Design of Dual-Frequency CPW-fed Monopole Antenna for Wireless Application

Abstract

A Novel and simple monopole antenna with a T-shape (gap) coplanar waveguide (CPW)-fed has been proposed in this paper. The antenna comprises of a rectangular single-step patch with a filter properties has been designed. A new coupling structure having a closed loop step-impedance resonator embedded with a uniform resonators and a modified ground plane (slots) is capable of generating dual band monopole antenna. The antenna was designed to operate at two resonating frequencies 3.5 and 5 GHz which covers a frequency bands from (3.2-3.5GHz) and (4.7-5.6GHz) respectively. A good monopole-like radiation pattern and gain over the operating bands have been obtained.