Title :
Design of a dual-polarized L-band microstrip antenna with high level of isolation for SAR applications
Author :
Bonadiman, M. ; Schildberg, R. ; Lacava, J. C da S
Author_Institution :
Antennas & Propagation Lab., Technol. Inst. of Aeronaut., Sao Jose de Campos, Brazil
Abstract :
Dual-polarized antennas with high level of isolation are required for high-resolution synthetic aperture radar (SAR) applications. This paper describes how quarter-wave transformers can be used not only to match the antenna input ports but also to get a high isolation between them (less than -30 dB). Therefore, using commercial software packages, an airborne L-band (1.2 to 1.3 GHz) SAR antenna was designed and analyzed based on this technique. A prototype was manufactured which presented good agreement between its measurements and the CAD predictions.
Keywords :
UHF antennas; airborne radar; electromagnetic wave polarisation; impedance matching; microstrip antennas; radar antennas; radar resolution; software packages; synthetic aperture radar; 1.2 to 1.3 GHz; CAD; L-band microstrip antenna; SAR applications; airborne antenna; commercial software packages; dual-polarized microstrip antenna; high-resolution SAR; input port matching; isolation; quarter-wave transformers; synthetic aperture radar; Aperture antennas; Application software; Impedance matching; L-band; Microstrip antennas; Radar antennas; Software packages; Software prototyping; Synthetic aperture radar; Transformers;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330321
