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Magnetic field response sensor for conductive mediaA magnetic field response sensor comprises an inductor placed at a fixed separation distance from a conductive surface to address the low RF transmissivity of conductive surfaces. The minimum distance for separation is determined by the sensor response. The inductor should be separated from the conductive surface so that the response amplitude exceeds noise level by a recommended 10 dB. An embodiment for closed cavity measurements comprises a capacitor internal to said cavity and an inductor mounted external to the cavity and at a fixed distance from the cavity's wall. An additional embodiment includes a closed cavity configuration wherein multiple sensors and corresponding antenna are positioned inside the cavity, with the antenna and inductors maintained at a fixed distance from the cavity's wall.
Document ID
20090042852
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Woodard, Stanley E.
Taylor, Bryant D.
Date Acquired
August 24, 2013
Publication Date
September 15, 2009
Subject Category
Electronics And Electrical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-7,589,525
Patent Application
US-Patent-Appl-SN-11/421,886

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