AWPTV (B-TECH Electronics and Communication Engineering 5th)

Section-A

Retarded potential, field of short dipole, Antenna pattern & antenna parameters Antenna pattern, Gain,

Directivity, Radiation resistance, Aperture, Beam-width etc, Reciprocity theorem for antenna.

.

Section-B

Wave equation for radiated fields from current and voltage sources in terms of electric scalar potential and

magnetic vector potential .Fields and pattern of an infinitesimal dipole. Definition of various potentials

used in antenna theory .:

Relation between current distribution and field pattern of an antenna, linear antenna, half wave dipole,

Antenna impedance, Directivity, Radiation resistance, Directional properties, Effect of ground on antenna

pattern, Input impedance Broad band matching.

Section-C

Two element array, broad side, End fired pattern, Beam width pattern multiplication, multi element array

and their properties, Synthesis of an array.parabolic feed antena, conical, helix, log periodic, horn,

Microwave antenna ground waves propagation, Space waves propagation, Effect of Earth, Duct formation,

Ionosphere, and sky wave

 Section-D

TELEVISION SYSTEM:

Picture transmission, sound transmission, picture reception, sound reception synchronization, receiver

controls, color television. Monochrome picture tube, Beam deflection, screen phosphor, face plate, picture

tube characteristics, picture tube, circuit controls. Television Camera Tubes: Basic principal, Image

orthicon, Vidicon.