Free Web Hosting Provider - Web Hosting - E-commerce - High Speed Internet - Free Web Page
Search the Web

98.705 ANTENNA THEORY AND DESIGN (TA) 3-2-0

Module I
VLF and LF Transmitting Antennas, Medium Frequency antennas, High frequency antennas, Half wave dipole antennas, Delta matching. Harmonic antennas, Rhombic antennas, Rhombic arrays, Travelling wave antennas. Folded dipole antennas. Yagi - uda antenna - Design.

Module II
Reflector antennas and their feed systems - Plane sheet reflectors and diffraction, Corner reflectors - active and passive. Parabolic antennas - general properties - Comparison between parabolic and corner reflectors. The paraboloidal reflector. Cylindrical Parabolic Reflector. Cassegrain feed Lens antennas - Non metallic dielectric lens antennas - Fermat's Principle. Artificial dielectric lens antennas.

Module III
Antenna siting and effect of typical imperfect ground. Turnstile antenna, Superturnstile antenna Matching arrangements - Baluns and traps. Patch or microstrip antennas. Antenna design considerations for Satellite Communication. Receiving versus Transmitting considerations. Band width consideration. Antennas at cell site - Unique situation of Cell - Site antennas. Mobile antennas.

Text Books : -

Module I
Ref (1) (Ch 8,9)
Module II
Ref(2) (Ch 12,14)
Module III
Ref(2) (Ch 16), Ref(3)(Ch 5.4,5.5,5.6)

References : -

1. K. D Prasad. Antenna & Wave Propagation (3rd ed.), Satya Prakashan, New Delhi.
2.John.D.Kraus.Antennas,2nd ed.
3.William C. Y. Lee. Mobile Cellular Telecommunications,2nd ed, McGraw Hill.

Question paper : -

The question paper will consist of two parts. Part 1 is to cover entire syllabus, and compulsory for 40 marks. This will contain 10 compulsory questions of 4 marks each.
Part II is to cover 3 modules, and carries 60 marks. There can be 3 questions from each module ( 10 marks each) out of which 2 are to be answered.