Ultra-wideband synthesis assembly for simulating radar antenna beam
By designing an ultra-wideband synthesis component that simulates the radar antenna beam, the complex circuit design problem caused by the frequency characteristics of RF devices is solved, and multi-band adaptability and efficient signal synthesis are achieved, which is suitable for radar simulation complete systems.
Patent Information
- Application Number
- CN202422397180.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing ultra-wideband synthesis components of radar antenna beams need to consider the frequency characteristics and gain slope compensation of RF devices during circuit design, making it difficult to adapt to radar signals in multiple frequency bands.
An ultra-wideband synthesis component simulating radar antenna beams was designed, including an LRM connector, a control board, a broadband gain adjustment module, and a broadband combiner module. By splitting the 6-channel input signal into 16 channels and performing amplification and compensation, and then synthesizing the 4-channel signal output, the frequency characteristics and gain adjustment were achieved to adapt to radar signals in various frequency bands.
This component is perfectly compatible with the entire system, its RF performance meets the system's requirements, and its internal modules are reasonably laid out, making it easy to commission and maintain during production.
Smart Images
Figure CN223309190U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of radar antenna synthesis, in particular to an ultra-wideband synthesis component for simulating radar antenna beams. Background Art
[0002] Due to the different functions of the signals received by the radar antenna, the ultra-wideband synthesis component of the radar antenna beam can synthesize different radar signals with interference signals, clutter signals, and external radiation source signals and send them to the radar receiving equipment for frequency conversion and signal processing. It is generally designed specifically for the entire radar.
[0003] The ultra-wideband synthesis component of the radar antenna beam is mainly used to realize ultra-wideband signal synthesis, so that it can adapt to radars in different frequency bands.
[0004] However, in actual use, the existing ultra-wideband synthesis components of radar antenna beams have obvious frequency characteristics. Therefore, during circuit design, it is necessary to consider the matching of the entire link and the slope compensation of the gain so that the components can adapt to radar signals in multiple frequency bands. Utility Model Content
[0005] The purpose of the utility model is to provide an ultra-wideband synthesis component for simulating a radar antenna beam, so as to solve the problem that, in the actual use of the ultra-wideband synthesis component of the radar antenna beam in the prior art, since the radio frequency devices all have obvious frequency characteristics, it is necessary to consider the matching of the entire link and the slope compensation of the gain during circuit design, so that the component can adapt to radar signals in various frequency bands.
[0006] To achieve the above objectives, the present invention provides an ultra-wideband synthesis component for simulating a radar antenna beam, the ultra-wideband synthesis component comprising an LRM connector, a control board, a broadband gain adjustment module, a broadband combining module, and an adapter board, wherein the LRM connector and the control board are both connected to the adapter board, the broadband gain adjustment module and the broadband combining module are provided on the adapter board, and the broadband gain adjustment module and the broadband combining module are connected via a cable;
[0007] The LRM connector is used to transmit 6 types of input signals to the broadband gain adjustment module of the adapter board;
[0008] The control board is used to receive instructions and upload information, convert voltage, and realize control of the broadband gain adjustment module;
[0009] The broadband gain adjustment module is used to split the 6-way input signal into 16-way signals for amplification and compensation, and has a gain adjustment function;
[0010] The broadband combining module is used to combine 16 channels of signals into 4 channels of signal output.
[0011] The broadband gain adjustment module is composed of four broadband gain adjustment submodules, and the broadband combining module is composed of four broadband combining submodules.
[0012] Among them, the operating frequency band of the broadband gain adjustment module is: 0.1GHz~40GHz, the gain of the broadband gain adjustment submodule is: 5±1.5dB, the attenuation dynamics of the broadband gain adjustment submodule is: 60dB, and the attenuation step of the broadband gain adjustment submodule is: 1dB.
[0013] The operating frequency band of the broadband combining submodule is 0.1 GHz to 40 GHz, and the gain of the broadband combining submodule is 0 ± 1.5 dB.
[0014] Among them, the control board provides 422 and SPI communication functions for receiving instructions and uploading information. The control board also has the function of converting DC+28V voltage into DC+5V and DC-5V, and the control function of the broadband gain adjustment module.
[0015] The adapter board is used to provide power supply and control connections between the broadband gain adjustment module and the broadband combiner module and the control board.
[0016] The utility model discloses an ultra-wideband synthesis component for simulating a radar antenna beam, comprising an LRM connector, a control board, a broadband gain adjustment module, a broadband combining module and an adapter board. Since the LRM connector is used to transmit six types of input signals to the broadband gain adjustment module of the adapter board, the broadband gain adjustment module is used to power-divide the six-channel input signals into 16-channel signals for amplification and compensation, and has a gain adjustment function, and the broadband combining module is used to combine the 16-channel signals into four-channel signal output. Compared with the prior art, the present technical solution is an ultra-wideband synthesis component for a radar antenna beam that is specifically designed for the index requirements of a radar simulation complete system. The component can perfectly fit the use of the complete system and can meet the index requirements of the system in terms of radio frequency performance. At the same time, the functional modules inside the ultra-wideband synthesis component of the radar antenna beam are reasonably arranged, which is convenient for production debugging and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 The utility model is a structural diagram of an ultra-wideband synthesis component for simulating radar antenna beams.
[0019] Figure 2 The utility model provides a circuit principle diagram of an ultra-wideband synthesis component for simulating radar antenna beams.
[0020] 101-LRM connector, 102-control board, 103-adapter board, 104-broadband gain adjustment submodule, 105-broadband combining submodule. DETAILED DESCRIPTION
[0021] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0022] See also Figure 1 and Figure 2 The present invention provides an ultra-wideband synthesis component for simulating a radar antenna beam, the ultra-wideband synthesis component for simulating a radar antenna beam comprising an LRM connector 101, a control board 102, a broadband gain adjustment module, a broadband combining module, and an adapter board 103. The LRM connector 101 and the control board 102 are both connected to the adapter board 103. The broadband gain adjustment module and the broadband combining module are provided on the adapter board 103. The broadband gain adjustment module and the broadband combining module are connected to each other via a cable.
[0023] The LRM connector 101 is used to transmit the six input signals to the broadband gain adjustment module of the adapter board 103;
[0024] The control board 102 is used to receive instructions and upload information, convert voltage, and control the broadband gain adjustment module;
[0025] The broadband gain adjustment module is used to split the 6-way input signal into 16-way signals for amplification and compensation, and has a gain adjustment function;
[0026] The broadband combining module is used to combine 16 channels of signals into 4 channels of signal output.
[0027] In this embodiment, compared with the existing technology, this technical solution is an ultra-wideband synthesis component of the radar antenna beam that is specifically designed according to the index requirements of the radar simulation whole system. It can perfectly fit the use of the whole system and can meet the index requirements of the system in terms of radio frequency performance. At the same time, the functional modules inside the ultra-wideband synthesis component of the radar antenna beam are reasonably arranged, which is convenient for production debugging and maintenance.
[0028] Among them, the six 0.1-40GHz ultra-wideband input signals are respectively the target sum signal, the target azimuth difference signal, the interference signal, the target pitch difference signal, the external radiation source signal and the clutter signal. The interference signal, the external radiation source signal and the clutter signal are all split into four channels by the broadband gain adjustment module. The target sum signal is split into two channels by the broadband gain adjustment module, and the target azimuth difference signal and the target pitch difference signal are each split into one channel. The 16 signals generated after the 6 input signals are split are respectively sent to 16 amplification and attenuation channels. Each amplification and attenuation channel includes a two-stage amplifier with a gain of 15dB and a two-stage 1dB step and 31.5dB dynamic digitally controlled attenuator. After passing through the amplification and attenuation channels, the 16 signals are synthesized by the broadband combiner module. The synthesis methods include the following four:
[0029] a. One target sum signal, one interference signal, one external radiation source signal and one clutter signal are combined into one sum signal by a combiner and then amplified and output;
[0030] b. One target azimuth difference signal, one interference signal, one external radiation source signal and one clutter signal are combined into one azimuth difference signal by a combiner and then amplified and output;
[0031] c. One target pitch difference signal, one interference signal, one external radiation source signal and one clutter signal are combined into one pitch difference signal by a combiner and then amplified and output;
[0032] d. One target and signal, one interference signal, one external radiation source signal and one clutter signal are combined into one auxiliary signal through a combiner and then amplified and output.
[0033] In this embodiment, the components selected for this assembly have an input and output impedance of 50Ω, and the operating frequency band covers 0.1 to 40 GHz. This design focuses on gain flatness, attenuation dynamics, and attenuation accuracy to improve the quality of radar signal synthesis. This technical solution has the characteristics of ultra-wideband and large dynamic adjustment. It is a radar signal synthesis design with a reasonable internal structure layout and easy installation.
[0034] Furthermore, the broadband gain adjustment module is composed of four broadband gain adjustment sub-modules 104 , and the broadband combining module is composed of four broadband combining sub-modules 105 .
[0035] Furthermore, the operating frequency band of the broadband gain adjustment module is: 0.1GHz~40GHz, the gain of the broadband gain adjustment submodule 104 is: 5±1.5dB, the attenuation dynamics of the broadband gain adjustment submodule 104 is: 60dB, and the attenuation step of the broadband gain adjustment submodule 104 is: 1dB.
[0036] Furthermore, the operating frequency band of the broadband combining submodule 105 is 0.1 GHz to 40 GHz, and the gain of the broadband combining submodule 105 is 0 ± 1.5 dB.
[0037] Furthermore, the control board 102 provides 422 and SPI communication functions for receiving instructions and uploading information. The control board 102 also has the function of converting DC+28V voltage into DC+5V and DC-5V, and the control function of the broadband gain adjustment module.
[0038] Furthermore, the adapter board 103 is used to provide power and control connections between the broadband gain adjustment module and the broadband combiner module and the control board 102 .
[0039] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.
Claims
1. An ultra-wideband synthesis component for simulating radar antenna beams, characterized in that: The device comprises an LRM connector, a control board, a broadband gain adjustment module, a broadband combining module and an adapter board, wherein the LRM connector and the control board are both connected to the adapter board, the broadband gain adjustment module and the broadband combining module are provided on the adapter board, and the broadband gain adjustment module and the broadband combining module are connected via a cable; The LRM connector is used to transmit 6 types of input signals to the broadband gain adjustment module of the adapter board; The control board is used to receive instructions and upload information, convert voltage, and realize control of the broadband gain adjustment module; The broadband gain adjustment module is used to split the 6-way input signal into 16-way signals for amplification and compensation, and has a gain adjustment function; The broadband combining module is used to combine 16 channels of signals into 4 channels of signal output.
2. The ultra-wideband synthesis component for simulating radar antenna beams according to claim 1, wherein: The broadband gain adjustment module is composed of four broadband gain adjustment submodules, and the broadband combining module is composed of four broadband combining submodules.
3. The ultra-wideband synthesis component for simulating radar antenna beams according to claim 2, wherein: The operating frequency band of the broadband gain adjustment module is: 0.1GHz~40GHz, the gain of the broadband gain adjustment submodule is: 5±1.5dB, the attenuation dynamics of the broadband gain adjustment submodule is: 60dB, and the attenuation step of the broadband gain adjustment submodule is: 1dB.
4. The ultra-wideband synthesis component for simulating radar antenna beams according to claim 3, wherein: The operating frequency band of the broadband combining submodule is 0.1 GHz to 40 GHz, and the gain of the broadband combining submodule is 0 ± 1.5 dB.
5. The ultra-wideband synthesis component for simulating radar antenna beams according to claim 4, wherein: The control board provides 422 and SPI communication functions for receiving instructions and uploading information. The control board also has the function of converting DC+28V voltage into DC+5V and DC-5V, and the control function of the broadband gain adjustment module.
6. The ultra-wideband synthesis component for simulating radar antenna beams according to claim 5, wherein: The adapter board is used to provide power supply and control connections between the broadband gain adjustment module and the broadband combining module and the control board.