intermediate-frequency local oscillator signal is input into an intermediate-frequency mixer of each receiving link.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114640363A (en) * | 2021-12-14 | 2022-06-17 | 北京遥感设备研究所 | Engine auxiliary spectrum data acquisition device |
| CN114966561A (en) * | 2022-07-29 | 2022-08-30 | 成都雷通科技有限公司 | Digital multi-beam phased array radar system for low-altitude warning |
| CN115065376A (en) * | 2022-07-27 | 2022-09-16 | 成都雷通科技有限公司 | Eight-channel high-power frequency conversion TR component |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114640363A (en) * | 2021-12-14 | 2022-06-17 | 北京遥感设备研究所 | Engine auxiliary spectrum data acquisition device |
| CN114640363B (en) * | 2021-12-14 | 2023-06-20 | 北京遥感设备研究所 | Auxiliary spectrum data acquisition device of engine |
| CN115065376A (en) * | 2022-07-27 | 2022-09-16 | 成都雷通科技有限公司 | Eight-channel high-power frequency conversion TR component |
| CN115065376B (en) * | 2022-07-27 | 2022-11-25 | 成都雷通科技有限公司 | Eight-channel high-power frequency conversion TR (transmitter-receiver) assembly |
| CN114966561A (en) * | 2022-07-29 | 2022-08-30 | 成都雷通科技有限公司 | Digital multi-beam phased array radar system for low-altitude warning |
| CN114966561B (en) * | 2022-07-29 | 2022-11-25 | 成都雷通科技有限公司 | Digital multi-beam phased array radar system for low-altitude warning |
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