Squid sensor using auxiliary sensor
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United States of America Patent
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Aug 15, 2006
Grant Date -
Apr 28, 2005
app pub date -
Oct 27, 2003
filing date -
Nov 8, 2001
priority date (Note) -
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Abstract
A SQUID (Superconducting QUantum Interference Device) sensor using an auxiliary sensor, includes a SQUID sensing unit having a SQUID and a first feedback coil for creating a magnetic field at a periphery of the SQUID; an auxiliary sensor having a lower magnetic sensitivity and a higher operation range than the SQUID sensing unit; and a sensor reading unit for operating the SQUID sensing unit and the auxiliary sensor to read out a signal of the SQUID and at the same time, supplying the SQUID sensing unit with an offset magnetic field through the first feedback coil.
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