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Mode-Matching Analysis for Complex Antenna Factors of Circular Top-Hat EMI Monopole Antennas  

정운주 (한국항공우주산업주식회사 KT-1 사업 제품기술팀)
김기채 (영남대학교 전자정보공학부)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.10, 2003 , pp. 1024-1029 More about this Journal
Abstract
This paper presents the complex antenna factor of a top-hat EMI monopole antenna for measuring time domain electromagnetic fields. The approach is facilitated by adding a artificial parallel ground plane above the monopole antenna. This allows use of cylindrical harmonic field expansions in each of three subregions enclosed by the two ground plane. The results show that the complex antenna factor of the top-hat monopole antenna does not diverge at low frequencies. When compared with a monopole antenna, the top-hat monopole antenna has broadband characteristics. In order to verify the availability of the mode-matching method, the input impedance of the antenna were compared with experiments.
Keywords
EMI Monopole Antenna; Complex Antenna Factor; Mode-Matching Method;
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