Radio frequency interference canceller and method

A radio frequency interference cancellation and combiner technology, applied in the field of signal processing, can solve the problem that the interference canceler cannot accurately reconstruct the canceled signal, etc., and achieve the effect of improving the canceling effect.

Active Publication Date: 2022-01-14
36TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the main purpose of the present invention is to provide a radio frequency interference canceller and method to solve the problem that the existing interference canceller cannot accurately reconstruct the cancellation signal

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  • Radio frequency interference canceller and method

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Embodiment Construction

[0027] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. These embodiments are provided so that the present invention can be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.

[0028] At present, the wideband radio frequency interference cancellation mainly adopts the tap delay line (TDL, Timing Delay Line) scheme. The basic principle is to form the basic unit of radio frequency interference reconstruction (also called tap ), and adjust the time delay, amplitude and phase of each tap to reconstruct the co-located interference channel. When the reconstructed channel and the interference channel are precisely matc...

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Abstract

The invention discloses a radio frequency interference canceller and a method. The radio frequency interference canceller comprises a controller, a first power amplifier, a digital filter, a second power amplifier, a first analog-to-digital converter, a second analog-to-digital converter, a first digital-to-analog converter, a second digital-to-analog converter, a splitter and a combiner. The splitter is in gating connection with a transmitter power amplifier and the first power amplifier, the output end of the splitter is connected with the transmitting antenna, and the coupling end of the splitter is connected with the second analog-to-digital converter. The controller, the first digital-to-analog converter and the first power amplifier are connected in sequence; the second analog-to-digital converter, the digital filter, the second digital-to-analog converter and the second power amplifier are sequentially connected, the second power amplifier is further connected with the coupling end of the combiner, the input end of the combiner can be disconnected with the receiving antenna, and the output end of the combiner is in gating connection with the first analog-to-digital converter and the low-noise amplifier; the first analog-to-digital converter is also connected with the controller; the digital filter is further connected with the controller.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a radio frequency interference canceller and a method. Background technique [0002] Radar, communication, electronic warfare and other multi-function mission systems have the phenomenon of overlapping frequency, crowded space, and huge contrast between strong and weak signals on the same mission platform. When the transmitter is working, such as radar, communication, electronic interference, etc., it will cause strong co-site interference to the receiving equipment in the same frequency band, such as electronic reconnaissance, signal intelligence, communication reception, etc., causing serious electromagnetic compatibility problems and greatly reducing the task. efficacy. [0003] The function of the radio frequency interference canceler is to use the coherence of the co-located interference signal to actively cancel the interference signal on the receiver side throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10
CPCH04B1/10H04B1/1036
Inventor 陈顺阳张琦陈加锐黄晓国杨会宇
Owner 36TH RES INST OF CETC
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