THE DEVELOPMENT OF A LOW NOISE 230 GHZ SIS RECEIVER IN NAGOYA UNIVERSITY

K. C. XIAO; H. OGAWA; Y. FUKUI; H. SUZUKI

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THE DEVELOPMENT OF A LOW NOISE 230 GHZ SIS RECEIVER IN NAGOYA UNIVERSITY KCI 등재 SCOPUS

K. C. XIAO, H. OGAWA, Y. FUKUI, H. SUZUKI

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URLhttps://db.koreascholar.com/Article/Detail/387950

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천문학회지 (Journal of The Korean Astronomical Society)

제29권 제S호 (1996.12)
pp.413-414

한국천문학회 (Korean Astronomical Society)

초록

A 230 GHz SIS tunnel junction receiver has been being developed for radio astronomy in Nagoya University. In this heterodyne receiver, we use a $\~$ 수식 이미지1/3 reduced hight rectangular waveguide SIS mixer with two tuning elements as front end. The mixer block with SIS junction was cooled to 4K with a closed cycle He-gas refrigerator. So far, a double sideband receiver noise temperature lower than l00K in 222-237 GHz is obtained. The receiver exhibits a best DSB noise temperature of 69K at 236 GHz as well as 228 GHz.

키워드

SIS junction DSB noise temperature

저자

K. C. XIAO(Department of Astrophysics, Nagoya University)
H. OGAWA(Department of Astrophysics, Nagoya University)
Y. FUKUI(Department of Astrophysics, Nagoya University)
H. SUZUKI(Fujitsu Laboratories Ltd., Fujitsu Limited)

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