Coupling analysis of dipole antenna over high impedance surface

Abstract

A dipole antenna placed close to a high impedance surface (HIS) has been analyzed as a coupled resonator circuit. The coupling between dipole and HIS has been studied to deduce the necessary conditions for designing and placing the antenna. It has been found that the dipole resonant frequency is not limited to ±90° reflection phase range of HIS. A dipole ranging from 0.7 GHz to 1.55 GHz can couple efficiently with the HIS with operating frequency of 0.875 GHz for a wide impedance bandwidth.