Title :
Dual polarized multilayer aperture-coupled patch antennas for spaceborne application in C- and X-band
Author :
Rostan, F. ; Heidrich, E. ; Wiesbeck, W.
Author_Institution :
Inst. fur Hochstfrequenztechnik und Elektronik, Karlsruhe Univ., Germany
Abstract :
The paper discusses the element and subarray requirements and designs for advanced dual polarized future spaceborne SAR antennas using aperture-coupled microstrip patch elements. Special emphasis is given to achieve high polarization purity, low loss, good port-to-port isolation, high bandwidth and high aperture efficiency. Two design examples are shown for frequencies in C-band (5.3 GHz) and X-band (9.6 GHz) having a port-to-port-isolation of 25 dB and a polarization isolation better than 28 dB.<>
Keywords :
active antenna arrays; antenna phased arrays; electromagnetic wave polarisation; microstrip antenna arrays; radar antennas; scanning antennas; spaceborne radar; synthetic aperture radar; 5.3 GHz; 9.6 GHz; C-band; SHF; X-band; active phased arrays; antenna design; aperture-coupled patch antennas; coupling effects; dual polarized multilayer antennas; element requirements; high aperture efficiency; high bandwidth; high polarization purity; low loss; microstrip patch elements; polarization isolation; port-to-port isolation; scanning antenna; spaceborne SAR antennas; spaceborne application; subarray requirements; Aperture antennas; Bandwidth; Feeds; Frequency; Microstrip antenna arrays; Microstrip antennas; Nonhomogeneous media; Patch antennas; Polarization; Substrates;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407710
