Vivian Lazarus* and Sumit KR Sharma
Defected ground structures are deliberate irregularities in the ground plane to intentionally modify antenna characteristics for emulating an aspect which is intended to modify certain parameter in order to improve antenna performance. In a dual patch antenna, it is desirable to reduce mutual coupling between radiating elements which in turn would ensure greater power transfer to radiation in desired direction as intended. Same has been achieved in this paper by employing I-shaped Defected ground structure in ground plane. This gave advantage of avoiding complex fabrication design of dual patch antenna without interference in other antenna parameters including bandwidth and frequency of operation while achieving 5.5 dB of suppression in mutual coupling.
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