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Dual-polarized shaped-beam printed antenna for airborne SAR applications

✍ Scribed by S. B. Sharma; Sanjeev Kulshrestha; Rajeev Jyoti; C. Sriharsha; B. K. Pandey

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
245 KB
Volume
44
Category
Article
ISSN
0895-2477

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✦ Synopsis

This paper presents the design and development of a dual-polarized shaped-beam antenna for airborne synthetic aperture radar (SAR). A multilayer, stacked, printed antenna with electromagnetic coupling is chosen as the radiating element due to wide bandwidth and low cross polarization. Shaping in elevation plane is achieved by employing the null-perturbation technique in order to obtain complex excitation distribution. Many sets of coefficients giving the same power patterns were obtained and the set with the minimum current taper ratio was selected for realization of the antenna. A planar array of 8 ϫ 8 elements is designed and developed at the C band. The measured and simulated radiation patterns and returnloss performance are also presented.

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