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Design of a high isolation dual-polarized slot-coupled microstrip antenna

✍ Scribed by Xian-Ling Liang; Shun-Shi Zhong; Wei Wang

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
174 KB
Volume
47
Category
Article
ISSN
0895-2477

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✦ Synopsis

The design of a wideband dual-polarized slot-coupled stacked microstrip antenna with high isolation is introduced. The proposed stacked-patch antenna is excited by both open-ended and T-shaped microstrip lines via two H-shaped slots placed orthogonally so as to improve the isolation between the two polarization ports. The measured isolation is better than 40.5 dB over the bandwidth from 8.8 to 9.8 GHz with cross-polarization level of less than Ϫ28.5 dB. The measured VSWR Յ 2 bandwidths reach 20.7% and 19.1% for the two polarization ports, respectively. This antenna is suitable as an array element for spaceborne synthetic aperture radar (SAR) and active phased-radar applications.

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