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A Wideband, Dual-Polarized, Substrate-Integrated Cavity-Backed Slot Antenna

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3 Author(s)
Paryani, R.C. ; Sch. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL, USA ; Wahid, P.F. ; Behdad, N.

A new technique for designing wideband dual-polarized slot antennas is presented. The proposed structure is in the form of a differentially fed cross-slot antenna backed by a shallow substrate-integrated cavity with a depth of approximately λ0/10 . This technique takes advantage of a double-resonance observed in off-center microstrip-fed slot antennas to enhance its bandwidth to double that of typical cavity-backed cross-slot antennas of the same size. Experimental results demonstrate a bandwidth of 19%, average gain of 5.3 dBi, isolation better than 28 dB, and wideband polarization purity.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )

Date of Publication:

2010

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