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Near-field antenna for wireless power transmission with four coplanar antenna elements

A technology of antenna elements and near-field antennas, applied in transmission systems, electrical components, near-field transmission systems, etc., can solve long-term problems

Active Publication Date: 2021-04-09
ENERGOUS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration results in processing delays that cause these charging pads to operate more slowly than users of such pads would expect (eg, wireless charging and adjustments made during wireless charging take longer)

Method used

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  • Near-field antenna for wireless power transmission with four coplanar antenna elements
  • Near-field antenna for wireless power transmission with four coplanar antenna elements
  • Near-field antenna for wireless power transmission with four coplanar antenna elements

Examples

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Embodiment Construction

[0129] Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the various described embodiments. It will be apparent, however, to one of ordinary skill in the art that various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments.

[0130] Figure 1A is a block diagram of an RF wireless power transfer system according to some embodiments. In some embodiments, RF wireless power transfer system 150 includes RF charging pad 100 (also referred to herein as near-field (NF) charging pad 100 or RF charging pad 100 ). In some embodiments, the RF charging pad 100 includes an RF power transmitter i...

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PUM

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Abstract

A near-field antenna is provided, which includes: a reflector and four distinct antenna elements, offset from the reflector, each of the four distinct antenna elements following respective meandering patterns. Two antenna elements of the four antenna elements form a first dipole antenna along a first axis, and another two antenna elements of the four antenna elements form a second dipole antenna along a second axis perpendicular to the first axis. The near-field antenna further includes: (i) a power amplifier configured to feed electromagnetic signals to one of the dipole antennas, (ii) an impedance-adjusting component configured to adjust an impedance of one of the dipole antennas, and (iii) switch circuitry coupled to the power amplifier, the impedance-adjusting component, and the dipole antennas. The switch circuitry is configured to switchably couple the first dipole antenna to the power amplifier and the second dipole antenna to the impedance-adjusting component, and vice versa.

Description

technical field [0001] Embodiments herein relate generally to near-field wireless power transfer systems (e.g., antennas, software, and equipment used in such systems), and more specifically, to a wireless power transmission system with four coplanar antenna elements. Transmitting near-field antenna, each of the four coplanar antenna elements follows a respective meander pattern. Background technique [0002] Conventional charging pads utilize induction coils to generate the magnetic field used to charge the device. The user typically must place the device at a specific location on the charging mat, and cannot move the device to a different location on the charging mat without interrupting or terminating charging of the device. This results in a frustrating experience for many users as they may not be able to position the device in the exact correct position on the mat to begin charging their device. Often times, a user may think their device has been positioned correctly,...

Claims

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Application Information

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IPC IPC(8): H04B5/00
CPCH02J50/23H04W4/80H02J7/0042H02J50/40Y02B40/00H04B5/79H02J50/20
Inventor A·侯赛尼
Owner ENERGOUS CORPORATION