과거 밀리미터파는 군사용이나 국간 중계와 같은 제한적인 고정 통신용으로 사용되어 왔다. 이러한 제한적인 활용의 원인은 표준의 부재로 인한 장비 호환성 부족, 전파의 직진성, 고가의 시스템 가격, 새로운 활용 분야 개척 미흡에 있다고 하겠다. 고정 통신 분야에서는 IEEE 802.16에서 표준화가 완료되고, 밀리미터파 차량 충돌 방지 레이다, 밀리미터파 WPAN 등 새로운 활용 분야가 개척됨에 따라 시스템의 가격이 밀리미터파 이용 활성화의 관건이 되고 있으며, 특히 소형화에 의한 개인용 기기에의 응용을 위한 연구가 활발히 진행되고 있다. 본 논문에서는 적층 구조의 유전체 기판을 사용하는 LTCC 기술을 밀리미터파대에 적용하여 밀리미터파 송수신 시스템을 저가격화, 소형화하는 기술의 개발 현황에 대해 기술하였다.
KSP Keywords
IEEE 802.1
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