Compact Wearable Microstrip Patch Antenna for 2.4 GHz using Loaded Slits and Shorting Pins

A compact wearable microstrip patch antenna is designed to operate at ISM 2.4 GHz, printed on semiflexible ROGER 3003 substrate. Loaded slits with shorting pins are proposed to reduce the size of the patch and enhance the bandwidth of the antenna. The proposed antenna size is reduced by 20% (0.376 λo x 0.429 λo x 0.0248 λo) when compared with the conventional patch antenna. The slot length, width, gap and position of the shorting pins are adjusted to reduce the size of patch and achieve a better gain (3.53dBi at 2.4 GHz). Moreover, to examine its specific absorption rate (SAR) performance of this work, its simulated-on sample human phantom tissue model and results show that the average SAR performance of 10 g tissue is 0.6538 W/kg. This antenna is suitable for wireless body area network (WBAN) applications and ISM Bands.