Microelectromechanical magnetometer
First Claim
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1. An apparatus, comprising:
- a substrate;
a MEM device including a comb capacitor and a magnetic element physically connected to one electrode of said comb capacitor, said magnetic element capable of moving said one electrode in a manner that alters a capacitance of said comb capacitor; and
at least one spring physically connecting said magnetic element to said substrate.
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Abstract
An apparatus comprising a substrate and a MEM device. The MEM includes a comb capacitor and a magnetic element physically connected to one electrode of the comb capacitor. The magnetic element is capable of moving the one electrode in a manner that alters a capacitance of the comb capacitor. The apparatus also includes at least one spring physically connecting the magnetic element to the substrate.
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Citations
20 Claims
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1. An apparatus, comprising:
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a substrate;
a MEM device including a comb capacitor and a magnetic element physically connected to one electrode of said comb capacitor, said magnetic element capable of moving said one electrode in a manner that alters a capacitance of said comb capacitor; and
at least one spring physically connecting said magnetic element to said substrate. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9)
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5. The apparatus of claim 5, wherein said comb capacitor further comprises a second fixed electrode having second fixed fingers projecting from a second fixed surface that opposes a second surface of said one electrode, said second surface having fingers that interdigitate with said second fixed fingers.
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10. A method of use, comprising:
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placing an apparatus in a magnetic field, where said apparatus comprises a MEM device having a comb capacitor, a magnetic element physically connected to one electrode of said comb capacitor and at least one spring physically connecting said magnetic element to a substrate of said apparatus; and
changing said magnetic field thereby causing said magnetic element to move said one electrode in a manner that alters a capacitance of said comb capacitor. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of manufacture, comprising,
etching a substrate to simultaneously form a comb capacitor and a spring physically connected to said comb capacitor; - and
physically connecting a magnetic element to one electrode of said comb capacitor, said magnetic element configured to move said one electrode to alter a capacitance of said comb capacitor. - View Dependent Claims (18, 19, 20)
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Specification