Y. H. Lee, K. K. Yu, J. M. Kim, S. K. Lee, Y. Chong, S. J. Oh, Y. K. Semertzidis
언어
영어(ENG)
URL
https://www.earticle.net/Article/A347950
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※ 학술발표대회집, 워크숍 자료집 중 4페이지 이내 논문은 '요약'만 제공되는 경우가 있으니, 구매 전에 간행물명, 페이지 수 확인 부탁 드립니다.
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원문정보
초록
영어
Low-noise amplifiers in the radio-frequency (RF) band based on the direct current (DC) superconducting quantum interference device (SQUID) can be used for quantum-limited measurements in precision physics experiments. For the prediction of peak-gain frequency of these amplifiers, we need a reliable design formula for the resonance frequency of the microstrip circuit. We improved the formula for the resonance frequency, determined by parameters of the DC SQUID and the input coil, and compared the design values with experimental values. The proposed formula showed much accurate results than the conventional formula. Minor deviation of the experimental results from the theory can be corrected by using the measured geometrical parameters of the input coil line.
목차
Abstract 1. INTRODUCTION 2. RESONANCE FREQUENCY MODEL 2.1. Basic configuration of SQUID RF amplifier 2.2. Resonance frequency of SQUID RF Amplifier 3. FABRICATION OF SQUIDS 3.1. Fabrication process of SQUID amplifiers 4. MEASUREMENT OF AMPLIFIER GAIN CURVE 4.1. Measurement setup 4.2. Measured gain curve 4.3. Dependence of resonance frequencies on the input coil parameters 5. CONCLUSIONS ACKNOWLEDGMENT REFERENCES
키워드
SQUIDradio-frequency amplifierresonance frequencyamplification gain
저자
Y. H. Lee [ Ultra-low Magnetic Field Team, Korea Research Institute of Standards and Science, Daejeon, Korea ]
Corresponding Author
K. K. Yu [ Ultra-low Magnetic Field Team, Korea Research Institute of Standards and Science, Daejeon, Korea ]
J. M. Kim [ Ultra-low Magnetic Field Team, Korea Research Institute of Standards and Science, Daejeon, Korea ]
S. K. Lee [ Ultra-low Magnetic Field Team, Korea Research Institute of Standards and Science, Daejeon, Korea ]
Y. Chong [ Quantum Information Team, Korea Research Institute of Standards and Science, Daejeon, Korea ]
S. J. Oh [ Center for Axion and Precision Physics Research, Institute for Basic Science, Daejeon, Korea ]
Y. K. Semertzidis [ Center for Axion and Precision Physics Research, Institute for Basic Science, Daejeon, Korea ]