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학술지 Characteristics of a 60 GHz MMIC Mixer with an Open Stub Microstrip Line
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저자
이상흥, 임종원, 안호균, 장우진, 지홍구, 김해천, 남은수
발행일
201006
출처
Microwave and Optical Technology Letters, v.52 no.6, pp.1341-1345
ISSN
0895-2477
출판사
John Wiley & Sons
DOI
https://dx.doi.org/10.1002/mop.25191
협약과제
09MR6700, 테라헤르츠대역 전파 환경 및 무선 전송 플랫폼 기술 연구, 정태진
초록
In this article, 60 GHz MMIC down-conversion mixers for a 60 GHz communication system are designed and fabricated on-chip using a 0.12 μm GaAS PHEMT process technology with an fT of 78 GHz and fmax of 190 GHz. The characteristics of a 60 GHz monolithic cascode mixer with an open stub microstrip line are compared with those of a 60 GHz monolithic cascode mixer without an open stub microstrip line, which are integrated on-chip including matching and bias circuits. The 60 GHz monolithic cascode mixer with an open stub microstrip line measured at RF 60 GHz show a conversion gain of -16 dB, LO to RF isolation of 21.5 dB, and LO to IF isolation of 40.5 dB. Especially in the case of the mixer, the LO to IF isolation characteristic is much better than that of the 60 GHz monolithic cascode mixer without an open stub microstrip line. © 2010 Wiley Periodicals, Inc.
키워드
Microwave integrated circuits, Mixer, Pseudomorphic high electron mobility transistor
KSP 제안 키워드
60GHz communication, Cascode mixer, Communication system, Conversion gain, GaAs pHemt, High electron mobility transistor(HEMT), Microstrip Line, On-chip, RF isolation, bias circuit, down-conversion