A narrowband corner slot patch antenna has been designed for industrial, scientific, andmedical radio band (ISM band) for short distance radio communication. These antennas are analyzedand are optimized using Ansoft High-Frequency Structure Simulator (HFSS). The objective is to shrinkthe size of the radiating patch element without compromising antenna performance. The proposed designis investigated under various parametric analyses and are compared. The overall size of the antenna isreduced by 32.8% when compared with traditional patch antenna available in the market. This can beachieved by introducing four slots inclined at 450 in the radiating patch. The antenna provides abandwidth of 25% in ISM band (|S11|≤10dB) between 2.37 GHz to 2.43 GHz. In addition, maximumVoltage Standing Wave Ratio (VSWR) value near to 1.0 and gain of 7.5 dB is achieved. Finally, goodagreement has been obtained for using this proposed design for short distance radio communications.
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