標題: | A novel dual circularly polarized microstrip antenna |
作者: | Hong, Wanchu Chenq, Chin-Ting Lin, Yu-De Kitazawa, Toshihide 電信工程研究所 Institute of Communications Engineering |
關鍵字: | microstrip antenna;circular polarization;annular ring microstrip;branch-line hybrid |
公開日期: | 2006 |
摘要: | In this paper, we propose a novel design of dual circularly polarized microstrip antenna of the cogwheel-like annular ring structure. The microstrip sector stubs are added periodically in the outer and inner edges of the microstrip annular ring and an additional microstrip line as a diameter is also placed across the inner circle to enhance performance of the axial ratio. When operated in TM11 mode, this cogwheel-like microstrip annular ring antenna has a relatively wider bandwidth and a relatively smaller size than those of the traditional microstrip annular ring antenna. The three-wire transmission line and branch-line hybrid is employed as the feeding network to excite the righted-handed or left-handed direction of circular polarization. |
URI: | http://hdl.handle.net/11536/135187 |
ISBN: | 978-2-9600551-6-0 |
期刊: | 2006 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-4 |
起始頁: | 1267 |
結束頁: | + |
顯示於類別: | 會議論文 |