IT404 Unit 2
Analog & Digital Communication

Amplitude Modulation

Unit 2 Study Material

Download detailed notes, important questions and PYQ analysis for IT404 Analog & Digital Communication Unit 2.

📻 AM

Amplitude Modulation is used to transmit information by varying carrier amplitude.

📡 Modulator

Modulator combines message signal and carrier signal for transmission.

🎚️ Demodulator

Demodulator extracts original message signal from the modulated wave.

📘

Detailed Notes

Complete notes on modulation, need of modulation, AM, DSB-FC, modulation index, frequency spectrum, power relation, bandwidth, AM modulators and demodulators.

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Important Questions

Important RGPV questions on AM wave, modulation index, power calculation, AM transmitter, AM receiver and superheterodyne receiver.

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📄

PYQ Analysis

Previous year questions and repeated topics from Amplitude Modulation Unit 2 for quick exam revision.

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Unit 2 Topics

Modulation
Need of Modulation
Types of Modulation Techniques
Amplitude Modulation
DSB-FC
Modulation Index
Frequency Spectrum of AM Wave
Linear Modulation
Over Modulation
Power Relation in AM
Transmission Efficiency
Modulation by Complex Signal
Bandwidth of AM
AM Modulators
Square Law Modulator
Switching Modulator
Advantages of AM
Disadvantages of AM
Demodulation of AM
Suppressed Carrier AM System
DSB-SC
SSB-SC
VSB-SC
Comparison of AM Systems
Envelope Detector
Square Law Detector
Synchronous Detection of AM
Low Power AM Transmitter
High Power AM Transmitter
AM Receivers
TRF Receiver
Superheterodyne Receiver
Sensitivity of Receiver
Selectivity of Receiver
Fidelity of Receiver