Compact helical antenna with small ground fed by spiral-shaped microstrip line

被引：3
|
作者：
Liu, Longsheng [1 ]
Li, Yue [1 ]
Zhang, Zhijun [1 ]
Feng, Zhenghe [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Microwave & Digital Commun, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
来源：
ELECTRONICS LETTERS | 2014年 / 50卷 / 05期
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Microstrip lines;
D O I：
10.1049/el.2013.4021
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 compact helical antenna with a small ground is proposed for 5.2/5.8 GHz WLAN applications. The proposed antenna can be easily mounted in the space-limited systems. Good impedance matching is achieved by a spiral-shaped microstrip line feed structure. Relatively uniform current along the helix is observed owing to the travelling-wave current on the feed structure, which contributes to high-gain performance even with a small ground. The measured 3 dB axial ratio bandwidth and impedance bandwidth for S-11 <= - 10 dB overlap over 5-6 GHz, whereas the realised gain of about 13-14 dBic is achieved over the 5.2/5.8 GHz WLAN band.
引用
收藏
页码：336 / 337
页数：2
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