MEMS 기술을 이용한 저 손실 전송선로와 LPF의 공정에 관한 연구

Study on the Fabrication of the Low Loss Transmission Line and LPF using MEMS Technology

  • 발행 : 2003.12.01

초록

본 논문에서는 MEMS(Micro Electro Mechanical System) 기술을 이용하여 Microstrip 구조의 저 손실 전송라인을 제작하고, 제작되어진 전송라인을 이용하여 Ka-band 대역의 저역통과 여파기(Low Pass Filter)를 제작하였다. 저 손실 전송라인의 제작은 surface micromachining 공정기법을 사용하고 저 손실 및 넓은 범위의 특성 임피던스 값을 얻기 위하여 신호선을 유전체 지지대를 이용하여 공기 중으로 위치시켜 substrate에 의한 손실을 최소화시켰다. 제작된 전송선로를 이용하여 LPF에 적용하면 유전체 손실의 최소화로 인한 insertion loss를 줄일 수 있는 장점이 있다는 것을 확인하였다. 또한 LPF를 다른 능동소자와 함께 구현하기 위하여서는 소형화가 필수적인데 LPF의 소형화를 위하여 접지면 부분에 slot을 형성하여 제작하였으며 제작된 결과를 그렇지 않은 경우와 서로 비교 분석하였다.

In this paper, we fabricated new GaAs-based dielectric-supported air gapped microstriplines(DAMLs) using the surface MEMS and the LPF for Ka-band using the fabricated DAMLs. We elevated the signal lines from the substrate, in order to reduce the substrate dielectric loss and obtain low losses at millimeter-wave frequency band with wide impedance range. We fabricated LPF with DAMLs for Ka-band. Due to reducing the dielectric loss of DAMLs, the insertion loss of LPF can be reduced. Miniature is essential to integrate LPF with active devices, so that we fabricated LPF with the slot on the ground to reduce the size of the LPF. We compared a characteristic to LPF with the slot and LPF without the slot.

키워드

참고문헌

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