Devices and methods for reducing mutual coupling effects in wireless power transmission systems

  • US 10,680,319 B2
  • Filed: 01/06/2017
  • Issued: 06/09/2020
  • Est. Priority Date: 01/06/2017
  • Status: Active Grant
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First Claim
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1. A transmitter device for a wireless charging system, comprising:

  • at least two antennas configured to direct electromagnetic waves toward a wireless power receiver such that the electromagnetic waves interfere constructively at a location proximate to the wireless power receiver; and

    a housing structure configured to receive the at least two antennas, the housing structure including;

    a metallic base;

    a first set of isolating components extending upwardly relative to the metallic base and defining a first region of the housing structure that is configured to receive a first antenna of the at least two antennas; and

    a second set of isolating components extending upwardly relative to the metallic base and defining a second region of the housing structure that is configured to receive a second antenna of the at least two antennas, the second set including at least some isolating components distinct from those in the first set;

    wherein the first and second sets of isolating components are configured (i) to create a physical gap in the housing structure between the first and second antennas, and (ii) to reduce a mutual coupling between the first antenna and the second antenna, andwherein the first and second sets of isolating components comprise respective pluralities of metallic cylinders.

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