Phononic comb enhanced capacitive inductive sensor

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United States of America Patent

PATENT NO 11575348
SERIAL NO

17347403

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Abstract

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A method and apparatus for enhancing the sensitivity of an oscillator circuit functioning, in use, to sense changes in the inductance of inductive elements and/or the capacitance of capacitive elements coupled to said oscillator circuit. The oscillator circuit is coupled to a nonlinear resonator for generating a comb of frequencies in response to a drive frequency generated by the oscillator circuit, the comb of frequencies having at least a portion of at least one tooth for which an absolute value of the first derivative of the drive frequency with respect to said comb frequency is less than 1.0, comparing an output of the nonlinear resonator with an output of a reference oscillator for detecting changes in the drive signal of the oscillator circuit as enhanced by the slope of the at least a portion of at least one tooth for which the absolute value of the first derivative of the drive frequency with respect to said comb frequency is less than 1.0.

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Patent Owner(s)

Patent OwnerAddress
HRL LABORATORIES LLC3011 MALIBU CANYON ROAD MALIBU CA 90265-4797

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kubena, Randall L Oak Park, US 91 1455
Song, Hyok J Oak Park, US 24 422
Wall, Walter S Calabasas, US 43 156

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