General theory of transmission lines - General Solution of the transmission line - Waveform distortion and distortion less transmission line – Loading of transmission lines, Input and Transfer impedance - Reflection factor and reflection loss. The Line at Radio Frequencies: Line of Zero dissipation - Standing waves and standing wave ratio on a line – Impedance matching: Quarter wave Transformer. The Smith Chart and its applications – Single stub matching and Double stub matching.
Waves between parallel planes of perfect conductors – Transverse electric and transverse magnetic waves – Transverse Electromagnetic waves - characteristics of TE, TM and TEM Waves – TE and TM Waves in Rectangular Wave guides – TE and TM waves in circular wave guides - Microwave cavity Resonators.
ANTENNA FUNDAMENTALS AND ANTENNA ARRAYS
Review of electromagnetic theory: Concept of vector potential. Modification for time varying retarded case - Radiation from a current element and half-wave dipole.
Antenna fundamentals: Antenna fundamentals and definition of antenna parameters, Slot antennas, Babinet’s principle.
Antenna arrays: Two element array, Principle of Pattern Multiplication, N element Uniform Linear Arrays - Broadside and End fire Arrays, Binomial Arrays.
Horn Antennas, Reflector Antennas – Geometrical characteristics - types of feeds, Micro strip Antennas -design - types of feeds, Log periodic antenna, Lens Antennas, Helical Antenna in Axial and Normal Modes-UWB Antennas - Reconfigurable antenna.
ANTENNA MEASUREMENTS AND WAVE PROPAGATION
Antenna Measurement -Measurement of Antenna pattern – Impedance Measurement. Gain Measurement and Directivity Measurement.
Ground Wave Propagation – Attenuation characteristics for ground wave propagation, Calculation of field strength at a distance.
Sky Wave Propagation – Structure of ionosphere, Mechanism of Reflection and Refraction, Critical Frequency, MUF and Skip Distance, Optimum Frequency, Virtual Height.
Space Wave Propagation – Reflection from ground for vertically and horizontally polarized waves, Reflection characteristics of earth. Resultant of direct and reflected ray at the receiver, Duct propagation.
Reference Book:
1. Ramo, Whineery and Van Duzer: “Fields and Waves in Communication Electronics” John Wiley, 2003.
2. David K.Cheng, Field and Waves in Electromagnetism, Pearson Education, 1989.
3. Harish A.R., Sachidanada M., “Antennas and Wave propagation”, Oxford University Press, 2007.
4. Constantine A. Balanis, “Antenna Theory Analysis and Design”, John Wiley, 2nd Edition 2007.
5. S. Drabowitch, “Modern Antennas” Second Edition, Springer Publications, 2007.
6. Kraus J.D., Marhefka RJ. and Ahmad Khan S., “Antennas and Wave Propagation”, TMH, New Delhi, 4 ed., (Special Indian Edition), 2010.
Text Book:
1.J.D.Ryder, “Networks, Lines and Fields”, PHI, New Delhi, 2003.
2.E.C. Jordan and K.G.Balmain “Electro Magnetic Waves and Radiating System, PHI,New Delhi, 2003.
3. John D Kraus, “Antennas for all Applications”, 3rd Edition, McGraw Hill, 2005.
