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Magnetic-field sensing coil embedded in ceramic for measuring ambient magnetic field

United States Patent

February 10, 2004
View the Complete Patent at the US Patent & Trademark Office
Princeton Plasma Physics Laboratory - Visit the Office of Technology Transfer Website
A magnetic pick-up coil for measuring magnetic field with high specific sensitivity, optionally with an electrostatic shield (24), having coupling elements (22) with high winding packing ratio, oriented in multiple directions, and embedded in ceramic material for structural support and electrical insulation. Elements of the coil are constructed from green ceramic sheets (200) and metallic ink deposited on surfaces and in via holes of the ceramic sheets. The ceramic sheets and the metallic ink are co-fired to create a monolithic hard ceramic body (20) with metallized traces embedded in, and placed on exterior surfaces of, the hard ceramic body. The compact and rugged coil can be used in a variety of environments, including hostile conditions involving ultra-high vacuum, high temperatures, nuclear and optical radiation, chemical reactions, and physically demanding surroundings, occurring either individually or in combinations.
Takahashi; Hironori (Princeton, NJ)
09/ 301,064
April 28, 1999
FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with Government support under Contract No. DE-AC02-76CH03073 awarded by the Department of Energy. The Government has certain rights in this invention.