THIAGARAJAR COLLEGE OF ENGINEERING: MADURAI – 625 015 ...

Unit – III: Angle Modulation: Phase modulation and frequency modulation – Narrow band and wideband
frequency modulation – Multi tone FM waves – Transmission bandwidth of FM waves – Generation and
demodulation of FM waves – Response of linear filters to FM waves - Non linear effects in FM systems -
FM threshold effect – Preemphasis and deemphasis. (10 Periods)
Unit – IV : Pulse Analog Modulation: Low pass sampling theorem – Bandpass sampling theorem –
Sampling of bandpass signals- Practical aspect of sampling – TDM – pulse amplitude modulation – Pulse
time modulation – spectra of pulse analog modulation system. (10 Periods)
Unit – V: Noise in CW modulation: Noise – Narrowband noise – Envelope of sine wave plus SNR for
coherent reception with DSBSC Modulation, SSB Modulation – Noise in AM receivers using envelope
detection – Noise in FM reception - Noise in pulse modulation systems.
(10 Periods)
Text Books:
1. Simon Haykin, “Communication Systems”, Wiley Eastern, Fourth Edition, 2001.
Reference books:
1. Simon Haykin, “Communication Systems”, Wiley Eastern, Third Edition, 1996.
2. Leon W. Couch II, “ Digital and Analog Communication Systems”, Prentice Hall, 1997
3. Sam Shanmugam, “Digital and Analog Communication Systems”, 2 nd ed, John Wiley, 1992.
4. B. Carlson, “Introduction to Communication systems”, 3 rd Edition, McGraw Hill, 1989.
D44 ENGINEERING ELECTROMAGNETICS
Unit I: Electrostatic fields: Coulomb’s Law and Field Intensity-Electric Fields due to Continuous Charge
distribution- Electric Flux Density – Gauss Law - Applications of Gauss’s Law –Electric Potential –
Relationship between E and V - An electric dipole and flux lines-Energy Density in Electrostatic fields.
(10 Periods)
Unit II: Electric Fields in Material Space: Properties of Materials – Convection and Conduction
Currents – Conductors – Dielectric Constant & Strength – Linear, Isotropic, and Homogeneous Dielectrics
– Continuity Equation and Relaxation Time –Boundary Conditions. Electrostatic Boundary –Value
Problems: Introduction – Poisson’s and Laplace’s Equations – General Procedure for solving Poisson’s or
Laplace’s equation – Resistance and capacitance.
(10 Periods)
Unit III: Magnetostatic Fields: Biot -Savart’s Law – Ampere’s Circuit Law – Applications of Ampere’s
Law- Magnetic Flux Density – Maxwell’s Equation for static EM Fields – Magnetic Scalar and Vector
Potentials-derivation of Biot – Savart’s Law and Ampere’s law. Magnetic Forces, Materials, and devices
: Forces due to magnetic fields – Magnetic Torque and moment – Magnetic dipole – Magnetization in
materials – Magnetic boundary conditions – Inductors and Inductances- Magnetic energy.
(10 Periods)
Unit IV: Maxwell’s Equations:Faraday’s law – transformer and motional EMFs – Displacement current –
Maxwell’s equations in final forms – Time varying potentials – Time harmonics fields. Electromagnetic
Wave propagation: Waves in general -wave propagation in lossy dielectrics -plane waves in lossless
dielectrics – plane waves in free space – plane waves in good conductors – power and the poynting vector