Design considerations of planar inverted-F antenna (PIFA) on a finite ground plane

The operation of a PIFA mounted on a finite ground plane is investigated. This includes the influence on the input and radiation characteristics caused by the placements of the short-circuit plate and the feed wire as well as where the antenna is mounted on a finite ground plane. It has been found that the location where the antenna is mounted on the finite ground plane has a significant impact on the resonant frequency, bandwidth and radiation characteristics. Moreover, the positions of both the short-circuit plate and the feed wire have little impact on the radiation characteristics of the PIFA. The numerical simulations have been validated by measurements.