Electromagnetic Analysis of Cable Effects on the Performance of Portable Antennas

Abstract

Ground plane may act as a part of radiator for most portable antennas. Various cables are connected to the ground plane, such as flexible printed circuit board (FPCB), speaker wire, and coaxial cables, which significantly affect the radiation performances of antennas.The resonance frequency and impedance of the antenna are affected significantly when an extra cable is connected to different locations on the ground plane.