Wireless power transmission for implantable medical devices
First Claim
1. An apparatus for wireless power transmission within an environment of unknown transmission characteristics comprising:
- a wireless power transmitter, the wireless power transmitter including;
an adaptive match transmit circuit with a tunable impedance, which supplies a tunable impedance to a power signal having a frequency of at least 0.5 GHZ; and
a wireless transmitter; and
a wireless power receiver, the wireless power receiver including;
multiple receive antennas configured to receive the transmitted power signal as a received power signal to maximize power transfer efficiency;
an adaptive match receive circuit, wherein the adaptive match receive circuit receives the received power signal, and is configured to match the tunable impedance, in dependence upon the environment of unknown transmission characteristics, to thereby increase a gain of the received power signal,wherein the wireless power transmitter and the wireless power receiver are disposed a distance apart that ranges between wavelength/100 to wavelength*100.
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Accused Products
Abstract
Described is an apparatus and method for increasing a gain of a transmitted power signal in a wireless link when operating in a mid field wavelength that is within a range between wavelength/100 to 100*wavelength and within a medium having a complex impedance between a transmit antenna and a receive antenna. The apparatus and method maximize the gain in the wireless link using simultaneous conjugate matching, to increase power transfer within the transmitted power signal, wherein the simultaneous conjugate matching accounts for interaction between the transmit antenna and the receive antenna, including the complex impedance of the medium between the transmit antenna and the receive antenna.
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Citations
14 Claims
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1. An apparatus for wireless power transmission within an environment of unknown transmission characteristics comprising:
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a wireless power transmitter, the wireless power transmitter including; an adaptive match transmit circuit with a tunable impedance, which supplies a tunable impedance to a power signal having a frequency of at least 0.5 GHZ; and a wireless transmitter; and a wireless power receiver, the wireless power receiver including; multiple receive antennas configured to receive the transmitted power signal as a received power signal to maximize power transfer efficiency; an adaptive match receive circuit, wherein the adaptive match receive circuit receives the received power signal, and is configured to match the tunable impedance, in dependence upon the environment of unknown transmission characteristics, to thereby increase a gain of the received power signal, wherein the wireless power transmitter and the wireless power receiver are disposed a distance apart that ranges between wavelength/100 to wavelength*100. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification