Measurement of Bandwidth and FFT of a low frequency modulated signal in a Phase locked VCO

摘要

This paper presents the experimental analysis of a low frequency phase locked Voltage controlled Oscillator. The measurement of bandwidth and FFT curves of low frequency signal in range of 500 Hz to 1.5 KHz is presented. The resistors and capacitors are varied to lock the phase at desired frequency By using minimal circuit components the proposed phase locked VCO works. Further FFT of the output signal is obtained to show the validity of proposed phase locked VCO experimentally.