A Compact C-Shaped Printed UWB Antenna with Band-Notched Characteristic

A compact printed ultra-wideband (UWB) antenna with band-notched characteristic is proposed. The presented antenna consists of a modified ground plane structure and a novel C-shaped radiation patch fed by a microstrip line. By etching a C-shaped slot in the radiating patch, the notched band of 3.3–3.8GHz for WiMAX is generated. The notched band can be easily tuned by controlling the size of the slot. The measured results show that the proposed antenna operates over a wide bandwidth from 3 GHz to 16GHz with return loss less than −10, except a stop-band of 3.3–3.8 GHz. Some key parameters of the antenna are discussed in details. The time-domain characteristics are given.