A Novel Frequency Reconfigurable Patch Antenna for WLAN Applications

In this paper, a novel hexagonal shaped frequency reconfigurable patch antenna is proposed that can be deployed in WLAN, mobile satellite communication and radio navigation. In this reconfigurable patch antenna design a hexagonal patch is connected to two nearby rectangular patches via PIN diodes allowing it to switch between five different frequencies( i.e., 5.27 GHz, 2.16 GHz, 5.45 GHz, 2.88 GHz and 5.76 GHz ). The proposed design provides 6.38 dBi gain and 435 MHz bandwidth when both diodes are in OFF state. Ansys HFSS is used for antenna simulation and a prototype with necessary biasing components and circuit has been fabricated and tested using Keysight Vector Network Analyzer N9925A.