Title :
Polarimetry on ultra-wideband phased arrays at wide scan angles off principal planes
Author :
Kefauver, W. Neill ; Huffman, Julie ; Cencich, Thomas
Author_Institution :
Lockheed Martin Space Syst. Co., Littleton, CO, USA
Abstract :
Ultra-wideband dual-polarized arrays are commonly used in polarimetry applications. However, poor orthogonality between the two desired polarizations is observed at wide scan angles. This paper investigates the behavior using a Vivaldi wideband array and compares its pattern characteristics to a narrowband patch antenna array. An elegant two-port approach is presented to compensate for this phenomenon and produce the desired orthogonal polarizations.
Keywords :
antenna phased arrays; antenna radiation patterns; broadband antennas; microstrip antenna arrays; polarisation; ultra wideband antennas; Vivaldi wideband array; narrowband patch antenna array; orthogonal polarizations; pattern characteristics; polarimetry; principal planes; two-port approach; ultrawideband dual-polarized arrays; ultrawideband phased arrays; wide scan angles; Calibration; Finite element analysis; Gain; Phased arrays; Ports (Computers); Wideband; Vivaldi; polarimetry; port isolation; ultra-wideband phased array;
Conference_Titel :
Phased Array Systems & Technology, 2013 IEEE International Symposium on
Conference_Location :
Waltham, MA
DOI :
10.1109/ARRAY.2013.6731814
