New Frequency Reconfigurable Patch Antenna for Wireless Communication

In this paper, a new frequency reconfigurable patch antenna is proposed. The planned antenna is designed on the dielectric substrate of FR4-epoxy with 4.4 relative permittivity, with a compact volume of 25 × 21 × 1.67mm3. The proposed antenna is formed of a Positive Intrinsic Negative diode (PIN diode), placed at the radiating patch to achieve frequency reconfigurability. Based on the switching state of the PIN diode, the antenna is capable of operating at two different frequency ranges. The simulation of the proposed antenna is implemented using CST microwave studio, it was re-simulated in Ansys HFSS software to confirm the results obtained. The performance of the antenna is analysed from the reflection coefficient, the voltage standing wave ratio(VSWR), the surface current distribution and the radiation pattern. The antenna has two resonant frequencies: 3.44 GHz (Worldwide Interoperability for Microwave Access (WiMAX)) and 5.26 GHz (Wireless Local Area Network (WLAN)).