software radio receiver circuit

Abstract

The invention provides a software radio receiver circuit. The software radio receiver circuit comprises a low-noise radio-frequency front end circuit, a high-linearity radio frequency front end circuit, a harmonic attenuation radio frequency front end circuit, a common analog intermediate-frequency circuit, a local oscillator signal generation circuit, a biasing circuit and a control circuit. One end of the low-noise radio-frequency front end circuit is connected with the first end of the common analog intermediate-frequency circuit after the low-noise radio-frequency front end circuit is connected with the high-linearity radio frequency front end circuit in parallel. One end of the harmonic attenuation radio frequency front end circuit is connected with the first end of the common analog intermediate-frequency circuit .The local oscillator signal generation circuit is connected with the low-noise radio-frequency front end circuit, the high-linearity radio frequency front end circuit and the harmonic attenuation radio frequency front end circuit. The biasing circuit is used for providing a reference bias voltage and a reference bias current for the software radio receiver circuit. The control circuit is used for controlling work modes of the software radio receiver circuit. The software radio receiver circuit can meet the requirements of various application environments.

Description

technical field [0001] The invention relates to the field of software radio, in particular to a software radio receiver circuit. Background technique [0002] In today's information age, people have regarded the transmission and interaction of information as an essential part of social life. Among them, wireless communication is the most active part in the field of communication, and has been widely used in various aspects. In order to meet the different needs of consumers, international communication organizations have introduced different communication standards one after another. Faced with a wide variety of standards, consumers prefer to support different communication services through only one electronic device. [0003] Software radio (SDR) technology is a wireless communication system architecture proposed in recent years. It was first developed from military communication technology. Its basic idea is to configure hardware through software to achieve flexible recon...

AI Technical Summary

Problems solved by technology

[0008] Summarizing the research status of domestic software radio receivers, it can be found that although some breakthroughs have been made, the receiver circuit is still the bottleneck of software radio applications

At present, some multi-standard configurable receiver circuits have appeared, but they can only realize partial configurability, support some communication standards, and lack the necessary calibration functions

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