Artificial dielectric material for lowering resonant frequency of microstrip circular patch antenna

Abstract

In this paper, the implementation of artificial dielectric material is proposed to lower resonant frequency of conventional microstrip circular patch antenna. The artificial dielectric material is applied to replace the dielectric material of conventional microstrip circular patch antenna which is designed based on TM11 resonance mode. The development of artificial dielectric material is implemented by incorporating cylindrical conductors into FR4 Epoxy dielectric substrate used as host material. Here, the conventional microstrip circular patch antenna is designed to resonate at frequency of 2.4GHz. From characterization result, it shows that the resonant frequency of proposed antenna with artificial dielectric material can be lowered up to 1.648GHz. Hence there is an increase of effective permittivity of artificial dielectric material around 212.2%.