Equivalent Circuit Model of a High Q Tunable PIFA

This paper presents an Equivalent Circuit Model (ECM) for a high Quality factor (Q) tunable Planar Inverted F Antenna (PIFA). A PIFA is described and simulated with the Finite-Difference Time-Domain (FDTD) method. The resonance behavior of the proposed ECM is compared to the FDTD results and shows a match. The ECM is also valid when the PIFA is made tunable with an additional capacitor.