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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제32권 제8호
발행연도
2008.11
수록면
1,248 - 1,256 (9page)

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In this paper, basic characteristics of transmission line employing PPGM (periodically perforated ground metal) were investigated using theoretical and experimental analysis.According to the results, unlike the conventional PBG (photonic band gap) structures, the characteristic impedance of the transmission line employing PPGM structure showed a real value, which exhibited a very small dependency on frequency. The transmission line employing PPGM structure showed a loss (per quarter wave length) higher by 0.1 ∼0.2 ㏈ than the conventional microstrip line. According to the investigation of the dependency of RF characteristic on ground condition, the RF characteristic of the transmission line employing PPGM structure was hardly affected by the ground condition in the frequency lower than Ku band, but fairly affected in the frequency higher than Ku band, which indicated that coplanar waveguide employing PPGM structure was optimal for RF characteristic and reduction of size. Considering above results, impedance transformer was developed using coplanar waveguide with PPGM structure for the first time, and good RF characteristics were observed from the impedance transformer. In case that λ/4 impedance transformer with a center frequency of 9 ㎓ was fabricated for a impedance transformation from 20 to10 Ω, the line width and length were 20 and 500 ㎛, respectively, and its size was only 0.64 % of the impedance transformer fabricated with conventional microstrip lines. Above results indicate that the transmission line employing PPGM is a promising candidate for a development of matching and passive elements on MMIC.

목차

Abstract
1. 서론
2. 주기적 홀을 가지는 접지 금속막(PPGM)을 이용한 마이크로스트립 선로구조
3. 주기적 홀을 가지는 접지 금속막(PPGM)을 이용한 마이크로스트립선로구조의 기본특성
4. 코프레너형 PPGM 선로를 이용한 임피던스 변환기
5. 결론
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