Energous Corporation

Tyco Fire + Security Gmbh

Energous Corportion

Sensormatic Electronics Corporation

Alister Hosseini

Michael A Leabman

Evangelos Kornaros

Saman Kabiri

Steve Edward Trivelpiece

Cesar A Johnston

Deepak Jain

Erik Heinke

Sean Nicolson

Chryssoula Kyriazidou

Craig Evan Trivelpiece

Richard John Campero

Disclosed is a wireless power transmitter for wirelessly delivering power to a receiver device, the wireless power transmitter including: a plurality of unit cells configured to radiate one or more radio frequency (RF) power transmission waves, each unit cell in the plurality of unit cells including: (i) a metal portion having an interior perimeter that surrounds an aperture defined by the metal portion; and (ii) an antenna that is aligned with the aperture in a first dimension, the antenna being configured to radiate one or more RF power transmission waves for wirelessly charging a receiver device. The one or more RF power transmission waves leak from the wireless power transmitter at least in part through the aperture when the receiver device is positioned within a threshold distance from the unit cell.

Near-field wireless power transmission techniques

An example method is performed at a near-field charging pad with a processor, a power-transferring element, a signature-signal-receiving circuit, and the processor of the near-field charging pad is in communication with a data source that includes predefined signature signals that each identify one of (i) a wireless power receiver, (ii) an object other than a wireless power receiver, and (iii) a combination of a wireless power receiver and an object other than a wireless power receiver. The method includes: after sending a plurality of test radio frequency (RF) power transmission signals, detecting, using the signature-signal-receiving circuit, respective amounts of reflected power; generating, based on variations in the respective amounts of reflected power, a signature signal; and determining whether (i) an authorized wireless power receiver is present on the near-field charging pad and/or (ii) an object other than a wireless power receiver is present on the near-field charging pad.

Systems and methods for detecting wireless power receivers and other objects at a near-field charging pad

Near-held wireless power transmission techniques

Near-field antennas and methods of operating and manufacturing near-field antennas are provided herein. An example near-field antenna for transmitting radio frequency (RF) power transmission signals includes: (i) a conductive plate including one or more channels extending through the conductive place, a respective channel of the one or more channels having first and second segments, and (ii) a feed element configured to direct a plurality of RF power transmission signals towards the conductive plate. At least some of the RF power transmission signals cause an accumulation of RF energy within a near-field distance of the conductive plate. Furthermore, the accumulation of RF energy includes: (i) a first zone of accumulated RF energy at the first segment, and (ii) a second zone of accumulated RF energy at the second segment, the second zone of accumulated RF energy being distinct from the first zone of accumulated RF energy.

Near-field antennas for accumulating radio frequency energy at different respective segments included in one or more channels of a conductive plate

A method of fabricating a near-field antenna for transmitting radio frequency (RF) power transmission signals includes selecting a set of dimensions for one or more cutouts to be defined through a conductive plate of the near-field antenna. The conductive plate has opposing first and second planar surfaces. The method includes forming the one or more cutouts through the first and second surfaces of the conductive plate in a predefined arrangement. Each of the one or more cutouts has the set of dimensions. The method includes coupling an insulator to the first surface of the conductive plate, and coupling a feed element to the insulator.

Fabrication of near-field antennas for accumulating energy at a near-field distance with minimal far-field gain

The wireless power receiver includes at least one wire of a sound-producing device. The at least one wire configured for both conveying sound signals or securing at least part of the sound-producing device to a user, and receiving power waves. The wireless power receiver also includes power harvesting circuitry coupled with the at least one wire and a power source of an electronic device, like a battery. The power harvesting circuitry is configured to isolate the received power waves from the conveyed sound signals, convert the received power waves to usable energy, and provide the usable energy to the power source of the electronic device.

Systems, methods, and devices for utilizing a wire of a sound-producing device as an antenna for receipt of wirelessly delivered power

An example wireless power transmitter includes: (i) a ground plate, (ii) a conductive wire offset from the ground plate, the conductive wire forming a loop antenna that is configured to radiate an RF signal for wirelessly powering a receiver device, (iii) a plurality of feed elements extending from the ground plate to the conductive wire, each feed element being connected to the conductive wire at a different position on the conductive wire, and (iv) a power amplifier connected to one or more feed elements of the plurality of feed elements. The power amplifier is configured to selectively feed the RF signal to a respective feed element of the one or more feed elements based on a location of the receiver device relative to the plurality of feed elements.

Loop antennas with selectively-activated feeds to control propagation patterns of wireless power signals

A wireless charging system comprises (i) a transmitter structure comprising a first metallic core disposed in an opening of the transmitter structure and (ii) a receiver structure comprising a second metallic core disposed in an opening of the receiver structure. The transmitter structure is configured to carry one or more radio frequency (RF) signals to the first metallic core when the receiver structure is within a threshold distance from the transmitter structure. In addition, the receiver structure is configured to be excited by the one or more RF signals from the transmitter structure, whereby the one or more RF signals are transferred from the first metallic core to the second metallic core when the transmitter structure and the receiver structure are within the threshold distance from each other.

Transmitter and receiver structures for near-field wireless power charging

A microstrip antenna for use in a wireless power transmission system and a method for forming the microstrip antenna are described. The antenna includes a first multi-layer printed circuit board (PCB) that includes a top surface and a bottom surface. The top and bottom surfaces of the first multi-layer PCB include a first electrically conductive material. The antenna includes a second multi-layer PCB that includes a top surface and a bottom surface. The top and bottom surfaces of the second multi-layer PCT include a second electrically conductive material. A first plurality of vias each substantially pass through the top and bottom surfaces of the first multi-layer PCB. A second plurality of vias each substantially pass through the top and bottom surfaces of the second multi-layer PCB. The antenna further comprises a dielectric slab that is configured to receive the first multi-layer PCB and the second multi-layer PCB.

Microstrip antennas for wireless power transmitters

A wireless-power receiver is disclosed including a first antenna configured to transmit first near-field radio frequency (RF) energy, a second antenna configured to receive second near-field RF energy, and a communications component configured to provide a communication signal including data indicating a location of the first wireless-power receiver. The wireless-power receiver is configured to, in accordance with a determination that the wireless-power receiver is in direct contact with a surface of another wireless-power receiver, transmit the first near-field RF energy, via the first antenna, to the other receiver. The wireless-power receiver is further configured to, in accordance with a determination, based on the data indicating the location of the wireless-power receiver, that the wireless-power receiver is within a non-zero threshold distance from the other receiver or a wireless-power transmitter, receive the second near-field RF energy, via the second antenna, from the other receiver or from the wireless-power transmitter.

Near-field wireless power transmission techniques for a wireless-power receiver

Systems and methods for receiving near-field wireless power at an electronic device. An electronic device includes a receiver with one or more receiving antenna elements formed by respective conductive lines in a meandering pattern. Each receiving antenna element is configured to receive near-field radio-frequency signals radiated from a transmitting antenna element of a near-field power transmitter. The receiving antenna elements are configured to receive the near-field radio-frequency signals radiated from the transmitting antenna element of the near-field power transmitter when the electronic device is on a surface of the near-field power transmitter, and the transmitting antenna element is formed by respective conductive lines in a meandering pattern. The transmitting antenna element is selectively activated from among a plurality of available transmitting antenna elements of the near-field transmitter. A power-harvesting circuit of the receiver is configured to convert the near-field radio-frequency signals into usable power for the electronic device.

Electronic device with antenna elements that follow meandering patterns for receiving wireless power from a near-field antenna

An antenna include a resonator element configured to radiate a wireless signal and a substrate embedding the resonator. The resonator element may be a 3D resonator element. The 3D resonator element may be a helical resonator element.

3D ceramic mold antenna

Methods of constructing a wireless power receiver that uses a battery as an antenna are provided. The method includes power conversion circuitry that has a connector, the first end connected to at least a part of a battery, and the part of the battery is configured to act as an antenna and receive radio frequency (RF) power signals. The second end of the connector is opposite to the first end and connected to the power conversion circuitry. The power conversion circuitry converts the RF power signals into a direct current (DC) voltage that is used to charge the battery. Additional, some methods for constructing a wireless power receiver include a different connector between the power conversion circuitry and charging circuitry. The charging circuitry is electrically coupled with at least the part of the battery via another connector and provides DC voltage to charge the battery.

Growing community of inventors

Phoenix, AZ, United States of America

Alister Hosseini