Patent application number | Description | Published |
20090015075 | Wireless Energy Transfer Using Coupled Antennas - A power transmission system produces a magnetic field at a source that is wirelessly coupled to a receiver. Both the source and receiver are capacitively coupled LC circuits, driven at or near resonance. | 01-15-2009 |
20090051224 | INCREASING THE Q FACTOR OF A RESONATOR - A wireless powering and charging system is described. The antennas can be high q loop antennas. The antennas can use coupling between a first part and a second part. | 02-26-2009 |
20090072629 | High Efficiency and Power Transfer in Wireless Power Magnetic Resonators - Techniques for wireless power transmission at levels that induce high power transfer and/or high efficiency of coupling. | 03-19-2009 |
20090127937 | Wireless Power Bridge - A wireless power bridge that allows magnetic transmission of energy across a solid barrier such as a wall. A circuit is described for controlling the operation. | 05-21-2009 |
20090134712 | Wireless Power Range Increase Using Parasitic Antennas - Wireless power transfer is created using a first antenna that is part of a magnetic resonator, to create a magnetic field in an area of the first antenna. One or more parasitic antennas repeats that power to create local areas where the power is more efficiently received. | 05-28-2009 |
20090179502 | Wireless powering and charging station - A base with a portable device that relays energy to the portable device. | 07-16-2009 |
20090213028 | Antennas and Their Coupling Characteristics for Wireless Power Transfer via Magnetic Coupling - Optimizing a wireless power system by separately optimizing received power and efficiency. Either one or both of received power and/ or efficiency can be optimized in a way that maintains the values to maximize transferred power. | 08-27-2009 |
20090243397 | Packaging and Details of a Wireless Power device - A wireless power system includes a power source, power receiver, and components thereof. The system can also include a parasitic antenna that can improve the coupling to the power source in various modes. The antenna can have both a variable capacitor and a variable inductor, and both of those can be changed in order to change characteristics of the matching. | 10-01-2009 |
20100038970 | Short Range Efficient Wireless Power Transfer - A device is powered wirelessly using magnetically coupled resonance, either from a short distance, e.g., on a surface, or from or on a longer distance. | 02-18-2010 |
20100109443 | WIRELESS POWER TRANSMISSION FOR ELECTRONIC DEVICES - Exemplary embodiments are directed to wireless power transfer. A wireless power receiver includes a receive antenna for coupling with a transmit antenna of transmitter generating a magnetic near field. The receive antenna receives wireless power from the magnetic near field and includes a resonant tank and a parasitic resonant tank wirelessly coupled to the resonant tank. A wireless power transmitter includes a transmit antenna for coupling with a receive antenna of a receiver. The transmit antenna generates a magnetic near field for transmission of wireless power and includes a resonant tank and a parasitic resonant tank coupled to the resonant tank. | 05-06-2010 |
20100117454 | ADAPTIVE MATCHING AND TUNING OF HF WIRELESS POWER TRANSMIT ANTENNA - Exemplary embodiments of the invention s are directed to a wireless power system with different coupling loops, such as two loops. The coupling loops are switched. One can be used for vicinity coupling, e.g., greater than a distance away, the other for proximity coupling, e.g., less than a distance away. | 05-13-2010 |
20100127660 | WIRELESS POWER TRANSMISSION FOR PORTABLE WIRELESS POWER CHARGING - Exemplary embodiments are directed to wireless power transfer. A portable wireless power charger includes an antenna configured to generate a magnetic near-field for coupling of wireless power to a wireless powered device including a receiver. The antenna is substantially disposed around the perimeter of the charging pad. The portable wireless power charger further includes a feeder cable for coupling the input power to the charging pad. | 05-27-2010 |
20100148723 | BIDIRECTIONAL WIRELESS POWER TRANSMISSION - Exemplary embodiments are directed to wireless power transfer. A wireless power transceiver and device comprise an antenna including a parallel resonator configured to resonate in response to a substantially unmodulated carrier frequency. The wireless power transceiver further comprises a bidirectional power conversion circuit coupled to the parallel resonator. The bidirectional power conversion circuit is reconfigurable to rectify an induced current received at the antenna into DC power and to induce resonance at the antenna in response to DC power. | 06-17-2010 |
20100184371 | TRANSMITTERS FOR WIRELESS POWER TRANSMISSION - Exemplary embodiments are directed to wireless power transfer. A wireless power transmitter includes a transmit antenna configured as a resonant tank including a loop inductor and an antenna capacitance. The transmitter further includes an amplifier configured to drive the transmit antenna and a matching circuit operably coupled between the transmit antenna and the amplifier. The transmitter also includes a capacitor integrating the antenna capacitance and a matching circuit capacitance. | 07-22-2010 |
20100190435 | PASSIVE RECEIVERS FOR WIRELESS POWER TRANSMISSION - Exemplary embodiments are directed to wireless power transfer. A wireless power transmission receiver includes a receive antenna including a parallel resonator configured to resonate in response to a magnetic near-field and couple wireless power therefrom. The receiver further includes a passive rectifier circuit coupled to the parallel resonator. The passive rectifier circuit is configured to transform a load impedance to the parallel resonator. | 07-29-2010 |
20100190436 | CONCURRENT WIRELESS POWER TRANSMISSION AND NEAR-FIELD COMMUNICATION - Exemplary embodiments are directed to wireless power transfer and Near-Field Communication (NFC) operation. An electronic device includes an antenna configured to resonate at an NFC frequency and generate an induced current. The electronic device further including rectifier circuitry and NFC circuitry each concurrently coupled to the induced current. The rectifier circuitry configured to rectify the induced current into DC power for the electronic device and the NFC circuitry configured to demodulate any data on the induced current. A method for concurrent reception of wireless power and NFC includes receiving an induced current from an antenna, rectifying the induced current into DC power for use by an electronic device, and demodulating the induced current concurrent with rectifying to determine any data for the NFC. | 07-29-2010 |
20100194335 | WIRELESS POWER AND DATA TRANSFER FOR ELECTRONIC DEVICES - Exemplary embodiments are directed to wireless power. A wireless charging device may comprise a charging region configured for placement of one or more chargeable devices. The charging device may further include at least one transmit antenna configured for transmitting wireless power within the charging region. Furthermore, the charging device is configured to exchange data between at least one chargeable device of the one or more chargeable devices. | 08-05-2010 |
20100210233 | RECEIVE ANTENNA ARRANGEMENT FOR WIRELESS POWER - Exemplary embodiments are directed to wireless charging. An electronic device may comprise at least one receive antenna integrated within an electronic device and configured to receive wireless power from a wireless transmit antenna. Further, the at least one receive antenna may be spaced from each conductive component within the electronic device having a clearance therebetween adapted to enable formation of a magnetic field around the loop conductor. | 08-19-2010 |
20100277120 | PARASITIC DEVICES FOR WIRELESS POWER TRANSFER - Exemplary embodiments are directed to wireless power transfer. A method may include wirelessly receiving power from a near field in a first near field coupling mode region with at least one parasitic antenna coupled to a housing having a chargeable device positioned therein. The method may further include generating an enhanced near field from the near field with the at least one parasitic antenna and wirelessly receiving power from the enhanced near field at an at least one receive antenna coupled to the chargeable device. | 11-04-2010 |
20110095617 | FERRITE ANTENNAS FOR WIRELESS POWER TRANSFER - Ferrite core antenna used for transmitting or receiving wireless power. The antenna can move relative to the core. | 04-28-2011 |
20110254503 | WIRELESS POWER ANTENNA ALIGNMENT ADJUSTMENT SYSTEM FOR VEHICLES - Exemplary embodiments are directed to wireless charging and wireless power alignment of wireless power antennas associated with a vehicle. A wireless power charging apparatus includes an antenna including first and second orthogonal magnetic elements for detecting a horizontal component of a magnetic field generated from a second charging base antenna. A processor determines a directional vector between the antennas. | 10-20-2011 |
20110285349 | ADAPTIVE WIRELESS ENERGY TRANSFER SYSTEM - Exemplary embodiments are directed to wireless power transfer using magnetic resonance in a coupling mode region between a charging base (CB) and a remote system such as a battery electric vehicle (BEV). The wireless power transfer can occur from the CB to the remote system and from the remote system to the CB. Load adaptation and power control methods can be employed to adjust the amount of power transferred over the wireless power link, while maintaining transfer efficiency. | 11-24-2011 |
20120001492 | INCREASING THE Q FACTOR OF A RESONATOR - A wireless powering and charging system is described. The antennas can be high q loop antennas. The antennas can use coupling between a first part and a second part. | 01-05-2012 |
20120153894 | WIRELESS ENERGY TRANSFER AND CONTINUOUS RADIO STATION SIGNAL COEXISTENCE - This disclosure provides systems, methods and apparatus for wirelessly transmitting power while avoiding interference with wireless communication devices. In one aspect a wireless power transmitter apparatus is provided. The wireless power transmitter apparatus includes a transmit circuit configured to wirelessly transmit power at a transmit frequency to a first receiver device. The wireless power transmitter apparatus further includes a controller circuit configured to reduce a level of emission of the transmit circuit at a determined frequency during a period of time based on information about an information signal transmitted to a second receiver device substantially at the determined frequency to be received within the period of time. | 06-21-2012 |
20120161696 | WIRELESS ENERGY TRANSFER VIA COUPLED PARASITIC RESONATORS - This disclosure provides systems, methods and apparatus for wirelessly transferring power using parasitic resonators. In one aspect a wireless power receiver apparatus for powering or charging an electric vehicle is provided. The wireless power receiver apparatus includes a receive circuit including a first coil. The receive circuit is configured to wirelessly receive power so as to power or charge or power the electric vehicle. The wireless power receiver apparatus further includes a passive circuit including a second coil. The passive circuit is configured to wirelessly receive power from a transmit circuit including a third coil. The passive circuit is further configured to wirelessly retransmit power received from the transmit circuit to the receive circuit. The wireless power receiver apparatus further includes a controller configured to displace the second coil from the first coil is provided. | 06-28-2012 |
20120262002 | ANTENNA ALIGNMENT AND VEHICLE GUIDANCE FOR WIRELESS CHARGING OF ELECTRIC VEHICLES - Embodiments are directed to a wireless power antenna alignment systems and methods for electric vehicles. A system may include a sensor configured to detect the strength of an electromagnetic field in multiple dimensions and a processor configured to determine at least one of a direction and a position of a transmitted beacon signal based on an output of the sensor. | 10-18-2012 |
20120262004 | WIRELESS POWER TRANSMISSION FOR ELECTRONIC DEVICES - Exemplary embodiments are directed to wireless power transfer. A wireless power receiver includes a receive antenna for coupling with a transmit antenna of transmitter generating a magnetic near field. The receive antenna receives wireless power from the magnetic near field and includes a resonant tank and a parasitic resonant tank wirelessly coupled to the resonant tank. A wireless power transmitter includes a transmit antenna for coupling with a receive antenna of a receiver. The transmit antenna generates a magnetic near field for transmission of wireless power and includes a resonant tank and a parasitic resonant tank coupled to the resonant tank. | 10-18-2012 |
20130029595 | COMMUNICATIONS RELATED TO ELECTRIC VEHICLE WIRED AND WIRELESS CHARGING - Systems, methods and apparatus are disclosed for wireless power transfer and data transfer. In one aspect a power transmission apparatus is provided. The power transmission apparatus includes a transmitter configured to wirelessly transmit power via a wireless power transfer field at a level sufficient to power or charge an electric vehicle. The power transmission apparatus further includes a controller circuit configured to establish a first wireless communication link with the electric vehicle. The controller circuit is further configured to establish a second wireless communication link with the electric vehicle in response to detecting that the electric vehicle is being charged. | 01-31-2013 |
20130038138 | WIRELESS POWERING AND CHARGING STATION - A base including a magnetically resonant antenna therein for relaying energy to a portable device. | 02-14-2013 |
20130270923 | SYSTEM AND METHOD FOR EFFICIENT WIRELESS POWER TRANSFER TO DEVICES LOCATED ON AND OUTSIDE A CHARGING BASE - A wireless power transmission system and method for transmitting power from a charging base to receivers located both on and outside the charging base. The system utilizes wireless power transmission of a transmitter with a wound transmit coil. | 10-17-2013 |
20130342025 | PACKAGING AND DETAILS OF A WIRELESS POWER DEVICE - A wireless power system includes a power source, power receiver, and components thereof. The system can also include a parasitic antenna that can improve the coupling to the power source in various modes. The antenna can have both a variable capacitor and a variable inductor, and both of those can be changed in order to change characteristics of the matching. | 12-26-2013 |
20140001882 | TRANSMITTERS FOR WIRELESS POWER TRANSMISSION | 01-02-2014 |
20140015329 | SYSTEMS, METHODS, AND APPARATUS FOR DETECTION OF METAL OBJECTS IN A PREDETERMINED SPACE - This disclosure provides systems, methods and apparatus for detecting foreign objects. In one aspect an apparatus for detecting a presence of an object is provided. The apparatus includes a resonant circuit having a resonant frequency. The resonant circuit includes a sense circuit including an electrically conductive structure. The apparatus further includes a coupling circuit coupled to the sense circuit. The apparatus further includes a detection circuit coupled to the sense circuit via the coupling circuit. The detection circuit is configured to detect the presence of the object in response to detecting a difference between a measured characteristic that depends on a frequency at which the resonant circuit is resonating and a corresponding characteristic that depends on the resonant frequency of the resonant circuit. The coupling circuit is configured to reduce a variation of the resonant frequency by the detection circuit in the absence of the object. | 01-16-2014 |
20140015522 | SYSTEMS, METHODS, AND APPARATUS FOR DETECTION OF METAL OBJECTS IN A PREDETERMINED SPACE - This disclosure provides systems, methods and apparatus for detecting foreign objects. In one aspect an apparatus for detecting a presence of an object in a magnetic field is provided. The apparatus includes a power circuit configured to generate the magnetic field and transfer power wirelessly at a level sufficient to power or charge a load via the magnetic field. The apparatus further includes a detection circuit configured to transmit signals and detect, based on a reflection of the transmitted signals, a frequency of vibration of the object caused by the magnetic field. | 01-16-2014 |
20140111151 | SYSTEM AND METHOD FOR INDUCTANCE COMPENSATION IN WIRELESS POWER TRANSFER - This disclosure provides systems, methods and apparatus for wireless power transfer. In one aspect an apparatus for wirelessly transferring power from a charging power source to a device is provided. The apparatus includes a first strand wound in one or more turns and operationally coupled to the charging power source and a second strand wound together with the first strand in one or more turns and operationally coupled to the charging power source. The apparatus further includes an inductor circuit connected to the first strand and disconnected from the second strand. The inductor circuit is further configured to reduce a current difference between a first current flowing through the first strand and a second current flowing through the second strand. | 04-24-2014 |
20140139039 | SHORT RANGE EFFICIENT WIRELESS POWER TRANSFER - Method and system for wireless power transmission are disclosed. In one aspect, the system includes a charging base positioned on a desktop component and configured to be positioned on a desktop. The system also includes a transmitter located in the charging base and including a transmit coil wound about a plane, the transmitter being configured to wirelessly transfer power, via a wireless field, from the transmit coil to a first receiver. The system further includes a power relay configured to be positioned on the desktop and configured to relay power received from the transmitter to at least one peripheral device different from the first receiver when the peripheral device is positioned on the desktop. | 05-22-2014 |
20140183969 | WIRELESS POWER BRIDGE - A wireless power bridge that allows magnetic transmission of energy across a solid barrier such as a wall. A circuit is described for controlling the operation. | 07-03-2014 |
20140327391 | VEHICLE CHARGING PAD HAVING REDUCED THICKNESS - This disclosure provides systems, methods and apparatus for charging pads for use with wireless power systems. In one aspect a vehicle charging pad having a reduced thickness is provided. A charging pad may include multiple wire coils and a ferrite block backing. By forming a longitudinally extending slot in the ferrite block, a portion of the wires extending from the coils can be routed through the slot in the ferrite block to decrease the overall thickness of the charging pad. | 11-06-2014 |
20140333256 | SYSTEM AND METHOD FOR DETECTING THE PRESENCE OF A MOVING OBJECT BELOW A VEHICLE - This disclosure provides systems, methods and apparatus for detecting the presence of an object or living being below a vehicle. In one aspect a wireless charging system for an electric vehicle is provided. The system includes a vehicle charging pad configured to wirelessly receive power from a base charging pad spaced from the vehicle charging pad. The system further includes a detection apparatus on a surface of the vehicle. The detection apparatus is configured to detect existence of a moving object within an exclusion zone underneath the vehicle. The detection apparatus includes at least one antenna assembly configured to transmit radiation and to receive radiation reflected from material within the exclusion zone. The at least one antenna assembly has a radiation pattern for at least one of the transmitted radiation and the received radiation, the radiation pattern having a maximum gain and having a first gain along a first line perpendicular to the surface less than half of the maximum gain on a linear scale. | 11-13-2014 |
20150042168 | SYSTEMS, METHODS, AND APPARATUS RELATED TO DETECTING AND IDENTIFYING ELECTRIC VEHICLE AND CHARGING STATION - Systems, methods, and apparatus are disclosed for communicating between a charging station and an electric vehicle. In one aspect, a method of pairing a charging station with an electric vehicle is provided, including providing wireless power via a magnetic field having a first intensity level that is sufficient to charge or power the electric vehicle, providing an information signal via the magnetic field when the magnetic field is set at a second intensity level that is lower than the first intensity level, the information signal uniquely identifying the charging station from a plurality of charging stations, communicating with the electric vehicle via a communication link that is different from the magnetic field, communicating comprising communicating with the electric vehicle parking guidance information to the location of the charging station, and establishing the communication link based at least in part on the information signal provided via the magnetic field. | 02-12-2015 |
20150073642 | SYSTEMS, METHODS, AND APPARATUS RELATED TO GUIDANCE AND ALIGNMENT FOR AN ELECTRIC VEHICLE AND CHARGING STATION - Systems, methods, and apparatus are disclosed for guiding and aligning an electric vehicle with a charging station. In one aspect, a method of guiding an electric vehicle is provided, including determining a location of a charging spot associated to a charging base in relation to a charging coupler of the electric vehicle. The method further includes displaying an indicator of the location of the charging spot in a three dimensional perspective view, the indicator displayed for guiding a user of the electric vehicle to position a charging coupler of the electric vehicle over the charging base within a tolerance area. The method further includes transitioning to displaying the indicator of the location of the charging spot in a two dimensional top-down view based on determining that an angle between a reference point and a point on ground related to the location of the charging spot satisfies a threshold. | 03-12-2015 |