National Changhua University of Education Institutional Repository : Item 987654321/10937

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NCUEIR > College of Engineering > Department and Graduate Institute of Electronic Engineering > Periodical Articles > Item 987654321/10937

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/10937

Title:	Dual-frequency circularly polarized annular-ring microstrip antenna
Authors:	Row, Jeen-Sheen
Contributors:	電機工程學系
Date:	2004-02
Issue Date:	2012-06-05T01:59:22Z
Publisher:	IEEE
Abstract:	The novel design of the circular polarisation (CP) for an annular-ring antenna operated at its TM11 and TM12 modes is presented. The CP radiations of the proposed design are achieved by placing an L-shaped strip connected to two orthogonal sides of the inner boundary of the annular patch. The dual-frequency CP operations are excited by a single probefeed, and no additional 90 phase shifter and impedance-transformer circuit are required. A prototype of the proposed design was implemented and measured. Measured results show that broadside radiation patterns with good CP characteristics are obtained at the two operating resonant modes. Agreement between measured and numerical results is satisfactory.
Relation:	Electronics Letters, 40(3): 153-154
Appears in Collections:	[Department and Graduate Institute of Electronic Engineering] Periodical Articles

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