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Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise

United States Patent

November 28, 2000
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
An asymmetric planar gradiometer for use in making biomagnetic measurements. The gradiometer is formed from a magnetometer which is inductively-coupled to the smaller of two connected loops patterned in a superconducting film which form a flux transformer. The magnetometer is based on a SQUID formed from a high T.sub.c superconducting material. The flux transformer and magnetometer may be formed on separate substrates, allowing the baseline to be increased relative to presently available devices.
Dantsker; Eugene (Torrance, CA), Clarke; John (Berkeley, CA)
The Regents of the University of California (Oakland, CA)
09/ 069,707
April 29, 1998
This invention was made with U.S. Government support under contract number DE-AC03-76SF00098 between the U.S. Department of Energy and the University of California for the operation of Lawrence Berkeley Laboratory. The U.S. Government may have certain rights in this invention.