Superconducting quantum interference device (SQUID) is a sensitive detector of magnetic flux signals. Up to now, the main application of SQUIDs has been measurements of magnetic flux signals in the frequency range from near DC to several MHz. Recently, cryogenic low-noise radio-frequency (RF) amplifiers based on DC SQUID are under development aiming to detect RF signals with sensitivity approaching quantum limit. In this paper, we review the recent progress of cryogenic low-noise RF amplifiers based on SQUID technology.
목차
Abstract 1. INTRODUCTION 2. BASIC PRINCIPLE OF SQUID RF AMPLIFIER 2.1. Configuration of SQUID RF Amplifier 2.2. Performance parameters of SQUID RF Amplifier 3. SEVERAL MSA DEVELOPMENTS 3.1. University of California at Berkeley (UC Berkeley) 3.2. Syracuse University 3.3. National Institute of Standards and Technology(NIST) 4. SLUG AMPLIFER 4.1. SLUG RF amplifier at University of Wisconsin 5. FUTURE TREND OF DEVELOPMENT 5.1. Amplifier gain at high frequencies 5.2. Noise temperature 6. SUMMARY REFERENCES