Design of Low Cost FFT Based Spectrum Analyzer for Monitoring Stations

This paper discusses about the design and implementation of a low-cost spectrum monitoring solutions for day-to-day TTC operations of multiple GEO/GSO satellites. The spectrum analyzer data, from several earth stations, can be accessed remotely from the control centre, to enable monitoring of spacecraft telemetry. The designed FFT-SA has a max span of 40 MHz with RF front-end attenuation of 30 dB and noise floor level of -120 dBm.