The Proceeding of the Korean Institute of Electromagnetic Engineering and Science (한국전자파학회지:전자파기술)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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밀리미터파 MMIC의 개발 현황 및 전망

  • Published : 2000.04.01
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Abstract

Millimeter wave is expected as the unlimited useful frequency resources for the next generation wireless communication services. In the past, its usage was limited to the military warfare due to lack of millimeter devices. The development of GaAs pHEMT in 1980 and the progress in the processing technologies made the new consumer wireless services possible utilizing millimeter waves. Specially, most of passive components necessary for circuit design can be integrated with GaAs pHEMTs and this removes the difficulty in assembly unavoidable in hybrid design. InP based pHEMTs developed later possess all the properties of GaAs and it shows many advantages in higher frequency applications. In this paper, the status and trends of those devices and MMICs are presented and the future developing trends is also described.

밀리미터파는 새로운 민간 통신 서비스에 있어 무한한 주파수 자원의 보고로 볼 수 있다. 과거 이의 활용은 빈약한 부품기술로 인해 군무기체계 이외에는 도외시되었으나, '80년대 이후 GaAs pHEMT device 개발과 공정기술의 비약적인 발전으로 이를 민간 서 비스에 활용하는 것이 가능하게 되었다. 특히 GaAs p pHEMT 공정기술은 회로 설계시 필요한 대다수의 수동부품을 동시에 집적할 수 있어 hybrid 설계시 발생하는 조립의 문제점을 대다수 해결하고 있다. 이보다 늦게 시작된 InP를 기반으로한 pHEMT의 경우 GaAs의 앞서 언급한 속성을 그대로 지니며 더 높은 주파수에 적용 가능하여 밀리미터파 활용 전망 을 더욱 밝게 하고 있다. 본 논문에서는 이들의 개발 현황 및 이들을 이용한 집적회로의 현황을 살펴보고 향후 발전 방향을 예측하고자 한다.

Keywords

References

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