Abstract
A wide-band Ψ-shaped antenna on a partial ground plane is proposed and is experimentally investigated for Ultra Wide Band applications. A rectangular shape is modified to Ψ shape on a partial ground plane and is optimized (length and width of slots) for optimum bandwidth. An impedance bandwidth (S11 ≤ − 10 dB) of 7.6 GHz (3.8–11.4 GHz) and 8.6 GHz (3.4–12.0 GHz) is achieved for rectangular and Ψ patch antennas respectively. Analysis of rectangular patch has been presented using circuit theory concept based on cavity model. The proposed antenna has an active patch size of 15 × 15 mm on FR4 substrate with line feed exhibits nearly stable radiation pattern and is giving a maximum gain of 4.6 dB. The theoretical and simulated results are conformed experimentally on vector analyzer.
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