ANALOG COMMUNICATION:

Credits	Periods			Exam Hrs.	Sessional Marks	Exam Marks	Total Marks
	Theory	Tutorial	Lab
4	3	1	-	3	30	70	100

1. Linear Modulation Systems: 

Need for Modulation, Frequency Translation, Method of Frequency
Translation, Amplitude Modulation, Modulation Index, Spectrum of AM
Signal, Modulators and Demodulators (Diode detector), DSB-SC Signal and
its Spectrum, Balanced Modulator, Synchronous Detectors, SSB Signal, SSB
Generation Methods, Power Calculations in AM Systems, Application of AM
Systems.
2. Angle Modulation Systems: 
Angle Modulation, Phase and Frequency Modulation and their Relationship,
Phase and Frequency Deviation, Spectrum of an FM Signal, Bandwidth of
Sinusoidally Modulated FM Signal, Effect of the Modulation Index on
Bandwidth, Spectrum of Constant Bandwidth FM, Phasor Diagram for FM
Signals,
3. FM Generation:  
Parameter variation method, Indirect method of Frequency Modulation
(Armstrong Method), Frequency Multiplication, PLL FM Demodulator, Pre –
emphasis and De – emphasis, Comparison of FM and AM.
4. Noise In AM and FM Systems: 
Sources of Noise, Resistor Noise, Shot Noise, Calculation of Noise in a Linear
System, Noise in AM Systems, Noise in Angle Modulation Systems,
Comparison between AM and FM with respect to Noise, Threshold
Improvement in Discriminators, Comparisons between AM and FM.
5. Radio Transmitters: 
Classification of Radio Transmitters, AM and FM Transmitters, Radio
Telegraph and Telephone Transmitters, SSB Transmitters.
6. Radio Receivers: 
Radio receiver Types, AM Receivers – RF Section, Frequency Changing and
Tracking, Intermediate Frequency and IF Amplifiers, Automatic Gain Control
(AGC); FM Receivers – Amplitude Limiting, FM Demodulators, Ratio
Detectors, ISB Receiver, Comparison with AM Receivers.
7. Communication Receivers: 
Extensions of the Super-heterodyne Principles, Additional Circuits.


Text Books: 
1. Principles  of  Communication  Systems,  H.  Taub  and  D.  L.  Schilling,  McGraw
Hill, 1971.
2. Communication Systems, Simon Haykins (2nd
 Edition).
3. Electronic Communication Systems, G. Kennedy, McGraw Hill, 1977 (2nd
Edition).

References: 
1.  Modern Digital and Analog Communication Systems, B. P. Lathi (2nd
 Edition).
2.  Electronic Communications Modulation and Transmission, Robert J.
Schoenbeck, PHI N. Delhi, 1999.