Edge Chamfered Novel Miniaturized Patch Antenna with U Slots for WLAN, WIMAX Applications

Abstract

In this paper, the design of a Wide band, compact, miniaturized patch antenna for WLAN, WIMAX applications is presented. The conventional patch antenna is designed to resonate at 2.785 GHz. The proposed rectangular patch is initially modified by chamfering the lower radiating edge (to make it much more compact). Further, the proposed antenna has two U shaped slots etched over the patch and a U shaped slot on the microstrip feed line. Besides this, a spiral resonator is also etched over its ground plane. This antenna has dual resonances one at 2.476 GHz and another at 2.54 GHz with a gain of 4.5 dB, 5.09 dB respectively. The percentage of miniaturization is found to be 27.38%, 20.89% for the two band of resonances.