Subject : Principle of Communication Engineering

Topic : Amplitude Modulation and Demodulation

Difficulty : High

A modulator multiplies two signals together to create two brand-new frequencies which are the sum and difference of the input frequencies.The following two modulators generate DSBSC wave.

• Balanced modulator
• Ring modulator

Ring Modulator

Fig.1 shows the circuit diagram of a diode ring modulator .

Fig.1 Circuit diagram of a diode …