Frequency Tunable PIFA Design Based on Meander Line Elements

A novel design of dual-band frequency tunable Planar Inverted F Antenna (PIFA) is proposed in the paper. Primary radiator of the antenna consists of unsymmetrical meander line (ML) elements. The compact design fed by vertical probe provides two independent operations by means of an integrated switch inserted between two meander lines. Frequency tunable operation of antenna is studied and demonstrated for WLAN at 2.4/5.2 GHz and WiMAX at 2.6 GHz applications. Also, the proposed design exhibits uniform radiation patterns at the frequency band of interests. Analysis and design of the antenna is carried out Ansoft HFSS v.15.