A compact planar CPW fed monopole antenna for Ultra Wideband applications

A compact (25mm×15mm×0.8mm) co-planar waveguide fed monopole UWB antenna with transitions in feed line is proposed in this article. A good agreement is found in between simulated and measured results of the proposed design. The antenna provides a wide bandwidth from 4.5GHz to 11GHz with high average efficiency of 78%, flat gain variation of 2-4.5dBi and minimal group delay variation. The antenna pattern is omnidirectional in H-plane and monopole like in E-plane. The proposed simple structured antenna is easy for fabrication and integration to PCB board.