Bandwidth enhancement of circularly polarized microstrip patch antenna using multiple L-shaped probe feeds

被引：33

作者：

Lo, WK ^{[1
]}

Chan, CH ^{[1
]}

Luk, KM ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Wireless Commun Res Ctr, Kowloon, Hong Kong, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2004年 / 42卷 / 04期

关键词：

microstrip antenna; circular polarization; L-shaped probe feed; impedance and axial-ratio bandwidth enhancement;

D O I：

10.1002/mop.20272

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：

Impedance-bandwidth enhancement of microstrip antennas using an L-shaped probe feed has previously been demonstrated. In this paper, axial-ratio bandwidth enhancement is achieved for circularly polarized (CP) microstrip patch antenna using dual and four L-shaped probe feeds. By controlling the excitation phase and angular orientation of the horizontal portion of each L-probe, circular polarization can be generated with wide axial-ratio bandwidth by exciting the circular patch. In the dual L-shaped probe case, the impedance and axial-ratio bandwidth are 42% and 27.23%, respectively. On the other hand, for the four L-shaped probes case, both of these figures increase to 45%. (C) 2004 Wiley Periodicals, Inc.

引用

页码：263 / 265

页数：3

共 7 条

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Chiba T., 1982, INT S ANT PROP, P285

[2]

Haneighi M., 1988, MICROSTRIP ANTENNA D, P313

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