High gain filtering antenna for WCDMA application

Abstract

In this paper, a high gain filtering antenna for WCDMA application, modified from our previous work, is presented. The proposed antenna is mainly composed of a driven patch and a stacked patch, with its entire height being 0.08λ. With the same filtering performance and radiation performance as our previous work, the proposed filtering antenna exhibits a narrower bandwidth (1.92-2.17 GHz) to fit with WCDMA application. This antenna has an impedance bandwidth of 13.6% for S11 <; -15 dB, which is less about 6% than our previous work. Samely, an average gain of 9.7 dBi in passband with an out-of-band suppression more than 21 dB can also be achieved in implemented antenna.