Design of a compact bowtie antenna with fiveband reconfigurable characteristics

A novel multiband reconfigurable antenna is proposed in this paper.The antenna has a compact planar bowtie structure of 35.0 mm×38.0 mm×1.6 mm and mainly consists of Ushape strip，rectangular parasitic elements and ground plane.By tuning the length of feed and selecting parasitic elements，partial structure and current distributions of the proposed antenna can be changed and the different operating frequencies are obtained.The proposed antenna can be switched among the bands of 1.94～2.22 GHz，2.32～2.54 GHz，3.08～3.78 GHz，3.63～4.83 GHz and 4.82～6.85 GHz，which cover major bands of wireless communication systems，and all modes have nearly omnidirectional radiation patterns and relatively high gains.