FEKO Simulation of Multi-Resonant Low-Profile PIFA

A passive, low-profile multi-resonant planar-inverted-F antenna (PIFA) element well-suited for portable communications is presented. The antenna combines the optimal low-profile geometry of a planar inverted-F antenna with a double-tuned structure to create a multi-resonant element with monopole-class radiation properties. The form factor and overall dimensions are held constant for comparisons to a similar single-resonant antenna in different near-field environments.