# US 2023/0057092 A1 · Near-Field Antenna for Wireless Power Transmission with Antenna Elements that Follow Meandering Patterns

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- Number: US 2023/0057092 A1
- Document ID: US20230057092A1
- Status: Published application
- Kind: A1
- Application number: 17/853,777
- Filed: 2022-06-29
- Published: 2023-02-23
- Earliest claimed: 2015-12-24
- Assignees: Energous Corporation
- Applicants: Energous Corporation
- Inventors: Alister Hoss
- Web page: https://patentgrep.com/patent/US20230057092A1

## CPC

- H01F 38/14: Inductive couplings
- H02J 7/70: characterised by the mechanical construction
- H02J 50/20: using microwaves or radio frequency waves
- H02J 50/23: characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas
- H02J 50/40: using two or more transmitting or receiving devices (H02J50/50 takes precedence)
- H02J 50/402: {the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas}
- H04B 5/20: characterised by the transmission technique; characterised by the transmission medium
- H04B 5/24: Inductive coupling
- H04B 5/43: Antennas
- H04B 5/45: Transponders
- H01F 27/2804: {Printed windings}
- H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices}
- H04B 5/79: for data transfer in combination with power transfer
- H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
- Y02B 40/00: Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

A near-field antenna is provided, which includes: a first dipole antenna, formed along a first axis, having a first meandering shape and a second dipole antenna, formed along a second axis different from the first axis, having a second meandering shape. The antenna also includes (i) a power amplifier configured to feed electromagnetic signals to at least one of the first and second dipole antennas, (ii) an impedance-adjusting component configured to adjust an impedance of at least one of the first and second dipole antennas, and (iii) switch circuitry configured to switchably couple the first dipole antenna, the power amplifier, the second dipole antenna, and the impedance-adjusting component.

## Claims

### Claim 1

A near-field wireless-power-transmission system comprising:
a near-field antenna including:
a first dipole antenna; and
a second dipole antenna;
a power amplifier configured to feed electromagnetic signals to at least one of the first and second dipole antennas;
an impedance-adjusting component configured to adjust an impedance of at least one of the first and second dipole antennas; and
switch circuitry coupled to the power amplifier, the impedance-adjusting component, and the first and second dipole antennas, the switch circuitry being configured to:
(i) switchably couple the first dipole antenna to the power amplifier and the second dipole antenna to the impedance-adjusting component, or
(ii) switchably couple the second dipole antenna to the power amplifier and the first dipole antenna to the impedance-adjusting component.