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This document describes an activity to investigate the effect of noise on FM demodulation with and without a limiter circuit. The activity objectives are to determine the importance of a limiter in an FM system and become familiar with pre-detection and post-detection noise. Students will observe oscilloscope and spectrum analyzer outputs at different points in an FM demodulation circuit with the limiter on and off under varying noise levels. The results will show how a limiter removes amplitude variations

Author

Davy Jones

Language

EN