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A phase-locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is related to the phase of an input signal. The following code was written by Paul Sand, a graduate student at Northern Illinois University in Dekalb, IL. This Matlab code demodulates an FM signal using a. First, we will need to get the Phase-Locked Loop up and running and characterize its limitations. This is particularly important because the rest of our system.

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The phase locked loop - PLL. The phase locked loop is a non-linear feedback loop. As an FM demodulator, the output is taken from the. LPF, as shown. In an FM demodulation circuit which demodulates an FM signal by the use of a phase-lock loop constructed of a phase comparator, a loop filter and a. Our family of audio/video image frequency (IF) demodulators supports PAL, SECAM and NTSC standards. It offers signal phase-locked loop (PLL) demodulation of.

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A new type of FM demodulator, the Frequency Locked Loop (FLL) is presented. The concept employed in this class of circuits is shown to be applicable in two. In the paper the design of programmable. FM demodulator is developed in Xilinx ISE software and functionally checked in Model Sim b software. Key. Applications of the CDB phase-locked loop device, such as FM demodulation, FSK demodulation, tone decoding, frequency multiplication.