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US 11,641,168 B2Granted
Parametric resonator for electrical transduction
AssigneeGeorgia Tech Research Corporation
InventorsFahrettin Levent Degertekin, Sarp Satir, Sushruta Surappa
Life of this patent
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Abstract
A parametric resonator can be driven by varying a parameter of a modulated capacitor or other externally powered type device to achieve transduction. Conventionally, externally powered type devices generally require an external power source or a static charge to achieve transduction. By pumping the parameter of the device at a frequency that is about twice the resonance frequency, and an amplitude that is above a threshold, however parametric resonance can be generated and sustained without requiring an external power source or charge to be applied to the device.
Claims20
A parametric resonator comprising:
- an electronic device having an electrical parameter configured to oscillate at a pump frequency in response to an applied force to the electronic device;
- wherein, when the pump frequency is twice a resonance frequency of the parametric resonator, the parametric resonator is configured to:
- generate parametric resonance in response to the oscillating electrical parameter;
- and
- sustain an electrical signal responsive to varying the electrical parameter of the electronic device without requiring a permanent charge or a voltage applied to the electronic device;
- wherein the electronic device is a capacitor having the electrical parameter of capacitance;
- wherein the capacitance is variable in response to the applied force;
- wherein, when the pump frequency is twice a resonance frequency of the parametric resonator, the parametric resonator is further configured to sustain the electrical signal responsive to varying the capacitance of the capacitor between a first capacitance that is equal to an average capacitance plus a change in capacitance and a second capacitance that is equal to the average capacitance minus the change in capacitance;
- and
- wherein the change in capacitance is equal to or greater than about twice the average capacitance divided by a quality factor of the parametric resonator.
7 more elements
A parametric resonator system comprising:
- an electronic component of an RLC circuit;
- wherein the RLC circuit has a resonance frequency;
- wherein the electronic component has an electrical parameter that oscillates at a pump frequency in response to an external force;
- wherein, when the pump frequency is twice the resonance frequency of the RLC circuit, the parametric resonator system is configured to self-sustain an oscillating electrical signal in response solely to varying the electrical parameter;
- wherein the electronic component is a capacitor having the electrical parameter of capacitance;
- wherein the capacitance is variable in response to the external force;
- when the pump frequency is twice the resonance frequency of the RLC circuit, the parametric resonator system is further configured to sustain the oscillating electrical signal responsive to varying the capacitance of the capacitor between a first capacitance that is equal to an average capacitance plus a change in capacitance and a second capacitance that is equal to the average capacitance minus the change in capacitance;
- and
- wherein the change in capacitance is equal to or greater than about twice the average capacitance divided by a quality factor of the parametric resonator system.
6 more elements
A method for electrical transduction comprising:
- generating parametric resonance in a parametric resonator in response to an applied force to an electronic component of the parametric resonator oscillating an electrical parameter of the electronic component of the parametric resonator;
- and
- sustaining the parametric resonance in the parametric resonator solely by the applied force oscillating the electrical parameter of the electronic component;
- wherein a transmitter transmitting the applied force to the electronic component is in wireless communication with the electronic component;
- wherein the oscillating electrical parameter has a pump frequency that is twice a resonance frequency of the parametric resonator;
- wherein the electronic component is a capacitor having the electrical parameter of capacitance;
- wherein the capacitance is variable in response to the applied force;
- wherein the method further comprises sustaining the parametric resonance responsive to varying the capacitance of the capacitor between a first capacitance that is equal to an average capacitance plus a change in capacitance and a second capacitance that is equal to the average capacitance minus the change in capacitance;
- and
- wherein the change in capacitance is equal to or greater than about twice the average capacitance divided by a quality factor of the parametric resonator.
7 more elements
A parametric resonator comprising a capacitive component having a capacitance that varies in response to an external force;
- wherein the parametric resonator is configured to sustain an oscillating electrical signal in response to varying the capacitance of the capacitive component with the application of an acoustic signal to the capacitive component, without requiring an electrical power source;
- wherein the acoustic signal varies the capacitance of the capacitive component between a first capacitance that is equal to an average capacitance plus a change in capacitance and a second capacitance that is equal to the average capacitance minus the change in capacitance;
- and
- wherein the change in capacitance is equal to or greater than about twice the average capacitance divided by a quality factor of the capacitive component.
1 more element
Dependencies are inferred from the claim text.