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Article • J. Microw. Optoelectron. Electromagn. Appl. 20 (3) • Sept 2021 • https://doi.org/10.1590/2179-10742021v20i31194   copy

SDR-Based Spectrum Analyzer Based in Open-Source GNU Radio

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

A low-cost spectrum analyzer is presented, based on a commercial software defined radio and an open-source application package. Fundamentals regarding the receiving operation and its sensitivity are presented, along with measurements, of two 8 and 12-bits software defined radio models. An application, run within GNU Radio, is presented, deployed to overcome the hardware analog-to-digital converter limitation to monitor wide bandwidths. Results are shown for two different frequency ranges, 200 MHz bandwidth.

Index Terms
GNU Radio; Signal Processing; Software-Defined Radio; Spectrum monitoring

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