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A radio frequency anti-jamming architecture

A radio frequency and interference canceller technology, applied in transmission systems, electrical components, etc., can solve problems such as electromagnetic environment interference of radio frequency systems, and achieve the effect of solving accompanying interference, reducing spectrum occupation, and improving work efficiency

Active Publication Date: 2022-03-15
SHAANXI AIRCRAFT CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problem that the radio frequency system flexibly responds to electromagnetic environment interference by constructing a radio frequency anti-jamming framework between the radio frequency system antenna output and the receiver, and designing a comprehensive anti-jamming module with multiple means, so as to protect the radio frequency receiver and realize the radio frequency integration with its own platform. Purpose of interference-compatible operation, reduction of spectrum occupancy and extension of anti-jamming means

Method used

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  • A radio frequency anti-jamming architecture

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Embodiment 1

[0028] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0029] Such as figure 1 As shown, the radio frequency anti-jamming architecture constructed by the present invention has the following characteristics: radio frequency relay switches K1~K5 (1), matching load (2), program-controlled attenuator (3), interference canceller (4), electrically adjustable sink It consists of an oscillator (5), an anti-interference expansion module (6), a straight-through cable (7) and a multi-channel coupling switch (8). The function of the RF relay switch K1~K5 is: to combine according to the bus command to achieve the purpose of switching different anti-jamming channels; the function of the matching load is to absorb the RF energy beyond the receiver’s ability; the function of the program-controlled attenuator is: to suppress Small signal interference makes the system reduce the sensitivity of reception when it is s...

Embodiment 2

[0033] Such as figure 1As shown, the radio frequency relay switches K1~K5 are integrated into a relay switch unit group, and the on-off of the relay switch is controlled through the bus. The common terminal of K1 is connected to the output terminal of the receiving antenna, and the NCs of K1~K5 are sequentially connected with the switches of the next serial number. The C terminal is connected with an RF cable with an SMA connector. When there is no interference, the useful signal passes through K1 C-K1 NC(K2C)-K2 NC(K3 C)–K3 NC(K4 C)–K4 NC(K5C)-K5 The NC is then transmitted to the multi-channel coupling switch K6_5 through a straight-through cable, and output from the K6_C terminal to the receiver input terminal, which constitutes the normal working state of the receiver. The NO ends of K1~K5 are respectively connected to an anti-jamming module, and the two ends are connected with RF cables with SMA connectors. In addition to the matching load, the programmable attenuator, in...

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Abstract

The present application provides a radio frequency anti-jamming architecture, which includes a radio frequency relay switch 1, a matching load 2, a programmable attenuator 3, an interference canceller 4, an electrically adjustable notch filter 5, an anti-jamming expansion module 6, Straight-through cable 7 and multi-way coupling switch 8, wherein: the radio frequency relay switch 1 includes radio frequency relay switch K1, radio frequency relay switch K2, radio frequency relay switch K3, radio frequency relay switch K4 and radio frequency relay switch K5; matching load 2, program-controlled attenuation The device 3, the interference canceller 4, the electric adjustable trap 5, and the interference expansion module 6 are respectively connected to the normally open contact NO of the matching radio frequency relay switch, and the other end is connected to the multi-channel input terminal of the multi-channel coupling switch 8. The straight-through cable 7 is connected to the normally closed contact NC of the radio frequency relay switch K5, and the other end is connected to the terminal K6_5 of the multi-way coupling switch 8 .

Description

technical field [0001] The invention belongs to the research on anti-jamming technology in the field of electromagnetic environment effects, and in particular relates to a radio frequency anti-jamming framework. Background technique [0002] At present, when the aircraft RF electronic system is performing missions, the antennas of the airborne RF receiving equipment are exposed to the integrated RF environment formed by the platform itself and the battlefield environment, and are susceptible to electromagnetic interference. The impacts include overload, spectrum occupation, etc., corresponding to The research demand of comprehensive anti-jamming technology is urgent. The search found that several existing anti-jamming technologies have obvious deficiencies and application limitations, as follows: [0003] Chinese Patent No. CN108417555A, publication date: August 17, 2018, the name of the invention is a radio frequency module structure and implementation method for preventin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10
CPCH04B1/10
Inventor 石彩云杨智辉刘岩苏陆锋李昕张青黄鹤林张秦洲
Owner SHAANXI AIRCRAFT CORPORATION