- Departments / Centres
Pre-Requisite : EC205
Contact Hours and Credits : ( 3 -0- 0 ) 3
To impart knowledge on basics of antenna theory and to analyze and design a start of art antenna for wireless communications.
Radiation fundamentals. Potential theory. Helmholtz integrals. Radiation from a current element. Basic antenna parameters. Radiation field of an arbitrary current distribution. Small loop antennas.
Receiving antenna. Reciprocity relations. Receiving cross section, and its relation to gain. Reception of completely polarized waves. Linear antennas. Current distribution. Radiation field of a thin dipole. Folded dipole. Feeding methods. Baluns.
Antenna arrays. Array factorization. Array parameters. Broad side and end fire arrays. Yagi-Uda arrays Log-periodic arrays.
Aperture antennas. Fields as sources of radiation. Horn antennas. Babinet’s principle. Parabolic reflector antenna. Microstrip antennas.
Wave Propagation : Propagation in free space. Propagation around the earth, surface wave propagation, structure of the ionosphere, propagation of plane waves in ionized medium, Determination of critical frequency, MUF. Fading, tropospheric propagation, Super refraction.
Students are able to