engleski

Demodulated Signal Distortion in Frequency Modulation Using Selective BP Filter

Simulation of non-linear distortion in frequency modulation-demodulation process because of modulation signal spectrum limitation is done. For example, two signals from broadcasting are taken. Modulated signals has spectrum limited with band-pass 4th order filters designed with Butterworth and Chebyshev approximations. Simulation is done using MATLAB programing tool. Obtained spectrums of modulated filtered signal and demodulated signal for both types of used filters are presented. Mismatching filter central frequency and carrier frequency is predictedand distortion factors are calculated. Valuation of obtained results is done.

frequency modulation; spectrum limitation; analog filters; demodulated signal distortion

nije evidentirano