Effects of radio frequency radiation on the dc SQUID
- 4 July 1994
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 65 (1), 100-102
- https://doi.org/10.1063/1.113046
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.Keywords
This publication has 4 references indexed in Scilit:
- Effect of RF interference on characteristics of DC SQUID systemIEEE Transactions on Applied Superconductivity, 1993
- Low-noise high-speed dc superconducting quantum interference device magnetometer with simplified feedback electronicsApplied Physics Letters, 1990
- Flicker (1/f) noise in tunnel junction dc SQUIDSJournal of Low Temperature Physics, 1983
- Principles and methods of low-frequency electric and magnetic measurements using an rf-biased point-contact superconducting deviceJournal of Low Temperature Physics, 1972