Abstract

A low profile ultrawide band (UWB) planar inverted-F antenna (PIFA) for multiple input multiple output (MIMO) applications is studied. This antenna consists of rectangular monopole as a feed plate and top loaded rectangular plate. The assembly of feed plate and top loaded rectangular monopole is grounded through shorting wall. The size of top loaded rectangular plate and rectangular feed plate are chosen 20 × 10 mm2 and 14 × 6.75 mm2 respectively. The proposed antenna covers the frequency range from 3.0–10.8 GHz with impedance bandwidth of 113 % and isolation between antenna elements is obtained less than −15 dB without any isolation improvement techniques. The diversity performances is analyzed for evaluation of diversity antenna. Antenna is also characterized by S-parameters, far field radiation patterns, efficiency, and peak realized gain. Fidelity factor for proposed antenna is calculated to characterize time domain behaviour. The optimized structure is fabricated and tested. The acceptable agreement is obtained between simulated and measured results.

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