Invention Grant
- Patent Title: Methods and apparatus for out of phase field mitigation
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Application No.: US14975524Application Date: 2015-12-18
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Publication No.: US10033226B2Publication Date: 2018-07-24
- Inventor: Mark White, II , Seong Heon Jeong , William Henry Von Novak, III
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Main IPC: H01F27/42
- IPC: H01F27/42 ; H02J50/12 ; H01F38/14 ; H02J7/02 ; H04B5/00 ; H02J50/20 ; H02J50/70 ; H02J50/90 ; H02J50/80 ; H01F27/36

Abstract:
This invention describes a method and apparatus for providing wireless power. The methods and systems disclosed consist of a first coil having at least one loop forming an inner area inside boundaries of the at least one loop and an outer area outside the boundaries of the at least one loop, the first coil configured to generate a first alternating magnetic field for charging or powering a wireless power device, the first alternating magnetic field having a first magnetic field component with a first phase in the inner area, the first alternating magnetic field also having a second magnetic field component with a second phase in the outer area, and the second phase different from the first phase. In some aspects, the methods and systems comprise a second coil comprising a portion within the outer area, the second coil configured to reduce a magnitude of the second magnetic field component.
Public/Granted literature
- US20160329748A1 METHODS AND APPARATUS FOR OUT OF PHASE FIELD MITIGATION Public/Granted day:2016-11-10
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