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

Volume

4

fYear

2004

fDate

20-25 June 2004

Firstpage

4376

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330321

Filename

1330321