The frequencymodulation is a non-linear modulation process. Each spectral component of the base band signal gives rise to one or two spectral components in the modulated signal.
Introduction to frequencymodulationanddemodulation. The most obvious modulation method is to vary the carrier amplitude with the instantaneous message signal value. However, the amplitude is not the only quantity the carrier that can be used to carry the message.
In this experiment you will generate FM signals and study their frequency-domain characteristics. You will examine the operational prop-erties of a phase-locked loop (PLL) and use it to demodulate FM signals.
Observe the process of delta modulation Format There are four sets of experiments in this module: A. Amplitude modulationand demodulation B. Frequencymodulation C. Demodulation of FM signals D. Fourier Synthesis It is expected that exercises A & D will be combined in order to allow completion of the work in three lab sessions.
In an FM signal, the frequency of the signal is changed by the modulation (baseband) signal while its amplitude remains the same. In an AM signal, we now know that it is the amplitude (or the envelope) of the signal that is changed by the modulation signal.
FrequencyModulationandDemodulation November 19, 2018 This lab is divided into two parts. In Part I you will learn how to design an FM modulator and in Part II you will be able to demodulate an FM signal. In the process you will also design an FIR di erentiator.
Here, the carrier frequency is maximum when the input signal is at its highest. Meanwhile, the frequency of a carrier decreases if the amplitude of the modulating signal goes down.
This experiment includes the simulation and implementation of both FM modulator and demodulator. The particular case of a sinusoidal message signal modulating a sinusoidal carrier will be studied in detail.
This document describes a lab experiment on frequencymodulationanddemodulation using hardware circuits and a training kit. The objectives are to generate FM using an IC 8038 VCO and measure the frequency deviation, modulation index, and bandwidth.
