TRANSMISSION AND PROPAGATION

Book Introduction to Introduction Radiation Mechanism –single wire 2 wire dipoles Current Distribution on a thin wire antenna.Antenna Parameters - Radiation Patterns Patterns in Principal Planes Main Lobe and Side Lobes Beamwidths Polarization Beam Area RadiationIntensity Beam Efficiency Directivity Gain and Resolution Antenna Apertures Aperture Efficiency Effective Height illustrated Problems. Introduction Traveling wave radiators – basic concepts Long wire antennas – field strength calculations and patterns Microstrip Antennas-Introduction Features Advantages and Limitations Rectangular Patch Antennas –Geometry and Parameters Impact of different parameters on characteristics. Broadband Antennas: Helical Antennas – Significance Geometry basic properties; Design considerations for monofilar helical antennas in Axial Mode and Normal Modes (Qualitative Treatment).