한국해양대학교

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센더스트를 이용한 적층형 전파흡수체의 개발

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dc.contributor.author 류재민 -
dc.date.accessioned 2017-02-22T06:24:05Z -
dc.date.available 2017-02-22T06:24:05Z -
dc.date.issued 2007 -
dc.date.submitted 56850-02-09 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175286 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/9472 -
dc.description.abstract The remarkable advance of modern electronics and communication technology has made high frequency conversion, miniaturization, digitalization. However, EM (Electromagnetic) wave environments have become more complicate and difficult to control. Therefore, international organizations such as the ANSI (American National Standards Institute), FCC (Federal Communications Commission), and CISPR (the Committee International Special des Perturbations Radioelectrique), etc. have provided international or local standards for the EM wave environments and for the EMC (Electromagnetic Compatibility). EM wave absorbers are used to protect electronic devices, such as personal communications and wireless LAN systems from unwanted EM wave radiations. In order to develop a more advanced EM wave absorbers, it is important to develop new materials for EM wave absorbers instead of soft and hard magnetic materials, such as Mn-Zn, Ni-Zn, Ba, and Sr ferrites which have been used conventionally. In this thesis, the experiments for two kinds of materials. First, Multi-layer EM wave absorbers were studied using Sendust. As a result, the bandwidth of the Multi-layer EM wave absorbers with the thickness of 4 mm using Sendust was obtained more than 10 dB in S-Band. Secondly, the mixing effects of Sendust and on Multi-layer EM wave absorbers were studied, where it was confirmed that the bandwidth of the multi-layer EM wave absorbers inter-mixing with the thickness of 3 mm has broadened compared with non-mixed Multi-layer Sendust EM wave absorbers in S-Band. -
dc.description.tableofcontents 제 1 장 서론 = 1 1.1 연구 배경 = 1 1.2 연구 목적 = 3 제 2 장 전파흡수체 이론 = 5 2.1 서론 = 5 2.2 전파흡수체의 재료 = 8 2.3 전파흡수체의 종류 = 10 2.4 전파흡수체에 요구되는 특성 = 15 2.5 전파흡수체의 해석 이론 = 17 2.5.1 단층형 전파흡수체의 해석 이론 = 17 2.5.2 적층형 전파흡수체의 해석 이론 = 19 2.6 전파흡수체의 분포정수회로화 = 22 2.6.1 파동방정식(HelmholtzEquation) = 22 2.6.2 분포정수회로화 = 26 2.7 전파흡수체의 반사계수 측정 방법 = 32 2.8 재료정수 측정법 = 34 2.8.1 사용된 Sample Holder = 34 2.8.2 재료정수 계산방법 = 35 제 3 장 전파흡수체의 제작 및 특성평가 = 39 3.1 전파흡수체의 설계 및 제작 = 39 3.2 센더스트의 성분비에 따른 전파흡수능 및 재료정수 측정 = 40 3.2.1 센더스트의 성분비에 따른 전파흡수능 = 40 3.2.2 재료정수 측정 = 43 3.3 센더스트를 이용한 적층형 전파흡수체 = 46 3.3.1 센더스트를 이용한 적층형 전파흡수체 설계 및 제작 = 46 3.3.2 전파흡수능 평가 및 분석 = 47 3.4 수산화알루미늄을 첨가한 적층형 전파흡수체 = 50 3.4.1 수산화알루미늄을 첨가한 적층형 전파흡수체의 설계 및 제작 = 50 3.4.2 전파흡수능 평가 및 분석 = 51 제 4 장 결론 = 54 참고문헌 = 56 본 논문과 관련된 발표논문 = 58 -
dc.language kor -
dc.publisher 한국해양대학교 대학원 -
dc.title 센더스트를 이용한 적층형 전파흡수체의 개발 -
dc.title.alternative Development of Multi-layer Electromagnetic Wave Absorbers Using Sendust -
dc.type Thesis -
dc.date.awarded 2007-02 -
dc.contributor.alternativeName Ryu -
dc.contributor.alternativeName Jae-Min -
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전파공학과 > Thesis
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