CN112763992B - 30 MHz-3 GHz communication radar integrated calibration source - Google Patents
30 MHz-3 GHz communication radar integrated calibration source Download PDFInfo
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- CN112763992B CN112763992B CN202011531130.XA CN202011531130A CN112763992B CN 112763992 B CN112763992 B CN 112763992B CN 202011531130 A CN202011531130 A CN 202011531130A CN 112763992 B CN112763992 B CN 112763992B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000010354 integration Effects 0.000 claims abstract description 5
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
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- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
The invention discloses a 30 MHz-3 GHz communication radar integrated calibration source, which is characterized in that: the device comprises a reference source circuit, a baseband circuit, a frequency conversion circuit, an attenuation power division circuit and a control interface circuit; the reference source circuit, the baseband circuit, the frequency conversion circuit and the attenuation power division circuit are connected in sequence, and the control interface circuit is connected with the baseband circuit, the frequency conversion circuit and the attenuation power division circuit respectively to realize interaction. The invention adopts DDS and mixed integrated assembly technology to realize the integration calibration source of the communication radar of 30 MHz-3 GHz, and meets the requirement of on-board equipment on various signal forms of the calibration source. Fills the gap of the equipment in China and meets the technical requirement of detection of the airborne communication radar.
Description
Technical Field
The invention belongs to the field of radio frequency micro-system microwaves, and particularly relates to a 30 MHz-3 GHz communication radar integrated calibration source.
Background
Because the communication and radar detection have different requirements on calibration signals, the communication and radar system equipment generally uses independent calibration sources, and the output signals of the traditional calibration source modules are in a single signal form, so that the requirements on various calibration signal forms in the system can not be met.
The radar calibration source is realized in DDS-based radar calibration signal source design and realization (electronic design engineering (2011) in 8 th year), only single-point continuous wave and pulse linear frequency modulation calibration signals can be realized, comb spectrum calibration signals can not be realized, and the requirements of communication radar integration on the calibration signals can not be met.
Disclosure of Invention
The invention aims to provide a 30 MHz-3 GHz communication radar integrated calibration source, which has the characteristics of various signal forms, standardization and wide bandwidth.
The technical solution for realizing the purpose of the invention is as follows: a30 MHz ~ 3GHz communication radar integration calibration source, its characterized in that: the device comprises a reference source circuit, a baseband circuit, a frequency conversion circuit, an attenuation power division circuit and a control interface circuit; the reference source circuit, the baseband circuit, the frequency conversion circuit and the attenuation power division circuit are connected in sequence, and the control interface circuit is connected with the baseband circuit, the frequency conversion circuit and the attenuation power division circuit respectively to realize interaction.
Compared with the prior art, the invention has the remarkable advantages that: the invention adopts DDS and mixed integrated assembly technology to realize the integration calibration source of the communication radar of 30 MHz-3 GHz, and meets the requirement of on-board equipment on various signal forms of the calibration source. Fills the gap of the equipment in China and meets the technical requirement of detection of the airborne communication radar.
Drawings
FIG. 1 is a general block diagram of a 30 MHz-3 GHz communication radar integrated calibration source in accordance with the present invention.
Fig. 2 is a detailed schematic block diagram of a calibration source.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The invention adopts DDS technology to generate baseband signals with various signal forms (point frequency/pulse/comb spectrum), the baseband signals are converted to 30 MHz-3 GHz through twice frequency conversion, and 4 paths of calibration signals are generated through power division.
Referring to fig. 1, the integrated calibration source of the 30 MHz-3 GHz communication radar of the present invention includes a reference source circuit, a baseband circuit, a frequency conversion circuit, an attenuation power division circuit and a control interface circuit. The reference source circuit, the baseband circuit, the frequency conversion circuit and the attenuation power division circuit are connected in sequence, and the control interface circuit is connected with the baseband circuit, the frequency conversion circuit and the attenuation power division circuit respectively to realize interaction.
The signal flow is described in connection with fig. 2.
The reference source circuit comprises a first power divider A.
The baseband circuit comprises a first phase-locked source A, DDS circuit and a first filter A which are sequentially connected, the DDS circuit is connected with the control interface circuit, and the first filter A is connected with the frequency conversion circuit.
The frequency conversion circuit comprises a first amplifier A, a first mixer A, a second phase-locked source B, a second filter B, a second amplifier B, a second mixer B and a third phase-locked source C, wherein the first amplifier A, the first mixer A, the second filter B, the second amplifier B and the second mixer B are sequentially connected, the second phase-locked source B is connected with the first mixer A, the third phase-locked source C is connected with the second mixer B and the control interface circuit, and the second mixer B is connected with the attenuation power division circuit.
The attenuation power division circuit comprises a third filter C, a first numerical control attenuator A, a second power divider B and 4 second numerical control attenuations B, wherein the third filter C, the first numerical control attenuator A and the second power divider are sequentially connected, the 4 second numerical control attenuations B are connected in parallel to the output end of the second power divider, and the first numerical control attenuations A and the 4 second numerical control attenuations B are both connected with the control interface circuit.
The external input 100MHz reference signal is divided into 3 paths by the first power divider A, and the 3 paths of reference signals respectively provide reference signals for the first phase-locking source A, the second phase-locking source B and the third phase-locking source C.
The first phase-locked source A outputs a 2.5GHz signal to provide a sampling signal for the DDS circuit, the DDS circuit generates a baseband signal with a center frequency of 1000-1010 MHz and a frequency of a point frequency/comb spectrum/pulse mode, the baseband signal sequentially passes through the first filter A, the first amplifier A and the first mixer A to output a center frequency of 10-10.01 GHz signal, and the second phase-locked source B provides a local oscillation signal for the first mixer A.
The output signal of the first mixer A sequentially passes through a second filter B, a second amplifier B, a second mixer B, a third filter C, a first numerical control attenuator A and a second power divider B to output 4 paths of signals with the center frequency of 30-3000 MHz, the 4 paths of signals with the center frequency of 30-3000 MHz output 4 paths of signals with the center frequency of 30-3 GHz through 4 second numerical control attenuations B, and a third phase-locked source C provides local oscillation signals for the second mixer B.
Aiming at communication radar integrated equipment, the invention adopts technologies such as Direct Digital Synthesis (DDS) and hybrid integrated circuits, and the like to realize the integrated design of a 30 MHz-3 GHz communication radar calibration source, and the calibration source adopts standard ASAAC design, so that the universality is strong, and the requirements of weapon equipment on miniaturization, modularization, standardization and the like are met. Aiming at a communication and radar system mixed system, the invention realizes an integrated calibration source with various signal forms through DDS, a mixed integrated circuit and other technologies.
Claims (1)
1. A30 MHz ~ 3GHz communication radar integration calibration source, its characterized in that: the device comprises a reference source circuit, a baseband circuit, a frequency conversion circuit, an attenuation power division circuit and a control interface circuit; the reference source circuit, the baseband circuit, the frequency conversion circuit and the attenuation power division circuit are connected in sequence, and the control interface circuit is respectively connected with the baseband circuit, the frequency conversion circuit and the attenuation power division circuit to realize interaction;
The reference source circuit comprises a first power divider A;
the baseband circuit comprises a first phase-locked source A, DDS circuit and a first filter A which are sequentially connected, the DDS circuit is connected with the control interface circuit, and the first filter A is connected with the frequency conversion circuit;
The frequency conversion circuit comprises a first amplifier A, a first mixer A, a second phase-locked source B, a second filter B, a second amplifier B, a second mixer B and a third phase-locked source C, wherein the first amplifier A, the first mixer A, the second filter B, the second amplifier B and the second mixer B are sequentially connected, the second phase-locked source B is connected with the first mixer A, the third phase-locked source C is connected with the second mixer B and the control interface circuit, and the second mixer B is connected with the attenuation power division circuit;
The attenuation power division circuit comprises a third filter C, a first numerical control attenuator A, a second power divider B and 4 second numerical control attenuations B, wherein the third filter C, the first numerical control attenuator A and the second power divider are sequentially connected, the 4 second numerical control attenuations B are connected in parallel to the output end of the second power divider, and the first numerical control attenuations A and the 4 second numerical control attenuations B are both connected with the control interface circuit;
the external input 100MHz reference signal is subjected to power division by a first power divider A to form 3 paths of reference signals, and the 3 paths of reference signals respectively provide reference signals for a first phase-locked source A, a second phase-locked source B and a third phase-locked source C;
The first phase-locked source A outputs a 2.5GHz signal to provide a sampling signal for the DDS circuit, the DDS circuit generates a baseband signal with a center frequency of 1000-1010 MHz and a frequency of a point frequency/comb spectrum/pulse mode, the baseband signal sequentially passes through the first filter A, the first amplifier A and the first mixer A to output a signal with the center frequency of 10-10.01 GHz, and the second phase-locked source B provides a local oscillation signal for the first mixer A;
The output signal of the first mixer A sequentially passes through a second filter B, a second amplifier B, a second mixer B, a third filter C, a first numerical control attenuator A and a second power divider B to output 4 paths of signals with the center frequency of 30-3000 MHz, the 4 paths of signals with the center frequency of 30-3000 MHz output 4 paths of signals with the center frequency of 30-3 GHz through 4 second numerical control attenuations B, and a third phase-locked source C provides local oscillation signals for the second mixer B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011531130.XA CN112763992B (en) | 2020-12-22 | 30 MHz-3 GHz communication radar integrated calibration source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011531130.XA CN112763992B (en) | 2020-12-22 | 30 MHz-3 GHz communication radar integrated calibration source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112763992A CN112763992A (en) | 2021-05-07 |
| CN112763992B true CN112763992B (en) | 2024-06-21 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171743A (en) * | 2017-07-14 | 2017-09-15 | 中国航天科工集团八五研究所 | The manufacture method in Larger Dynamic multichannel wide band calibration source, communication equipment and communication equipment |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171743A (en) * | 2017-07-14 | 2017-09-15 | 中国航天科工集团八五研究所 | The manufacture method in Larger Dynamic multichannel wide band calibration source, communication equipment and communication equipment |
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