System and Method for Wireless Power Transfer in Implantable Medical Devices
First Claim
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1. A system for energy transfer between devices, the system comprising:
- a transmitting unit having a transmitting antenna circuit having a first resonant frequency and a high quality factor, wherein the transmitting antenna circuit generates an electromagnetic field for wireless transfer of power and periodically generates a modulated time-varying signal for the transfer of data;
a receiving unit wirelessly coupled to the transmitting unit, the receiving unit having a receiving antenna circuit having a second resonant frequency and a high quality factor, wherein the receiving antenna circuit detects the electromagnetic field generated by the transmitting unit and generates an induced electric current, and further detects the modulated time-varying signal periodically generated by the transmitting unit; and
,a load coupled to the receiving unit, wherein the induced electric current powers the load, further wherein the load includes a demodulation circuit for demodulating the time-varying signal received by the receiving unit.
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Abstract
A system and method for energy transfer between a transmitting unit and a receiving unit, the transmitting unit having a transmitting antenna circuit having a first resonant frequency and a high quality factor.
196 Citations
20 Claims
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1. A system for energy transfer between devices, the system comprising:
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a transmitting unit having a transmitting antenna circuit having a first resonant frequency and a high quality factor, wherein the transmitting antenna circuit generates an electromagnetic field for wireless transfer of power and periodically generates a modulated time-varying signal for the transfer of data; a receiving unit wirelessly coupled to the transmitting unit, the receiving unit having a receiving antenna circuit having a second resonant frequency and a high quality factor, wherein the receiving antenna circuit detects the electromagnetic field generated by the transmitting unit and generates an induced electric current, and further detects the modulated time-varying signal periodically generated by the transmitting unit; and
,a load coupled to the receiving unit, wherein the induced electric current powers the load, further wherein the load includes a demodulation circuit for demodulating the time-varying signal received by the receiving unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for the providing electrical stimulation to human tissue, the system comprising:
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a first implantable device having a first resonator having a first resonant frequency and a high quality factor, wherein the first resonator generates an electromagnetic field for wireless transfer of power and periodically generates a modulated time-varying signal comprising of at least one set of control information; and a second implantable device having a second resonator inductively coupled to the first resonator, the second resonator having a second resonant frequency and a high quality factor, wherein the second resonator detects the electromagnetic field generated by the first resonator and generates an induced electric current, and detects the modulated time-varying signal comprising the at least one set of control information periodically generated by the first resonator; wherein the second implantable device includes a stimulus driver and at least one stimulating electrode for providing stimulation to human tissue based on the induced current generated by the second resonator. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A resonator for use in a system for energy transfer between a first device and a second device, the resonator comprising:
a coil having an operating frequency, the coil having at least one turn wherein the at least one turn has a plurality of layers further wherein each layer in the plurality of layers is electrically connected to the other layers in the plurality of layers. - View Dependent Claims (19, 20)
Specification