Abstract: Methods and systems are described for using detection coils to detect metallic or conductive foreign objects that can interfere with the wireless transfer of power from a power transmitter to a power receiver. In particular, the detection coils are targeted to foreign objects that are smaller than a power transmitter coil in the power transmitter.
Type:
Grant
Filed:
September 27, 2012
Date of Patent:
November 3, 2015
Assignee:
ConvenientPower, Ltd.
Inventors:
Xun Liu, Laurens Henricus Swaans, Ka Wai Paul Chan, Ho Kan Low, Wing Kwong Chan
Abstract: The Present Invention Provides an Antenna Network for Passively or Actively enhancing signal transmission or reception of one or more portable transceiver devices. The antenna network includes one or more antennas, each having a coupling portion and a radiating portion, the coupling portion being distributed across a coupling area and the radiating portion being located away from the coupling area, whereby signal transmission or reception of the one or more portable transceiver devices can occur through the radiating portion when the one or more portable transceiver devices are located within the coupling area.
Type:
Grant
Filed:
September 24, 2009
Date of Patent:
October 30, 2012
Assignee:
ConvenientPower, Ltd
Inventors:
Quan Xue, Shu Yuen Ron Hui, Kwun Chiu Wan
Abstract: The present invention provides a power transfer device for charging a wireless communication device having a communication bandwidth, and an associated method of transferring power. The device and method of the invention use a spread-spectrum technique to reduce or minimize interference signals within the communication bandwidth and within the power transfer device.
Type:
Grant
Filed:
February 3, 2010
Date of Patent:
October 23, 2012
Assignee:
ConvenientPower, Ltd.
Inventors:
Shu Yuen Ron Hui, Quan Xue, Kwun Chiu Wan