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John D. Joannopoulos, Belmont US

John D. Joannopoulos, Belmont, MA US

Patent application numberDescriptionPublished
20080247428EFFICIENT HARMONIC GENERATION AND FREQUENCY CONVERSION IN MULTI-MODE CAVITIES - A doubly-resonant cavity structure includes at least one cavity structures so as to allow total frequency conversion for second or third-harmonic generation using χ10-09-2008
20080278264WIRELESS ENERGY TRANSFER - Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.11-13-2008
20090097805THERMAL SENSING FIBER DEVICES - There is provided a thermal sensing fiber including a semiconducting element having a fiber length and characterized by a bandgap energy corresponding to a selected operational temperature range for the fiber in which there can be produced a change in thermally-excited electronic charge carrier population in the semiconducting element in response to a temperature change in the selected temperature range. At least one pair of conducting electrodes is provided in contact with the semiconducting element along the fiber length, and an insulator is provided along the fiber length.04-16-2009
20090169158Thermal sensing fiber devices - There is provided a feedback-controlled self-heat-monitoring fiber, including an insulator having a fiber length with at least one metal-semiconductor-metal thermal sensing element along the fiber length and disposed at a position in a cross section of the fiber for sensing changes in fiber temperature. An electronic circuit is connected to the thermal sensing element for indicating changes in fiber temperature. A controller is connected for controlling optical transmission through an optical transmission element, that is disposed along the fiber length, in response to indications of changes in fiber temperature.07-02-2009
20090195332WIRELESS NON-RADIATIVE ENERGY TRANSFER - The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.08-06-2009
20090195333WIRELESS NON-RADIATIVE ENERGY TRANSFER - The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.08-06-2009
20090207867SURFACE-EMITTING FIBER LASER - In one aspect, the disclosure features an article, including a fiber waveguide extending along a waveguide axis, the fiber waveguide including a core extending along the waveguide axis and a confinement region surrounding the core. The confinement region is configured to guide radiation at a first wavelength, λ08-20-2009
20090267709WIRELESS NON-RADIATIVE ENERGY TRANSFER - The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.10-29-2009
20090267710WIRELESS NON-RADIATIVE ENERGY TRANSFER - The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.10-29-2009
20090284083WIRELESS ENERGY TRANSFER, INCLUDING INTERFERENCE ENHANCEMENT - Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured for energy transfer with a second resonator structure over a distance D larger than characteristic sizes, L11-19-2009
20100096934WIRELESS ENERGY TRANSFER WITH HIGH-Q SIMILAR RESONANT FREQUENCY RESONATORS - Described herein are embodiments of transferring electromagnetic energy that includes providing a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure having a first mode with a resonant frequency ω04-22-2010
20100102639WIRELESS NON-RADIATIVE ENERGY TRANSFER - The electromagnetic energy transfer device includes a first resonator structure receiving energy from an external power supply. The first resonator structure has a first Q-factor. A second resonator structure is positioned distal from the first resonator structure, and supplies useful working power to an external load. The second resonator structure has a second Q-factor. The distance between the two resonators can be larger than the characteristic size of each resonator. Non-radiative energy transfer between the first resonator structure and the second resonator structure is mediated through coupling of their resonant-field evanescent tails.04-29-2010
20100102640WIRELESS ENERGY TRANSFER TO A MOVING DEVICE BETWEEN HIGH-Q RESONATORS - Described herein are embodiments of a first resonator with a quality factor, Q04-29-2010
20100102641WIRELESS ENERGY TRANSFER ACROSS VARIABLE DISTANCES - Described herein are embodiments of transferring electromagnetic energy that includes a first electromagnetic resonator receiving energy from an external power supply, said first resonator having a resonant frequency ω04-29-2010
20100117455WIRELESS ENERGY TRANSFER USING COUPLED RESONATORS - Described herein are embodiments of transmitting power wirelessly that includes driving a high-Q non-radiative resonator at a value near its resonant frequency to produce a magnetic field output, said non-radiative-resonator formed of a combination of resonant parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part, and maintaining at least one characteristic of said resonator such that its usable range has a usable distance over which power can be received, which distance is set by a detuning effect when a metallic structure gets too close to said resonator.05-13-2010
20100117456APPLICATIONS OF WIRELESS ENERGY TRANSFER USING COUPLED ANTENNAS - Described herein are embodiments of transmitting power wirelessly that include driving a high-Q non-radiative resonator at a value near its resonant frequency to produce a magnetic field output, said non-radiative-resonator formed of a combination of resonant parts, including at least an inductive part formed by a wire loop, and a capacitor part that is separate from a material forming the inductive part, and maintaining at least one characteristic of said resonator such that its usable range has a usable distance over which power can be received, which-distance is set by a detuning effect when a-second resonator gets too close to said resonator.05-13-2010
20100123353WIRELESS ENERGY TRANSFER WITH HIGH-Q FROM MORE THAN ONE SOURCE - Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, a second source high-Q resonator, optionally coupled to an energy source, and a third high-Q resonator, optionally coupled to an energy drain, where at least one of the source resonators and the third resonator may be coupled to transfer electromagnetic energy from at least one of the said source resonators to said third resonator.05-20-2010
20100123354WIRELESS ENERGY TRANSFER WITH HIGH-Q DEVICES AT VARIABLE DISTANCES - Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, and a second high-Q resonator, optionally coupled to an energy drain that may be located a variable distance from the source resonator. The source resonator and the second resonator may be coupled to transfer electromagnetic energy from said source resonator to said second resonator over a distance D that is smaller than each of the resonant wavelengths λ05-20-2010
20100123355WIRELESS ENERGY TRANSFER WITH HIGH-Q SUB-WAVELENGTH RESONATORS - Described herein are embodiments of transferring electromagnetic energy that includes a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure may have a first mode with a resonant frequency ω05-20-2010
20100127573WIRELESS ENERGY TRANSFER OVER A DISTANCE AT HIGH EFFICIENCY - Described herein are embodiments of a source resonator optionally coupled to an energy source, and a second resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and the second resonator may be coupled to provide κ/sqrt(Γ05-27-2010
20100127574WIRELESS ENERGY TRANSFER WITH HIGH-Q AT HIGH EFFICIENCY - Described herein are embodiments of a source high-Q resonator optionally coupled to an energy source, and a second high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and the second resonator may be coupled to provide Γ/sqrt(Γ05-27-2010
20100127575WIRELESS ENERGY TRANSFER WITH HIGH-Q TO MORE THAN ONE DEVICE - Described herein are embodiments of a source high-Q resonator, optionally coupled to an energy source, a second high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. A third high-Q resonator, optionally coupled to an energy drain that may be located a distance from the source resonator. The source resonator and at least one of the second resonator and third resonator may be coupled to transfer electromagnetic energy from said source resonator to said at least one of the second resonator and third resonator.05-27-2010
20100133918WIRELESS ENERGY TRANSFER OVER VARIABLE DISTANCES BETWEEN RESONATORS OF SUBSTANTIALLY SIMILAR RESONANT FREQUENCIES - Described herein are embodiments of a first resonator, with a resonant frequency f06-03-2010
20100133919WIRELESS ENERGY TRANSFER ACROSS VARIABLE DISTANCES WITH HIGH-Q CAPACITIVELY-LOADED CONDUCTING-WIRE LOOPS - Described herein are embodiments of at least one source resonator coupled to an energy source generating an oscillating near field region, and at least one device resonator optionally coupled to an electronic device located at a variable distance within the at least one source resonator's near-field region, where at least two of the resonators comprise high-Q capacitively-loaded conducting-wire loops.06-03-2010
20100133920WIRELESS ENERGY TRANSFER ACROSS A DISTANCE TO A MOVING DEVICE - Described herein are embodiments of a first resonator coupled to an energy source generating an oscillating near field region, and a second resonator optionally coupled to an energy drain and moving freely within the near field region of the first resonator. The first resonator and the second resonator may be coupled to transfer electromagnetic energy from said first resonator to said second resonator as the second resonator moves freely within the near field region, and where the region may include distances greater than the characteristic size of the smaller of the first resonator and the second resonator.06-03-2010
20100148589EFFICIENT NEAR-FIELD WIRELESS ENERGY TRANSFER USING ADIABATIC SYSTEM VARIATIONS - Disclosed is a method for transferring energy wirelessly including transferring energy wirelessly from a first resonator structure to an intermediate resonator structure, wherein the coupling rate between the first resonator structure and the intermediate resonator structure is κ06-17-2010
20100171370MAXIMIZING POWER YIELD FROM WIRELESS POWER MAGNETIC RESONATORS - Described herein are embodiments of a wireless power transmitter device for transmitting power to at least one high-Q resonator that includes a first portion, formed of a high-Q magnetic resonator, and a high frequency generation system, having a number of components, wherein at least one of said components is formed using a process which creates nanoscale features.07-08-2010
20100181844HIGH EFFICIENCY AND POWER TRANSFER IN WIRELESS POWER MAGNETIC RESONATORS - Described herein are embodiments of a wireless power system that include a signal generator, having a connection to a source of power, and which creates a substantially unmodulated signal at a first frequency, a transmitting high-Q resonator, generating a magnetic field having said first frequency and based on power created by said signal generator, a receiving high-Q resonator, receiving a magnetic power signal created by said transmitting resonator, said receiving resonator being a distance greater than 1 m spaced from said transmitting resonator, and a load receiving part, receiving power from said receiving resonator, wherein a transfer efficiency between said transmitting resonator and said receiving resonator is greater than 25% at 1 m of distance between said transmitting resonator and said receiving resonator.07-22-2010
20100187911WIRELESS ENERGY TRANSFER OVER DISTANCES TO A MOVING DEVICE - Described herein are embodiments of a source resonator coupled to an energy source generating an oscillating near field region; and at least one device resonator optionally coupled to at least one energy drain and freely moving within the near field region of the source resonator. The source resonator and the at least one device resonator may be coupled to transfer electromagnetic energy wirelessly from said source resonator to said at least one device resonator as the at least one device resonator moves freely within the near field region, where the source resonator and the at least one device resonator may be coupled to provide κ/sqrt(Γ07-29-2010
20100201205BIOLOGICAL EFFECTS OF MAGNETIC POWER TRANSFER - Described herein are embodiments of forming a wireless power transfer system which uses at least two high-Q magnetically resonant elements, and which have values which are set to acceptable levels of electric and magnetic field strength and radiated power.08-12-2010
20100207458WIRELESS ENERGY TRANSFER OVER A DISTANCE WITH DEVICES AT VARIABLE DISTANCES - Described herein are embodiments of a source resonator, optionally coupled to an energy source, and a second resonator, which may be optionally coupled to an energy drain, located a variable distance from the source resonator. The source resonator and the second resonator may be coupled to transfer electromagnetic energy from said source resonator to said second resonator over a distance D that is smaller than each of the resonant wavelengths λ08-19-2010
20100225175WIRELESS POWER BRIDGE - Described herein are embodiments of forming a wireless power transfer system which include locating a source high-Q resonator on one side of a solid object, where the solid object may be an object from the group consisting of a solid non-conducting wall, or a solid non-conducting window, locating a receiving high-Q resonator on the other side of the solid object, aligning a first position of the source resonator with a second position of the receiving resonator, and using the source resonator to create a magnetic field, and using the receiving resonator to receive the magnetic field, and to produce an output that includes power based on said receiving the magnetic field.09-09-2010
20100231053WIRELESS POWER RANGE INCREASE USING PARASITIC RESONATORS - Described herein are embodiments of a system that includes a first system including a high-Q resonator of a first size, transmitting wireless power via a magnetic field; and a repeater high-Q resonator, of a second size, transmitting said wireless power in an area.09-16-2010
20100237706WIRELESS POWER SYSTEM AND PROXIMITY EFFECTS - Described herein are embodiments of a wireless power transmission system which includes a wireless source high-Q resonator and power supply, said power supply generating signals at a first frequency, and said high-Q resonator having an inductor formed by a wire, a capacitive part, and said inductive part and capacitive part being resonant with said first frequency, and said resonator having at least one component that renders it resistant to anything other than large metallic structures in its vicinity.09-23-2010
20100237707INCREASING THE Q FACTOR OF A RESONATOR - Described herein are embodiments of a transmitter system for transmitting wireless electrical power, that includes a source which creates an output electrical signal having a specified frequency, a coupling part, directly connected to said source, said coupling part formed of a first loop of wire which is matched for optimal power transfer to said source, and a high-Q magnetic resonator part, spaced from said coupling part such that it is not directly connected to said coupling part, but magnetically coupled to a magnetic field created by said coupling part, receiving power wirelessly from said coupling part, and said high-Q magnetic resonator part creating a magnetic field based on said power that is wirelessly received, said high-Q magnetic resonator formed of an wire coil having an inductance L, and a capacitance C, and said resonator part having an LC value which is substantially resonant with said specified frequency.09-23-2010
20100237708TRANSMITTERS AND RECEIVERS FOR WIRELESS ENERGY TRANSFER - In embodiments of the present invention improved capabilities are described for receiving magnetic transmission of power from at least a first high-Q resonator, comprising a wire loop high-Q resonator, having a wire formed into at least one loop forming an inductance and having a capacitance, the wire loop resonator having an LC value tuned for receiving a magnetic field of a first specified frequency, and producing an output based on receiving the magnetic field that includes electrical power. The wire loop resonator may include a first part associated with the wire loop resonator which increases the coupling between the first high-Q resonator and the wire loop portion of said resonator without increasing the radius of the wire loop resonator.09-23-2010
20100253152LONG RANGE LOW FREQUENCY RESONATOR - Described herein are embodiments of a wireless power transmitter system for transmitting power to at least one high-Q resonator that includes a connection to a source of line power, a modulating part, which converts said line power to create a first frequency of lower than 1 MHz, and a transmitter part, including a transmitting high-Q resonator formed of a conductive loop with a capacitor that brings said high-Q resonator to resonance at said first frequency, and which produces a magnetic field based on said source of line power, said transmitter part having a Q factor at said frequency, where said Q factor is at least 300.10-07-2010
20100258174GLOBAL OPTIMIZATION OF THIN FILM PHOTOVOLTAIC CELL FRONT COATINGS - A solar cell includes a thin film photovoltaic material structure used in absorbing light of a selective bandwidth. A multitude of dielectric front coatings are positioned on the thin film photovoltaic material structure so as to maximize admittance over the selected bandwidth. The thicknesses and indices of each of the front coatings are chosen by a global-optimization procedure to maximize the short-circuit current of the solar cell.10-14-2010
20100264745RESONATORS FOR WIRELESS POWER APPLICATIONS - Described herein are embodiments of a receiving assembly for a mobile device for receiving power wirelessly from at least one high-Q resonator that includes a receiving high-Q resonator part, tuned to magnetic resonance at a specified frequency, said receiving resonator part including a conductive loop extending around space and material not exceeding the size of the mobile device, and said receiving resonator part including a capacitive structure coupled to said conductive loop; and at least one mobile electronic item, powered by power that is wirelessly received by said receiving high-Q resonator part.10-21-2010
20100277005WIRELESS POWERING AND CHARGING STATION - Described herein are embodiments of a system for receiving wireless power from a high-Q resonator that include a base for a portable device, having surfaces that are shaped to mechanically hold to outer surfaces of a portable device, and having a high-Q magnetic resonator therein, said resonator formed of a coil portion in series with a capacitive portion, said resonator having an LC value which is tuned to a specified frequency.11-04-2010
20100316088Thermal Sensing Fiber Devices - There is provided a thermal sensing fiber grid, including a plurality of rows and columns of thermal sensing fibers, each of which includes a semiconducting element that has a fiber length and that is characterized by a bandgap energy corresponding to a selected operational temperature range of the fiber in which there can be produced a change in thermally-excited electronic charge carrier population in the semiconducting element in response to a temperature change in the selected temperature range. There is included at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length, and an insulator along the fiber length. An electronic circuit is provided for and connected to each thermal sensing fiber for producing an indication of thermal sensing fiber grid coordinates of a change in ambient temperature.12-16-2010
20100327660RESONATORS AND THEIR COUPLING CHARACTERISTICS FOR WIRELESS POWER TRANSFER VIA MAGNETIC COUPLING - Described herein are embodiments of a method of forming a wireless power system that includes first optimizing a first parameter of wireless power transmission between at least one high-Q source resonator and at least one high-Q receiver resonator and second optimizing a second parameter of said wireless power transmission.12-30-2010
20100327661PACKAGING AND DETAILS OF A WIRELESS POWER DEVICE - Described herein are embodiments of a wireless power transmitter for transmitting power to at least one high-Q resonator that includes a high-Q magnetic resonator, a transmit system that creates a driving signal at a frequency that is substantially resonant with said magnetic resonator, and a current sensor, sensing an amount of current that flows through said magnetic resonator and creates a current sense signal indicative thereof and wherein said signal indicative of current is used by said transmit system to change said driving signal based on a characteristic of transmitting by said magnetic resonator.12-30-2010
20110012431RESONATORS FOR WIRELESS POWER TRANSFER - Described herein are embodiments of a method for receiving power wirelessly from at least one high-Q resonator that include integrating a high-Q resonator element in an electronic device, said high-Q resonator element including an inductive part wound around a magnetic material, said resonator element including a first coil portion which is connected in series with a capacitor to form an LC resonant circuit that may be resonant with an applied magnetic driving signal, and also including a second coil portion wound around a magnetic material, and inductively coupled to said first coil portion and receiving power wirelessly using said resonator element, at a frequency that is substantially resonant with a value determined according to said LC resonant circuit and producing an output using said coil portion to drive said electronic device.01-20-2011
20110018361TUNING AND GAIN CONTROL IN ELECTRO-MAGNETIC POWER SYSTEMS - Described herein are embodiments of a magnetic power coupling system that includes at least one high-Q receiver resonator, configured to receive a magnetic signal within a near field of at least one other high-Q resonator that conveys power therein, and converts said magnetic signal into power, and produces a power output, said receiver including a connection to a load, wherein said connection allows coupling of said power to said load, wherein said receiver creates a signal, said signal representing at least one characteristic of the power coupling, and wherein said characteristic of the power coupling changes based on environmental conditions.01-27-2011
20110025131PACKAGING AND DETAILS OF A WIRELESS POWER DEVICE - Described herein are embodiments of a wireless power system that includes at least a first high-Q magnetic resonator including an inductor having a variable inductance and a capacitor, having a variable capacitance; and a power conversion circuit, coupled to said first magnetic resonator, and exchanging power wirelessly with at least a second high-Q magnetic resonator, said circuit determining a measure of wireless power transfer, and producing a control signal indicative of said measure, and providing said control signal to said first magnetic resonator, and wherein said magnetic resonator adjusts at least one of said inductor and said capacitor value based on said signal.02-03-2011
20110043046WIRELESS ENERGY TRANSFER WITH HIGH-Q CAPACITIVELY LOADED CONDUCTING LOOPS - Described herein are embodiments of a source resonant structure and a device resonant structure, the structures may be capable of performing wireless near-field energy transfer when separated a distance D from each other, where the absolute value of the difference of said angular frequencies w02-24-2011
20110049996WIRELESS DESKTOP IT ENVIRONMENT - Described herein are embodiments of a wireless power transmitting system for transmitting power to a high-Q magnetic resonator that includes a desktop component and a high-Q magnetic resonator, formed of an inductive loop and a capacitor, said magnetic resonator integrated into the desktop component.03-03-2011
20110049998WIRELESS DELIVERY OF POWER TO A FIXED-GEOMETRY POWER PART - Described herein are embodiments of an electronic system that includes a substrate, having a plurality of power consuming elements thereon, said power consuming elements arranged in a fixed geometry on said substrate, and at least a plurality of said power consuming elements including at least one high-Q wireless power receiving element, that wirelessly receives power that is sent thereto from at least one high-Q wireless power source element, and uses said power which is wirelessly received, to power said power consuming elements, wherein at least one of said power consuming elements receives power separately from at least another of said power consuming elements, and wherein each of said power consuming elements operates substantially simultaneously, and wherein at least one of said power consuming elements has an output connected to another of said power consuming elements.03-03-2011
20110074218WIRELESS ENERGY TRANSFER - Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.03-31-2011
20110074347WIRELESS ENERGY TRANSFER - Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.03-31-2011
20110089895WIRELESS ENERGY TRANSFER - Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.04-21-2011
20110140544ADAPTIVE WIRELESS POWER TRANSFER APPARATUS AND METHOD THEREOF - Described herein are embodiments of a method that includes coupling a high-Q resonator of a transmitter and a high-Q resonator of a receiver together by a common inductance of the transmitter and the receiver; and adjusting the transmitter, the receiver, or both, to control power transmitted wirelessly between the transmitter and the receiver.06-16-2011
20110148219SHORT RANGE EFFICIENT WIRELESS POWER TRANSFER - Described herein are embodiments of an electronic system that includes a magnetically coupled resonance system, that includes a first surface against which devices to be provided with power are located, and providing power to said devices on said first surface, and providing power to other devices that are not on said first surface, each of said devices receiving said power using magnetically coupled resonance between at least one high-Q source magnetic resonator adjacent to said first surface, and a high-Q device magnetic resonator in at least one device.06-23-2011
20110162895NONCONTACT ELECTRIC POWER RECEIVING DEVICE, NONCONTACT ELECTRIC POWER TRANSMITTING DEVICE, NONCONTACT ELECTRIC POWER FEEDING SYSTEM, AND ELECTRICALLY POWERED VEHICLE - Described herein are embodiments of a noncontact electric power receiving high-Q device magnetic resonator for an electrically powered vehicle that includes an electric power receiving high-Q magnetic resonator for receiving electric power from another magnetic resonator, which receives electric power from a power source to generate an electromagnetic field, by resonating with said another magnetic resonator through said electromagnetic field.07-07-2011

Patent applications by John D. Joannopoulos, Belmont, MA US