Single-channel radio frequency anti-saturation device, method and system

Abstract

The invention relates to a single-channel radio frequency anti-saturation device, method and system. The device comprises: an electro-optical conversion module for receiving radio frequency input signals, converting the radio frequency input signals into optical signals; an optical branching module, wherein the optical branching module is used for splitting an optical signal into multiple paths ofsynchronous optical signals; an optical fiber delay module used for respectively carrying out multipath transmission on multipath synchronous optical signals to generate multiple paths of time delayoptical signals with different time delays relative to the synchronous optical signals; a photoelectric conversion module used for converting multiple paths of time delay optical signals into multiplepaths of time delay electric signals, and an algorithm processing module used for carrying out iterative computation on the multiple paths of time delay electric signals through an adaptive filteringalgorithm to obtain an optimal weight, weighting the time delay electric signals and outputting the time delay electric signals in a radio frequency mode. By adopting the method, radio frequency single-channel anti-saturation can be realized.

Description

technical field [0001] The present application relates to the field of radio frequency technology, in particular to a single-channel radio frequency anti-saturation device, method and system. Background technique [0002] The current anti-saturation technology at the receiving end mainly implements anti-saturation through an automatic gain control circuit (Automatic Gain Control, AGC). Using the AGC to control the gain can maintain a low gain or large attenuation state, avoiding the saturation phenomenon of subsequent circuits due to strong interference. At present, this solution is widely used. However, although the anti-saturation scheme of AGC can ensure that the receiver does not appear to be saturated, it has the same degree of suppression effect on interference and useful signals, and the actual useful signals cannot be used because the gain is too small. Contents of the invention [0003] Based on this, it is necessary to address the above technical problems and pr...

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Problems solved by technology

[0003] Based on this, it is necessary to address the above technical problems and provide a single-channel radio frequency anti-saturation device, method and system that can solve the problem of suppressing useful signals caused by anti-saturation interference in the prior art

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