volume | PIER Journals

Abstract

A compact differential-fed ultra-wideband (UWB) antenna with single band-notched characteristicis proposed in this paper. The antenna consists of a ground plane etched with an octagonal groove and two symmetrical hexagonal radiating patches. Return loss and isolation of the antenna can be effectively reduced by loading a rectangular stub on the ground plane and etching a semi-circular groove on the radiation patch. In order to achieve a controllable single band-notched characteristic, two pairs of quarter-wavelength stubsare introduced into the grounding plane. The antenna has lower cross polarization and stable gains than conventional single feed antennas. The measured impedance bandwidth with S₁₁ ≤ -10 dB is 114% from 3 GHz to 11 GHz, and the notch characteristic is realized in the 7.2-8.4 GHz band.

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Dr. Jingjing Zhang

Dr. Tingting Chen

Dr. Lu Hua

Dr. Weijiang Wang