Description: Credit 3U/4G.
Potential, antenna parameters, radiation from linear wires and loops, impedance, arrays, communication links and path loss, tropospheric propagation, fading and diversity.
Prerequisite: ECE 225 and ECE 322
Recent
Textbooks: John D. Kraus, Ronald J. Marhefka, Antennas, 3 rd edition, McGraw Hill, 2002, ISBN 0072321032
Constantine A. Balanis, Antenna Theory: Analysis and Design, 3rd Edition, Wiley, 2005, ISBN: 047166782X
Topics:
Antennas
1. Introduction and review
Maxwell’s equations
Retarded potential
Radiation from elementary sources
Catalog of antennas
2. Antenna parameters
Pattern, Directivity, Gain, Efficiency, Beamwidth, Bandwidth, Polarization, Impedance, Noise temperature, Friis formula, pathloss, radar links, satellite links.
3. Theorems of antenna analysis
Reciprocity and duality
Image theory
4. Radiation from linear wire antennas
Near fields
Radiation characteristics and parameters of dipole and monopole antennas of various lengths
5. Antenna Impedance
Self and mutual impedance of dipoles via induced EMF method
6. Radiation from loop antennas:
Radiation characteristics of: small and large circular, rectangular and other polygonal loop antennas including effect of finite ground
7. Analysis of linear arrays
Array factor,
Pattern multiplication principle,
Nelement uniform array,
Schelkunoff’s unit circle as a design aid,
Special arrays
8. Aperture antennas
Propagation
9. Tropospheric propagation
10. Distributions and diversity principles
Delay spread, Doppler sprea
