UWB Antenna with 3.5-/5.5-GHz Dual Band-Notched Characteristics Using Two Radiating Stubs

In this letter, a new microstrip antenna for UWB applications is suggested. The antenna is able to filter both of the interference frequency bands of WiMAX and WLAN. The antenna consists of two radiating stubs, a partial ground, and a feed-line. In the configuration, by etching an inverted T- shaped slot on the ground plane, extra resonance is excited, thus broad impedance bandwidth can be obtained. The measured results exhibits that the antenna can cover the bandwidth from 2.7 to 13.0 GHz for VSWR≤ 2 excluding the rejected bands from 3.0 to 3.7 GHz and from 4.9 to 6.0 GHz.