Radio Frequency Adaptive Interference Cancellation Device and Its Debugging Method

Abstract

The invention provides a radio-frequency adaptive interference cancellation device, and the device comprises a vector modulation circuit, a feedback control circuit, and a synthesis and feedback circuit. An output end of a directional coupler A is electrically connected with the input end of the vector modulation circuit. The directional coupler A transmits a reference signal to a vector modulator, and the output end of the vector modulator is electrically connected with the input end of the feedback circuit. The output end of the feedback circuit is electrically connected with the input end of the feedback control circuit. The vector modulator is electrically connected with a feedback controller, and the output end of a transmitter is electrically connected with the input end of the directional coupler A. The output end of the feedback circuit is electrically connected with the input end of a receiver. Aiming at ironing out the defects in the prior art, the invention provides the radio-frequency adaptive interference cancellation device and a debugging method therefor, so as to achieve the zero-drift precise inhibition of a multiplier in the radio-frequency adaptive interference cancellation device and the precise matching of time delay.

Description

technical field [0001] The invention belongs to the technical field of circuit design and equipment level electromagnetic compatibility, and in particular relates to a radio frequency interference cancellation device and a debugging method thereof. Background technique [0002] In places with dense antennas, when multiple high-power transmitting devices and high-sensitivity receiving devices work at the same time, co-site radiation interference will occur. The traditional electromagnetic interference control strategy is a passive interference suppression method, which mainly avoids electromagnetic interference through transmission channel suppression, space separation, frequency division, and time separation. Traditional methods to solve the above-mentioned co-location radiation interference mainly include management and control measures such as widening the antenna spacing and frequency division and time division. In the case of limited space, the effect of increasing the ...

AI Technical Summary

Problems solved by technology

The Chinese patent "An Adaptive Interference Cancellation Device and Its Debugging Method (Application No.: 201110223502.7)" mentions a debugging method, but this debugging method is used to search for two-way cancellation weights and does not involve delay When matching the measurement accuracy problem

Images