Miniaturization of UWB Patch Antenna with Band Notch Characteristics

In this paper, a single feed ultra wide-band micro-strip patch antenna with band notched characteristics is presented. The antenna presented here rejects Wi-max band to remove the interference from 3.3 to 4.3 GHz and antenna operates in the frequency range of 3-12 GHz. The antenna is designed on FR-4 substrate with thickness of 1.6 mm. The antenna has a compact structure of size 15.2*13.6 mm2. The antenna is simulated on HFSS software based on electromagnetic (EM) simulation. The antenna is investigated in terms of frequency domain characteristics. Notch is achieved by inserting rectangular slots on patch & notch position is achieved by varying the size & position of rectangular slot. Partial ground plane along with stair case design is used for patch. The antenna is achieved with maximum gain of 3.5 dBi.