Title :
A dual-polarised wideband planar array for X-band synthetic aperture radar
Author :
Parfitt, A. ; Nikolic, N.
Author_Institution :
Telecommun. & Ind. Phys., CSIRO, Epping, NSW, Australia
Abstract :
This paper describes the design and performance of a wideband planar array panel for use in a dual linear-polarisation antenna for the Australian Defence Science and Technology Organisation (DSTO) Ingara X-band airborne synthetic aperture radar (SAR). The final array aperture is approximately 1200 mm by 200 mm and comprises 192 dual-fed microstrip patch elements divided into three panels, each panel with an integrated microstrip feed network. To accommodate high power operation, a coaxial power distribution network is used to feed the panels. The primary objective of the design was to achieve on-axis cross-polarisation radiation in each polarisation at least 25 dB below the co-polarised radiation over a 600 MHz bandwidth.
Keywords :
airborne radar; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; microstrip antenna arrays; military radar; planar antenna arrays; radar antennas; synthetic aperture radar; 600 MHz; Australian Defence Science and Technology Organisation; DSTO; Ingara SAR; X-band radar; antenna design; array panel; co-polarised radiation; coaxial power distribution network; dual-fed elements; dual-polarised planar array; high power operation; integrated feed network; linear-polarisation antenna; microstrip patch elements; on-axis cross-polarisation radiation; performance; synthetic aperture radar; wideband planar array; Aperture antennas; Australia; Broadband antennas; Coaxial components; Feeds; Microstrip antenna arrays; Planar arrays; Radar antennas; Synthetic aperture radar; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959762
