Wideband receiving channels, receiver and receiving method with amplitude and phase compensation

Abstract

The invention relates to wideband receiving channels, a receiver and a receiving method with amplitude and phase compensation. The multiple channels work at the same time, and different bandwidth filters perform gate filtering to filter radar echo signals. Each channel comprises a first front middle module, a second front middle module and a control detection module. The first front middle modules receive the radar echo signals and perform phase shift, amplitude compensation and primary down-conversion on the radar echo signals, and then the radar echo signals are sent to the second front middle modules for secondary down-conversion; one path of a plurality of filter banks which are connected in parallel and different in bandwidth is gated according to signal bandwidth to perform medium frequency filtering, and meanwhile amplitude and phase compensation is further performed on the path of the filter banks; the control detection modules control the first front middle modules and the second front middle modules. Due to the wideband receiving channels, the receiver and the receiving method, the problem that a receiver is poor in consistency of amplitude and phase under wideband work frequency is solved, multiple medium frequency work bandwidths capable of being switched are acquired, and the advantages of being good in consistency of bandwidth, amplitude and phase and high in universality are achieved.

Description

technical field [0001] The invention relates to radar receiver technology, in particular to a wideband receiving channel for amplitude and phase compensation, a receiver and a receiving method thereof. Background technique [0002] Conventional radar receivers are mostly narrow-band receivers. Even wide-band receivers have only one fixed bandwidth, resulting in relatively single radar functions, and are often limited by amplitude and phase consistency problems, which affect radar performance. In order to adapt to the development needs of multifunctional radars, wideband receivers with multiple signal bandwidths have emerged as the times require, using wideband phased array technology. [0003] The key to wideband receivers is to use wideband devices and use scientific methods to filter out spurious signals that affect receiver performance. Due to the high bandwidth requirements of wideband receivers, there are relatively few types of components that can be selected, and the...

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a broadband receiving channel with amplitude and phase compensation, which realizes the consistency of amplitude and phase of different signals after being processed by the receiving channel, and effectively solves the problem of deterioration of spurious signals in the receiving process of broadband signals

[0005] The second object of the present invention is to provide a broadband receiver with amplitude and phase compensation, which realizes the consistency of amplitude and phase between channels, and effectively solves the problem of deterioration of spurious signals in the receiving process of broadband signals

[0006] The third object of the present invention is to provide a broadband receiving method with amplitude and phase compensation, which realizes the consistency of amplitude and phase of different signals after broadband receiving and processing, and effectively solves the deterioration of spurious signals in the process of receiving broadband signals question

Images