A compact square-ring printed monopole ultra wideband antenna

Abstract

A simple and compact microstrip-fed ultra wideband (UWB) printed monopole antenna is proposed in this paper. The antenna is composed of a square ring and occupies about 7.91 GHz bandwidth covering 3.09-11 GHz. The experimental and simulated results exhibit good agreement. The characteristics of the proposed antenna are analyzed, and the geometry parameters for optimal performance are also investigated in detail. A quasi-omnidirectionally and quasi- symmetrically radiation pattern in y-z plane is obtained. The results measured or simulated validated that the antenna satisfies the requirements of UWB communications, and will be a good solution for UWB applications.