POLYGON SLOT ANTENNA WITH A DUAL BAND-REJECT CHARACTERISTIC FOR WiMAX APPLICATIONS

In this letter, a novel design of broadband antenna with band-reject characteristic for WiMAX applications is proposed and studied. In this design, an antenna consists of a triangle and rectangle slots on the ground plane and a rectangle patch is to generate broadband operation of 10 dB return loss from 2.3 to 8 GHz (BW = 110.7%). Furthermore, insertion of two strips into the polygon slot can achieve the triple-band operation of 2.15-2.71, 3.17-3.81, and 5.03-6.32 GHz. It plays a role as a filter to eliminate the undesired band. The proposed antenna with a band-reject characteristic is calibrated for WiMAX application that covers the band from 2.4 to 2.7, 3.3 to 3.8, and 5.15 to 5.85 GHz. And, this antenna has advantages of good radiation characteristics, small size, and smooth antenna gain. Details of the proposed antenna configuration and experimental results are discussed. (c) 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 854-860, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24160