CN215420280U - Ku-waveband multi-channel high-power TR (transmitter-receiver) assembly - Google Patents
Ku-waveband multi-channel high-power TR (transmitter-receiver) assembly Download PDFInfo
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- CN215420280U CN215420280U CN202120778876.4U CN202120778876U CN215420280U CN 215420280 U CN215420280 U CN 215420280U CN 202120778876 U CN202120778876 U CN 202120778876U CN 215420280 U CN215420280 U CN 215420280U
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Abstract
A Ku band multichannel high power TR assembly, comprising: the receiving and transmitting switch is a single-pole double-throw radio frequency switch, and two radio frequency ports are respectively connected with an external excitation signal and the input end of the frequency conversion circuit; the receiving and transmitting control circuit comprises a 1-path N-path power divider, a digital control circuit and N multifunctional receiving and transmitting control chips, wherein the common end of the 1-path N-path power divider is connected with the common end of the receiving and transmitting switch, N paths of the 1-path N-path power divider are respectively and correspondingly connected with the radio frequency signal common ends of the N multifunctional receiving and transmitting control chips, and the data output end of the digital control circuit is connected with the data input ends of the N multifunctional receiving and transmitting control chips; the transceiving circuit comprises N transceiving channels with the same structure, and each transceiving channel comprises a receiving branch and a transmitting branch.
Description
Technical Field
The utility model relates to the technical field of radio frequency transceiving, in particular to a Ku-band multi-channel high-power TR component.
Background
In recent years, with the rapid development and rapid diffusion of small and micro unmanned aerial vehicle technologies, the unmanned aerial vehicle plays an increasingly important role in various fields such as administration, fire protection, agriculture and forestry, energy geographical observation, commercial broadcasting and the like, but like many new things, the type of aircraft emerging in recent years is a double-edged sword. The aerial defense system has the advantages of low cost, simplicity in operation and control, convenience in carrying and easiness in obtaining, and one of the most important advantages is that the aerial defense system can execute a scouting task or even a destructive task in a concealed mode, cannot be found by an aerial defense radar aiming at a larger aircraft, and brings great challenges to national defense and safety. Currently, many countries are actively seeking effective solutions and developing corresponding devices to deal with the threat of small micro-unmanned aerial vehicles.
At present, a sum signal and a difference signal are mainly formed by synthesizing analog links in a TR component of a Ku waveband, the processing precision of a hardware circuit is rigorously required by the mode, and the debugging difficulty in a high-frequency band is large.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing analysis, the present invention aims to provide a Ku-band multichannel high-power TR module, so as to solve the problems that the processing accuracy of a hardware circuit is demanding and the debugging difficulty in a high frequency band is large when a sum signal and a difference signal are formed by analog link synthesis in the prior art.
The purpose of the utility model is mainly realized by the following technical scheme:
a Ku band multichannel high power TR assembly, comprising:
the receiving and transmitting switch is a single-pole double-throw radio frequency switch, and two radio frequency ports are respectively connected with an external excitation signal and the input end of the frequency conversion circuit;
the receiving and dispatching control circuit comprises a 1-branch N-path power divider, a digital control circuit and N multifunctional receiving and dispatching control chips; the public end of the 1-branch N-path power divider is connected with the public end of the transceiving switch; the N paths of the 1-path N-path power divider are respectively and correspondingly connected with the radio frequency signal public ends of the N multifunctional transceiving control chips; the data output end of the digital control circuit is connected with the data input ends of the N multifunctional transceiving control chips;
the receiving and transmitting circuit comprises N receiving and transmitting channels with the same structure; each transceiving channel comprises a receiving branch and a transmitting branch; the output end of the receiving branch is connected with the radio frequency signal input end of the multifunctional transceiving control chip; the input end of the transmitting branch is connected with the radio frequency signal output end of the multifunctional transceiving control chip; the input end of the receiving branch and the output end of the transmitting branch are connected with an antenna after being connected in a junction mode through a circulator.
The beneficial effects of the above technical scheme are: this subassembly passes through the multi-functional chip and realizes subassembly radar signal's receiving and dispatching phase place and amplitude control, has adopted the mode of digit with the simulation, forms and poor signal in the digit, is different from traditional TR subassembly adoption analog mode and forms and poor signal, and simple structure easily debugs radio frequency signal's phase place and amplitude.
Based on the further improvement of the scheme, the receiving branch comprises a low noise amplifier and a limiter, and the input end of the limiter is connected with one output end of the circulator; the output end of the amplitude limiter is connected with the input end of the low-noise amplifier; the output end of the low-noise amplifier is connected with the radio-frequency signal input end of the multifunctional transceiving control chip.
Furthermore, the receiving branch circuit further comprises a switch, and the switch is connected between the low noise amplifier and the multifunctional transceiving control chip.
The beneficial effects of the above technical scheme are: by adding a switch between the low-noise amplifier and the multifunctional transceiving control chip, transceiving isolation is increased, and channel crosstalk between components is reduced.
Furthermore, the transmitting branch comprises a two-stage GaN amplifier, and the input end of the two-stage GaN amplifier is connected with the radio-frequency signal output end of the multifunctional transceiving control chip; and the output end of the two-stage GaN amplifier is connected with one input end of the circulator.
The beneficial effects of the above technical scheme are: the high-power output requirement of the radar system is met by arranging the two stages of GaN amplifiers.
Furthermore, the transmitting branch circuit also comprises a modulation circuit, and each GaN amplifier of the transmitting branch circuit is connected with one modulation circuit; the modulation circuit comprises a driver, a first resistor, a second resistor, a third resistor, a fourth resistor and an MOS (metal oxide semiconductor) tube; a control signal input interface of the driver is connected with a pulse signal output port of the digital control circuit through a first resistor; a modulation voltage output pin of the driver is connected with a drain electrode of the MOS tube through a third resistor, and a driving current output port of the driver is connected with a grid electrode of the MOS tube through a fourth resistor; and the source electrode of the MOS tube is connected with a power supply, and the drain electrode of the MOS tube is connected with the output end of the GaN amplifier.
The beneficial effects of the above technical scheme are: and when the radar equipment works in a receiving state, a modulation circuit of the drain electrode of the amplifier cuts off the drain electrode voltage of all the amplifiers, so that the heat consumption of the equipment is greatly reduced.
The AM/TR signal is transmitted to the amplifier through the digital control circuit, so that the opening/closing function of any transmitting channel is realized, and the static power consumption of the component is greatly reduced.
Further, the frequency conversion circuit comprises a first frequency mixer, a filter, an amplifier, a second frequency mixer, an intermediate frequency amplifier and an intermediate frequency filter which are sequentially connected in series, the frequency conversion circuit further comprises a first local oscillator and a second local oscillator, the output end of the first local oscillator is connected with the input end of the first frequency mixer, and the output end of the second local oscillator is connected with the input end of the second frequency mixer.
Furthermore, the digital control circuit comprises an FPGA, a serial port chip and a temperature sensor; the temperature sensor is arranged in the cavity of the TR component, and the data output end of the temperature sensor is connected with the temperature data input end of the FPGA; the clock pin of the FPGA is connected with the clock pin of the multifunctional transceiving control chip; the data output port of the FPGA is connected with the data input ports of the N multifunctional transceiving control chips; the FPGA is connected with an upper computer through a serial port chip.
The beneficial effects of the above technical scheme are: the temperature sensor can detect the temperature information of the assembly, and the FPGA is connected with an upper computer through a serial port chip and can send temperature data to the upper computer; the upper computer can transmit phase and amplitude debugging information to the multifunctional transceiving control chip through the FPGA, so that the phase amplitude of the radio-frequency signal can be accurately debugged.
Further, the model of the multifunctional transceiving control chip is NC15334C-1418 PD.
Further, the driver is of the model JSD 3490C.
In the utility model, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a block diagram of a Ku-band multi-channel high-power TR component according to an embodiment of the utility model;
FIG. 2 is a block diagram of a transmit-receive channel implemented in accordance with the present invention;
FIG. 3 is a schematic circuit diagram of a modulation circuit according to an embodiment of the present invention;
FIG. 4 is a block diagram of a digital control circuit in accordance with an embodiment of the present invention;
FIG. 5 is a block diagram of a frequency conversion circuit embodying the present invention;
reference numerals:
1-a transmit-receive control circuit; 2-a transceiver circuit.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the utility model and together with the description, serve to explain the principles of the utility model and not to limit the scope of the utility model.
A specific embodiment of the present invention discloses a Ku-band multichannel high-power TR assembly, which, as shown in fig. 1, includes a frequency conversion circuit, a transceiver switch, a transceiver control circuit, and a transceiver circuit.
The receiving and transmitting switch is a single-pole double-throw radio frequency switch, two radio frequency ports of the receiving and transmitting switch are respectively connected with an external excitation signal and the input end of the frequency conversion circuit, and the transmitting and receiving of the radio frequency signals are realized through the switching of the receiving and transmitting switch. The frequency conversion circuit is used for converting the received signal into an intermediate frequency signal.
The receiving and transmitting control circuit comprises a 1-path N-path power divider, a digital control circuit and N multifunctional receiving and transmitting control chips; the public end of the 1-branch N-path power divider is connected with the public end of the transceiving switch; the N paths of the 1-path N-path power divider are respectively and correspondingly connected with the radio frequency signal public ends of the N multifunctional transceiving control chips; and the data output end of the digital control circuit is connected with the data input ends of the N multifunctional transceiving control chips. For example, as shown in fig. 2, the power divider may be a 1-to-8-path power divider, and each path is connected to a common end of the rf signal of the multifunctional transceiving control chip. In implementation, the multifunctional transceiving control chip adopts NC15334C-1418 PD.
The receiving and transmitting circuit comprises N receiving and transmitting channels with the same structure; each transceiving channel comprises a receiving branch and a transmitting branch; the output end of the receiving branch is connected with the radio frequency signal input end of the multifunctional transceiving control chip; the input end of the transmitting branch is connected with the radio frequency signal output end of the multifunctional transceiving control chip; the input end of the receiving branch and the output end of the transmitting branch are connected with an antenna after being connected in a junction mode through a circulator. Any one or more transmitting branches can be selected to amplify and output the radio frequency signals according to the output power requirement of the final port of the radar system.
Illustratively, the transceiver circuit includes 8 transceiver channels with the same structure, and each transceiver channel includes a transmitting branch and a receiving branch, which are the same as the number of branches of the power divider. As shown in fig. 2, each receiving branch comprises a low noise amplifier and a limiter, and an input end of the limiter is connected to an output end of the circulator; the output end of the amplitude limiter is connected with the input end of the low-noise amplifier; the output end of the low-noise amplifier is connected with the radio-frequency signal input end of the multifunctional transceiving control chip. In practice, the circulator adopts a high-power circulator. The power circulator has two main functions, and is matched with a final stage amplifying circuit of a transmitting branch circuit when the radar is in a transmitting state, so that the effect of protecting the final stage amplifying and synthesizing circuit is achieved, and an antenna interface is provided to a passage of a receiving branch circuit when the radar equipment is in a receiving state.
In order to increase the receiving-transmitting isolation and reduce the channel disturbance among the components, the receiving branch circuit further comprises a switch, and the switch is connected between the low-noise amplifier and the multifunctional receiving-transmitting control chip.
After 8 paths of weak signals are received by an antenna and enter an 8-channel TR circuit receiving branch circuit through a circulator, a subsequent circuit is protected through an amplitude limiter; then amplifying the signal to a proper level through low-noise amplification; and the signals are transmitted to a receiving frequency conversion circuit after passing through a multifunctional transceiving control chip, a synthesizer and a transceiving switch, and finally the required intermediate frequency signals are output to signal processing.
In order to meet the requirement of radar signal detection power, as shown in fig. 2, each transmitting branch comprises two GaN amplifiers connected in series in sequence, and the input end of each GaN amplifier is connected with the radio frequency signal output end of the multifunctional transceiving control chip; and the output end of the two-stage GaN amplifier is connected with one input end of the circulator.
In order to reduce the static heat consumption of the assembly, the transmitting branch also comprises a modulation circuit, and each GaN amplifier of the transmitting branch is connected with one modulation circuit. As shown in fig. 3, the modulation circuit includes a driver, a first resistor R11, a second resistor R15, a third resistor R19, a fourth resistor R17, and a MOS transistor.
Specifically, the driver model is JSD 3490C. A control signal input interface, such as an IN pin, of the driver is connected with a pulse signal output port of the digital control circuit through a first resistor R11. A modulation voltage output pin (OUT pin) of the driver is connected with the drain electrode of the MOS tube through a third resistor R19, and a driving current output port (POUT port) of the driver is connected with the grid electrode of the MOS tube through a fourth resistor R17; and the source electrode of the MOS tube is connected with a power supply, and the drain electrode of the MOS tube is connected with the output end of the GaN amplifier. When the radar equipment works in a receiving state, drain voltages of all amplifiers are turned off through the drain modulation circuit, and heat consumption of the equipment is greatly reduced.
Specifically, the digital control circuit is shown in fig. 4 and includes an FPGA, a serial chip, and a temperature sensor. The temperature sensor is disposed within the cavity of the TR assembly. The temperature sensor is used for collecting temperature data of the TR component and sending the temperature data to the FPGA, and the data output end of the temperature sensor is connected with the temperature data input end of the FPGA. The temperature data input end of the FPGA is a universal IO interface, and is used as the temperature data input end during implementation. And the clock pin of the FPGA is connected with the clock pin of the multifunctional transceiving control chip and is used for transmitting a clock signal with the multifunctional transceiving control chip. The data output port of the FPGA is connected with the data input ports of the N multifunctional transceiving control chips and is used for transmitting phase and amplitude control data to the multifunctional transceiving control chips, and the data output port of the FPGA is a universal IO interface and is used as a data output port during implementation; the FPGA is connected with an upper computer through a serial port chip, and can be connected with the upper computer through an RS485 serial port chip. The digital control circuit has the working principle that the temperature sensor sends acquired temperature data to the FPGA, the FPGA sends the temperature data to the upper computer through the serial port chip, an operator sends phase and/or amplitude adjustment information to the FPGA according to the temperature data displayed by the upper computer and the reference phase and amplitude, the FPGA sends the phase and/or amplitude adjustment information to the corresponding multifunctional transceiving control chip, and the multifunctional transceiving control chip completes the adjustment of the phase and/or amplitude according to the adjustment information.
The pulse signal output port of the FPGA is connected with the control signal input port of each modulation circuit, for example, the IN port of the JSD3490C driver, and the phase driver sends a pulse control signal to modulate the drain voltage of the GaN amplifier, so that the on/off function of any transmitting channel can be controlled, and the static power consumption of the component is greatly reduced. The pulse signal output of the FPGA is a universal IO interface, and is used as a pulse signal output port during implementation.
The digital control circuit also comprises a crystal oscillator which provides clock signals for the FPGA.
The digital control circuit also comprises a memory which is connected with the FPGA and used for storing data.
The frequency conversion circuit is shown in fig. 5, and comprises a first frequency mixer, a filter, an amplifier, a second frequency mixer, an intermediate frequency amplifier and an intermediate frequency filter which are sequentially connected in series, the frequency conversion circuit further comprises a first local oscillator and a second local oscillator, an output end of the first local oscillator is connected with an input end of the first frequency mixer, and an output end of the second local oscillator is connected with an input end of the second frequency mixer. The first local oscillator and the second local oscillator provide local oscillators for the first frequency mixer and the second frequency mixer respectively.
Compared with the prior art, the utility model has the following beneficial effects:
1. realize subassembly radar signal's receiving and dispatching phase place and amplitude control through multi-functional receiving and dispatching control chip, adopted the mode of digit with the simulation, form in the digit with poor signal, be different from traditional TR subassembly adoption analog mode and form with poor signal, simple structure easily debugs radio frequency signal's phase place and amplitude.
2. By adding a switch between the low-noise amplifier and the multifunctional transceiving control chip, transceiving isolation is increased, and channel crosstalk between components is reduced.
3. The high-power output requirement of the radar system is met by arranging the two stages of GaN amplifiers.
4. And when the radar equipment works in a receiving state, a modulation circuit of the drain electrode of the amplifier cuts off the drain electrode voltage of all the amplifiers, so that the heat consumption of the equipment is greatly reduced.
5. The temperature sensor can detect the temperature information of the assembly, and the FPGA is connected with an upper computer through a serial port chip and can send temperature data to the upper computer; the upper computer can transmit phase and amplitude debugging information to the multifunctional transceiving control chip through the FPGA, so that the phase amplitude of the radio-frequency signal can be accurately debugged.
Those skilled in the art can understand that the programs/software related to the FPGA in the above embodiment are common methods in the prior art, for example, the existing FPGA transmits phase and amplitude debugging information to the multifunctional transceiving control chip and runs in the FPGA; the method for adjusting the phase and/or the amplitude of the multifunctional transceiving control chip is a common method in the prior art, for example, the existing method for adjusting the phase and/or the amplitude can be operated in the multifunctional transceiving control chip, and the utility model does not relate to any improvement in software. The utility model only needs to connect the devices with corresponding functions through the connection relation given by the embodiment of the utility model, and does not relate to any improvement in program software. The connection mode between the hardware devices with the corresponding functions is realized by the prior art by those skilled in the art, and is not described in detail herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (9)
1. A Ku-band multichannel high-power TR component is characterized by comprising:
the receiving and transmitting switch is a single-pole double-throw radio frequency switch, and two radio frequency ports are respectively connected with an external excitation signal and the input end of the frequency conversion circuit;
the receiving and dispatching control circuit comprises a 1-branch N-path power divider, a digital control circuit and N multifunctional receiving and dispatching control chips; the public end of the 1-branch N-path power divider is connected with the public end of the transceiving switch; the N paths of the 1-path N-path power divider are respectively and correspondingly connected with the radio frequency signal public ends of the N multifunctional transceiving control chips; the data output end of the digital control circuit is connected with the data input ends of the N multifunctional transceiving control chips;
the receiving and transmitting circuit comprises N receiving and transmitting channels with the same structure; each transceiving channel comprises a receiving branch and a transmitting branch; the output end of the receiving branch is connected with the radio frequency signal input end of the multifunctional transceiving control chip; the input end of the transmitting branch is connected with the radio frequency signal output end of the multifunctional transceiving control chip; the input end of the receiving branch and the output end of the transmitting branch are connected with an antenna after being connected in a junction mode through a circulator.
2. The Ku band multichannel high power TR assembly as claimed in claim 1, wherein said receiving branch comprises a low noise amplifier and a limiter, an input of said limiter being connected to an output of said circulator; the output end of the amplitude limiter is connected with the input end of the low-noise amplifier; the output end of the low-noise amplifier is connected with the radio-frequency signal input end of the multifunctional transceiving control chip.
3. The Ku band multichannel high power TR assembly according to claim 2, wherein said receive branch further comprises a switch, said switch connected between said low noise amplifier and said multifunctional transceiver control chip.
4. The Ku-band multichannel high-power TR component according to claim 1, wherein the transmitting branch comprises a two-stage GaN amplifier, and an input end of the two-stage GaN amplifier is connected with a radio frequency signal output end of the multifunctional transceiving control chip; and the output end of the two-stage GaN amplifier is connected with one input end of the circulator.
5. The Ku-band multichannel high-power TR assembly according to claim 4, wherein the transmit branch further comprises a modulation circuit, and each GaN amplifier of the transmit branch is connected with one modulation circuit; the modulation circuit comprises a driver, a first resistor, a second resistor, a third resistor, a fourth resistor and an MOS (metal oxide semiconductor) tube; a control signal input interface of the driver is connected with a pulse signal output port of the digital control circuit through a first resistor; a modulation voltage output pin of the driver is connected with a drain electrode of the MOS tube through a third resistor, and a driving current output port of the driver is connected with a grid electrode of the MOS tube through a fourth resistor; and the source electrode of the MOS tube is connected with a power supply, and the drain electrode of the MOS tube is connected with the output end of the GaN amplifier.
6. The Ku band multichannel high power TR assembly according to claim 1, wherein the frequency conversion circuit comprises a first mixer, a filter, an amplifier, a second mixer, an intermediate frequency amplifier and an intermediate frequency filter, which are sequentially connected in series, the frequency conversion circuit further comprises a first local oscillator and a second local oscillator, an output end of the first local oscillator is connected to an input end of the first mixer, and an output end of the second local oscillator is connected to an input end of the second mixer.
7. The Ku waveband multichannel high-power TR component as claimed in claim 5, wherein the digital control circuit comprises an FPGA, a serial port chip and a temperature sensor; the temperature sensor is arranged in the cavity of the TR component, and the data output end of the temperature sensor is connected with the temperature data input end of the FPGA; the clock pin of the FPGA is connected with the clock pin of the multifunctional transceiving control chip; the data output port of the FPGA is connected with the data input ports of the N multifunctional transceiving control chips; the FPGA is connected with an upper computer through a serial port chip; and the pulse signal output port of the FPGA is connected with the control signal input interface of the driver.
8. The Ku band multichannel high power TR assembly according to claim 1, wherein the model of the multifunctional transceiver control chip is NC15334C-1418 PD.
9. The Ku band multichannel high power TR assembly according to claim 5, wherein the driver is model JSD 3490C.
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| CN202120778876.4U CN215420280U (en) | 2021-04-15 | 2021-04-15 | Ku-waveband multi-channel high-power TR (transmitter-receiver) assembly |
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| CN202120778876.4U CN215420280U (en) | 2021-04-15 | 2021-04-15 | Ku-waveband multi-channel high-power TR (transmitter-receiver) assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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