National Changhua University of Education Institutional Repository : Item 987654321/10989
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 6507/11669
造訪人次 : 30145372      線上人數 : 774
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 進階搜尋

請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/10989

題名: A reconfigurable design for bandwidth enhancement of circularly polarized slot antennas
作者: Hsieh, Tsung-Hsun;Row, Jeen-Sheen
貢獻者: 電機工程學系
關鍵詞: Slot antenna;Circular polarization;Reconfigurable antenna
日期: 2010-06
上傳時間: 2012-06-05T02:01:17Z
出版者: Wiley
摘要: A reconfigurable design is proposed to improve the circular polarization (CP) operating bandwidth of an annular-ring slot antenna fed with an L-shaped coupling strip. The design involves four voltage-controlled varactor diodes, which are placed below the slot and symmetrically distributed along the circumference of the slot. When all antenna dimensions remain constant, the CP operating frequency of the slot antenna can be decreased by varying dc voltage values. In addition, theses CP operating frequencies, which are corresponding to different dc voltage values can form a successive frequency band, and the available CP bandwidth is thus improved. Experimental results indicate that with the reconfigurable design, the 3-dB axial-ratio CP bandwidth can be increased by a factor of 4 for the annular-ring slot antenna with a reflector.
關聯: Microwave and Optical Technology Letters, 52(6): 1377-1380
顯示於類別:[電機工程學系] 期刊論文

文件中的檔案:

檔案 大小格式瀏覽次數
index.html0KbHTML643檢視/開啟


在NCUEIR中所有的資料項目都受到原著作權保護.

 

DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋