Journal of The Institute of Information and Telecommunication Facilities Engineering (정보통신설비학회논문지)

Korea Institute of Information and Telecommunication Facilities Engineering (한국정보통신설비학회)
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Analysis of Wide Band Annular Ring Microstrip Patch Antenna

광대역 Annular Ring 마이크로스트립 패치 안테나의 해석

  • 서철헌 (숭실대학교 정보통신전자공학부) ;
  • 김형석 (중앙대학교 전자전기공학부)
  • Published : 2003.02.01
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Abstract

This paper presents the analysis of the mode characteristics of an annular ring microstrip patch antenna for circular polarization with attachment mode using method of moments in the spectral domain. For a probe excitation, the input impedance are obtained by using the single mode approximation for both the $TM_{11}$ and $TM_{12}$ modes and compared with those by Vector Hankel Transform. While the $TM_{11}$ mode has a high Q, it is a poor radiating mode; the $TM_{12}$ mode is more suitable for antenna applications. It is also shown that the bandwidth of the $TM_{12}$ mode is wider than that of the $TM_{11}$ mode in terms of axial ratio for circular polarizatio

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