Analog Communications Syllabus

B.Tech. (ECE) V Semester

ANALOG COMMUNICATIONS

Course Code: EUREC503 Category: CE

Credits: 3 Hours: 3 per week

Department: ECE

UNIT-I

Linear Modulation Systems: Modulation, Frequency Translation, Amplitude modulation, AM equation, Modulation index, Spectrum of AM Signal, AM generation, AM detection, DSBSC- generation & detection, SSB- generation & detection, VSB – generation & detection, power relations, Applications of linear modulation systems, Frequency division multiplexing.

UNIT-II

Angle Modulation: Angle modulation, FM, FM Equation, modulation index, frequency deviation, NBFM, WBFM, Spectrum of FM, Bandwidth of FM, Carson’s rule, Phase modulation, Comparison of FM and PM, Generation of FM, Phasor representation of FM and AM, FM demodulation, Pre-emphasis and De-emphasis, power relations, stereophonic FM, Comparison of AM and FM.

UNIT-III

Noise: Sources of noise, thermal noise, shot noise flicker noise, white noise, mathematical representation of noise, power spectral density, effect of filtering on noise power spectral density, linear filtering, noise bandwidth, quadrature representation of noise and their power spectral density, noise figure, effective noise temperature, noise calculations for cascade stages.

UNIT-IV

Noise in AM and FM: Signal power, Noise power, Signal to noise ratio for DSBSC, SSB and FM, FM threshold effect.

UNIT-V

Radio Transmitters & Receivers: Classification of Radio Transmitters, AM Transmitters, FM Transmitters, Telegraph Transmitters, Telephone Transmitters, SSB Transmitters, Classification of Radio Receivers, TRF Receiver, Superhetrodyne Receiver, Characteristics of Superhetrodyne Receivers, Tracking, Importance of IF, Image Frequency Rejection, equation, Amplitude limiting, AGC, Delayed AGC, AFC.

Text Books:

1. Principles of communication H. Taub and Schilling McGraw Hill.

2. Communications Systems Simon Haykins, PHI.

References:

1. Electronic Communication Systems G. Kennedy, McGraw Hill.

2. Applied Electronics and Radio Engg. GK. Mithal

3. Modern Digital and Analog Communications Systems B. P. Lathi, BSP.