Optically powered and controlled non-foster circuit
First Claim
1. An optically powered and controlled NFC module comprising an NFC, a photovoltaic cell that powers the NFC from electromagnetic waves provided to the NFC module, and a separate means to control the NFC when the NFC is powered on using electromagnetic waves provided to the NFC module.
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Accused Products
Abstract
This invention is the Optically Powered and Controlled Non-Foster Circuit (OPCNFC) that is electrically floating; i.e., it does not have any metallic electrical/conductive connection to a power supply, ground, or control signal. Rather power and control signals are applied to the OPCNFC using optical energy. The Non-Foster Circuit (NFC) synthesizes negative inductance, negative capacitance, and/or negative resistance between metallic patches disposed in an array of an Artificial Impedance Surface (AIS).
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Citations
20 Claims
- 1. An optically powered and controlled NFC module comprising an NFC, a photovoltaic cell that powers the NFC from electromagnetic waves provided to the NFC module, and a separate means to control the NFC when the NFC is powered on using electromagnetic waves provided to the NFC module.
- 10. An optically powered non-Foster Circuit (NFC) module comprising an NFC and a photovoltaic cell that both powers the NFC on and off and also varies parameters of the NFC, when the NFC is powered on, from electromagnetic waves provided to the NFC module.
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16. An optically powered Artificial Impedance Surface (AIS) comprising:
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a. a substrate with a two dimensional array of electrically conductive patches disposed thereon; b. a plurality of non-Foster Circuits (NFCs) coupled with neighboring patches in said two dimensional array of patches disposed on said substrate; c. a plurality of photovoltaic cells coupled to the NFCs, the photovoltaic cells supplying (i) electrical energy to the NFCs and (ii) control signals for controlling said NFCs using modulated electromagnetic energy impinging the AIS or using modulated electromagnetic energy from a light source associated with said optically powered Artificial Impedance Surface (AIS), the electromagnetic energy being modulated with said control signals. - View Dependent Claims (17, 18, 19)
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20. An optically powered and controlled NFC module comprising an NFC, a photovoltaic cell that powers the NFC from electromagnetic waves provided to the NFC module, a separate means to control the NFC using electromagnetic waves provided to the NFC module, wherein a first light source supplies power to the NFC, a second light source provides information to control the NFC and wherein the second light source transmits the control signals over a separate waveguide, and wherein the control signals are then demodulated, demultiplexed, and converted into analog control signals.
Specification