08ZR1200, Development of next generation radio sensor technology using artificial electromagnetic structures,
Choi Jae Ick
Abstract
1. 2011 년까지 파장의 1/10 이하의 세계 최고의 균질(homogeneous) 성능을 갖는 인공전자기 구조를 이용한 차세대 전파 센서 개발과제의 1 단계 연구로서 파장 이하의 분해능을 갖는 근거리 이미징용 전파렌즈와 메타전파렌즈를 적용한 소형 고지향성 안테나 및 비자성 인공전자기 구조를 이용한 MRI 이미징 센서에 대한 연구를 수행하였음. 2. 근거리 이미징용 전파렌즈에서는 굴절률 -1 인 메타물질 구현하여 파장의 1/8 에 해당하는 해상도 획득함(렌즈없을 경우 파장의 1/3) 3. 0.5 이하의 굴절률과 임피던스 매칭된 안테나 레이돔 및 기지국 안테나용 메타물질을 안테나에 사용하여 최대이득 ≈ 15.9dB, 3dB 대역폭 ≈ 90MHz, 빔폭≈60o (H-plane), 14o(E-plane) 인 결과 얻음 4. 비자성 인공전자기 구조를 이용한 MRI 이미징 센서에서는 상용 수신기와 감도가 비슷한 저가형 자기장 검출기와 해상도 향상을 위한 인체부착형 자기장 증폭기를 개발하였음
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