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IEICE Transactions on Electronics
Vol. E96.C (2013) No. 3 pp. 320-325



Special Section on SQUID & its Applications

The voltage biased SQUID Bootstrap Circuit (SBC) was recently demonstrated for direct readout of SQUID signals. The SBC combines current- and voltage-feedbacks in one circuit to suppress the preamplifier noise. It offers not only a good noise performance, but also wide tolerance of SQUID parameters. Using SBC gradiometer, the bio-magnetic signals were successfully measured. In this paper, we overview the concept of SBC and its applications.

Copyright © 2013 The Institute of Electronics, Information and Communication Engineers

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