A receiver radio frequency panoramic scanning circuit

Abstract

The invention discloses a receiver radio frequency panorama scanning circuit, and in particular relates to the technical field of receiver radio frequency panorama scan. It solves the problems of radio frequency panorama scanning in the prior art, which cannot balance the scan speed, scan bandwidth and resolution bandwidth. The receiver radio frequency panoramic scanning circuit includes radio frequency conversion, intermediate frequency gain, analog-to-digital converter, storage unit, FFT analysis, FFT spectrum storage unit, scanning controller, scanning control data storage unit and delay counter, radio frequency conversion, intermediate frequency gain , analog-to-digital converter, storage unit, FFT analysis, FFT spectrum storage unit and scan controller are connected sequentially, and the scan control data storage unit is respectively connected with radio frequency conversion, intermediate frequency gain, analog-to-digital converter, storage unit and FFT analysis, scan control The controller is connected with the scan control data storage unit, and the delay counter is connected with the scan control data storage unit and the scan controller respectively.

Description

technical field [0001] The invention belongs to the technical field of radio frequency panoramic scanning of receivers, and in particular relates to a radio frequency panoramic scanning circuit of a receiver. Background technique [0002] Receivers are devices used to process radio signals, including test receivers, spectrum analyzers, monitoring receivers, etc. Radio frequency panoramic scanning is the core function of the receiver, which is used to search and intercept the spectrum of the target radio signal and extract the characteristic parameters of the target radio signal. One of the main indicators of RF panoramic scanning is scanning speed. [0003] Receivers are mainly divided into heterodyne analog IF receivers and heterodyne digital IF receivers according to their implementation. [0004] In the heterodyne analog IF receiver, the input signal is frequency-differenced with the local oscillator signal in the mixer. Only when the frequency of the difference-frequen...

AI Technical Summary

Problems solved by technology

[0008] For RF panoramic scanning, when scanning with a large scanning bandwidth, it is necessary to scan and detect point by point to obtain spectrum data. The resolution bandwidth is large. When the resolution bandwidth is small, the scanning speed is very slow. When scanning with a small scanning bandwidth, FFT analysis directly obtains all points. For spectral data, the resolution bandwidth is small and the scanning speed is fast, but the scanning bandwidth is limited, so the scanning speed, scanning bandwidth and resolution bandwidth cannot be considered

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