Title :
Parametric Study of Stacked Patch Array Configurations as Alternative Feeds for Offset Reflectors
Author :
Kona, Keerti S. ; Bahadori, Keyvan ; Rahmat-Samii, Yahya
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA
Abstract :
A potential feed for the 12 m reflector antenna system was assessed for use in radiometer-scatterometer system to study soil moisture. The reflector system calls for seven feeds that can operate at 1.413 GHz and 1.26 GHz frequencies with one feed at the focus of the reflector and the other six forming a ring around the focus. Numerous configurations of patch arrays were studied and a hexagonal configuration consisting of seven elements with 0.76lambda at 1.413 GHz spacing and tapered excitation on the outer ring was selected as the best design. Optimized hexagonal array has a similar pattern to the optimized corrugated horn at both frequencies and at all seven feed locations
Keywords :
UHF antennas; antenna feeds; finite difference time-domain analysis; microstrip antenna arrays; offset reflector antennas; radar antennas; radiometers; remote sensing by radar; 1.26 GHz; 1.413 GHz; 12 m; corrugated horn; feeds; hexagonal array; offset reflector antenna system; radiometer-scatterometer system; stacked patch array configurations; Antenna arrays; Antenna feeds; Finite difference methods; Geometry; Horn antennas; Microwave radiometry; Parametric study; Radar antennas; Reflector antennas; Spaceborne radar;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711590
