Invention Grant
- Patent Title: Robust foreign objects detection
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Application No.: US15244107Application Date: 2016-08-23
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Publication No.: US10199881B2Publication Date: 2019-02-05
- Inventor: Vladimir A. Muratov , Patrick Stanley Riehl , William Plumb
- Applicant: MediaTek Inc.
- Applicant Address: TW Hsin-Chu
- Assignee: MediaTek Inc.
- Current Assignee: MediaTek Inc.
- Current Assignee Address: TW Hsin-Chu
- Agency: Wolf, Greenfield & Sacks, P.C.
- Main IPC: H02J50/12
- IPC: H02J50/12 ; H02J50/60 ; H02J7/02
Abstract:
An apparatus and method for performing foreign object detection for a wireless power transmitter. A matching network and transmit coil are energized, and a resonance is excited. The resonance is allowed to decay. A temporal characteristic of the decay is measured. The temporal characteristic is analyzed to determine whether a foreign object is coupled to an electromagnetic field generated by the transmit coil.
Public/Granted literature
- US20170117755A1 ROBUST FOREIGN OBJECTS DETECTION Public/Granted day:2017-04-27
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