Small circularly polarised folded patch antenna

被引：19
|
作者：
Wong, H [1 ]
Lau, PY [1 ]
Mak, KM [1 ]
Luk, KM [1 ]
机构：
[1] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
来源：
ELECTRONICS LETTERS | 2005年 / 41卷 / 25期
关键词：
D O I：
10.1049/el:20053677
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A small circularly polarised (CP) patch antenna with dual T-shaped probe feeds is presented. The patch is folded like a cap to generate a CP wave as well as to reduce the size of the antenna. The proposed antenna is operated at the centre frequency of 2.28 GHz with circular polatisation. The impedance bandwidth (SWR < 2) is 21.8% from 2 to 2.49 GHz and the axial ratio bandwidth (AR < 3 dB) is 3.5%. The measured gain is around 7.5 dBi. The antenna shows a good CP performance with a symmetric radiation pattern. The total area of reduction is 54% in comparison with the conventional half-wave patch antenna.
引用
收藏
页码：1363 / 1365
页数：3
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