Compact Printed Dual Ellipses Monopole Antenna for UWB System

A novel printed monopole antenna with two ellipses is proposed to operate from 3 to 11.5 GHz, which is fed by a microstrip line. The antenna is very small in size with dimension of 20 by 24 mm and has an approximate omnidirectional pattern across the major bandwidth. This antenna can be especially applied as the element of ultrawide-band(UWB) antenna arrays for UWB application.