Abstract
A novel design method for an aperture-coupled microstrip patch antenna with a single feeding structure is proposed for dual resonance frequencies with mutually perpendicular polarizations. A new type of square patch with double notches is used as a radiator, and the crossed slot and bended microstrip feeder are adopted for the dual polarizations in the aperture-coupled structure. The characteristics of this antenna were experimentally investigated for generalizing the dual-frequency behavior. A Ku-band Tx/Rx 2×2 subarray antenna was designed and manufactured to examine the applicability as a ground terminal antenna for satellite communications. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 24: 370–374, 2000.
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