Quadrifilar Helix Antenna With Mechanically Tunable Compact Geometry

摘要：

We have studied a quadrifilar helix antenna(QHA) which was cut into three parts. By introducing a gap between the lower two parts of the QHA, we can adjust the resonant frequency because of a distributed reactance has been introduced around the gap. When the overlapped part is long, the resonant frequency will become lower than when the overlapped part is short. So we can vary the resonant frequency mechanically by varying the length of the overlapped part Simulated and measured results were used to demonstrate that the resonant frequency was changed form 1.5GHz to 1.62GHZ. If we increase the width of the gap, the resonant frequency will change more obviously.

关键词： Gap quadiifilar heHx antenna tunable antenna distributed reactance

作者: Nan Gao Shaobin Liu Yinsheng Wei Zhaoyang Dai

作者单位: Nanjing University of Aeronautics and Astronautics No.29 Yudao Street Nanjing, Jiangsu 210016 China

会议类型: 国际会议

会议名称: 2010 International Conference on Microwave and Millimeter Wave Technology(2010国际微波与毫米波技术会议 ICMMT2010)

会议地点: 成都

会议语种:英文

页码: 294-296

在线出版日期: 2010-05-08（万方平台首次上网日期，不代表论文的发表时间）