Experimental study demonstrates over 30 dB isolation in 1.8 GHz dual-polarized patch antenna arrays, highlighting dual-feed techniques for reducing signal interference.
An experimental study of a dual-polarized L-probe patch antenna is presented. The antenna is designed to operate at around 1.8 GHz. A "dual-feed" technique is introduced to achieve high isolation between two input ports. The proposed antenna has an impedance bandwidth of 23.8% (SWR/spl les/2), 15% (SWR/spl les/1.5) and an isolation over 30 dB. In array designs, techniques for improving the isolation between two adjacent elements of an antenna array are also investigated. A two-element array with more than 30 dB isolation is designed and tested.
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Wong et al. (2004) studied this question.
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