High Q factor sensor
First Claim
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1. A sensor for in vivo use within the body of a patient, comprising:
- a first substrate of polyimide, said first substrate having first and second sides;
a first inductor comprised of a conductive material and disposed on said first side of said first substrate;
a second substrate of polyimide, said second substrate having first and second sides;
a second inductor comprised of a conductive material and disposed on said first side of said second substrate;
said first and second substrates being disposed in parallel, spaced apart relation with said first sides of said substrates in apposition; and
an intermediate layer disposed between said first and second substrates and maintaining said first and second inductors in spaced-apart relation, said intermediate layer having an opening formed therein such that at least a portion of said first and second inductors are movable toward one another through said opening in response to a change in an external condition.
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Abstract
A sensor for wirelessly determining a physical property within a defined space comprises an electrical resonance and has a high quality factor Q. The quality factor Q is sufficiently high that a signal generated by the sensor can be received outside the defined space. The sensor may optimally have a dielectric coating.
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Citations
8 Claims
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1. A sensor for in vivo use within the body of a patient, comprising:
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a first substrate of polyimide, said first substrate having first and second sides; a first inductor comprised of a conductive material and disposed on said first side of said first substrate; a second substrate of polyimide, said second substrate having first and second sides; a second inductor comprised of a conductive material and disposed on said first side of said second substrate; said first and second substrates being disposed in parallel, spaced apart relation with said first sides of said substrates in apposition; and an intermediate layer disposed between said first and second substrates and maintaining said first and second inductors in spaced-apart relation, said intermediate layer having an opening formed therein such that at least a portion of said first and second inductors are movable toward one another through said opening in response to a change in an external condition. - View Dependent Claims (2, 3, 4)
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5. A sensor for in vivo use within the body of a patient, comprising:
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a first substrate of liquid crystal polymer, said first substrate having first and second sides; a first inductor comprised of a conductive material and disposed on said first side of said first substrate; a second substrate of liquid crystal polymer, said second substrate having first and second sides; a second inductor comprised of a conductive material and disposed on said first side of said second substrate; said first and second substrates being disposed in parallel, spaced apart relation with said first sides of said substrates in apposition; and an intermediate layer disposed between said first and second substrates and maintaining said first and second inductors in spaced-apart relation, said intermediate layer having an opening formed therein such that at least a portion of said first and second inductors are movable toward one another through said opening in response to a change in an external condition. - View Dependent Claims (6, 7, 8)
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Specification