Subject : Principle of Communication Engineering

Topic : Angle modulation and demodulation

Difficulty : High

1. Varactor diode modulator is the direct method of FM generation wherein the carrier frequency is directly varied by the modulating signal.
2. A varactor diode is a semiconductor diode whose junction capacitance varies linearly with applied voltage when the diode is reverse biased. 3.Varactor diodes are used along with reactance modulator …