%0 Journal Article %T Modeling of a PIN diode RF switch for reconfigurable antenna application %J Scientia Iranica %I Sharif University of Technology %Z 1026-3098 %A Kumar, J. %A Basu, B. %A Talukdar, F. A. %D 2019 %\ 06/01/2019 %V 26 %N 3 %P 1714-1723 %! Modeling of a PIN diode RF switch for reconfigurable antenna application %K Frequency Reconfigurable Antenna %K PIN Diode Modeling %K Microstrip antenna %K SAR investigation %K UWB to Narrow band switching %R 10.24200/sci.2018.20110 %X The paper proffers the procedure to model a PIN diode RF switch using full-wave EM solver, HFSS and utilizes the switch to built a simple partial ground plane antenna with omnidirectional radiation pattern. The proposed antenna has ability to tune it from ultra-wideband to narrowband mode. The frequency reconfigurability is accomplished by incorporating a rectangular slot resonator and a PIN diode RF switch embedded in the partial ground plane. The antenna demonstrates -10 dB impedance bandwidth from 500 MHz to 6 GHz in the ultra-wideband mode and 1.125 GHz to 2 GHz in the narrowband mode. A parasitic is stacked in the ground plane to improve the impedance matching and a rectangular slot is fused to explore the bandwidth-limiting possibility of the antenna. The optimization of the antenna is done by full-wave EM solver, HFSS and Specific Absorption Rate (SAR) of the antenna is examined using the equivalent flat tissue phantom. A prototype of the proposed antenna is fabricated and execution is accepted by measured results. The proposed antenna has simple and miniature structure, low SAR (0.41 W/Kg), omnidirectional pattern and low cross-polarization ( %U https://scientiairanica.sharif.edu/article_20110_9a88f380ab3888ae1924adce5fcda77d.pdf