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2 July 1994 Effects of radio frequency radiation on the dc SQUID
Roger H. Koch, Vittorio Foglietti, James R. Rozen, K. G. Stawiasz, M. B. Ketchen, Daniel K. Lathrop, Jonathan Z. Sun, William J. Gallagher
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Proceedings Volume 2160, Superconductive Devices and Circuits; (1994) https://doi.org/10.1117/12.181000
Event: OE/LASE '94, 1994, Los Angeles, CA, United States
Abstract
The effects of radio frequency radiation on the dc SQUID are examined. Simulations show how the shape of the SQUID transfer characteristic is distorted by radio frequency interference (RFI). How this affects three commonly used SQUID modulation methods is discussed, and the results explain why we experimentally observe the bias current reversing readout method to be the least susceptible to RFI. The commonly seen increase in the low frequency flux noise power spectrum of dc SQUIDs in unshielded environments is also explained.
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Roger H. Koch, Vittorio Foglietti, James R. Rozen, K. G. Stawiasz, M. B. Ketchen, Daniel K. Lathrop, Jonathan Z. Sun, and William J. Gallagher "Effects of radio frequency radiation on the dc SQUID", Proc. SPIE 2160, Superconductive Devices and Circuits, (2 July 1994); https://doi.org/10.1117/12.181000
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KEYWORDS
Electromagnetic coupling
Modulation
Sun
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