Phased Array Antennas - QSL.net

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Phased Array Antennas Iulian Rosu, YO3DAC / VA3IUL, - Introduction - Main Characteristics of Array Antennas - Array Antenna Field Regions - Techniques to increase the Antenna Gain and change the Radiation Pattern - Phased Array Antennas - Array Antenna Elements - Patch Antenna Elements - Hertzian Dipole Array Antennas - Array Antenna Radiation Patterns - Array Factor (AF) - Array Antenna Patterns Broadside (Boresight) Array and End-fire Array - Phased Array Antenna Beamforming - Array Antenna Scanned Beam (Beam Steering) - Grating Lobes of Phased Array Antenna - The Ordinary End-fire Array - Thinned Phased Array Antenna - Nonuniformly Spaced Array Antennas - Mutual Coupling between Antenna Elements - Frequency Bandwidth of Array Antenna - Antenna Element Failure Analysis - Scan Blindness - Array Factor plots for Phased Array Antennas - Phase Shifters used in Electronically Controlled Phased Array Antennas Introduction First Antenna was invented and built in 1888 by Heinrich Hertz in his experiments to prove the existence of waves predicted by the electromagnetic theory of James C.

-Hertzian Dipole Array Antennas ... minus the ohmic and scan losses (N is the number of elements in the array): Array Antenna Gain = 10*log(N) + G e ... more directive due to the periodic current distribution across the antenna. 3. …

  Array, Periodic, Dipoles, Dipole array