WIRELESS POWER ENABLED ENCLOSURES FOR MOBILE DEVICES
The disclosure features mobile electronic devices configured to be wirelessly charged, the devices featuring a receiver resonator configured to capture oscillating magnetic flux, the receiver resonator including: a conductive material layer defining an aperture and a slit extending from the aperture to an outer edge of the conductive material layer, where the conductive material layer forms a back cover of the mobile electronic device, and an inductor having first and second conductor traces, the first trace coupled to a first portion of the conductive material layer adjacent to a first side of the slit and the second trace coupled to a second portion of the conductive material layer adjacent to a second side of the slit.
1 . A mobile electronic device configured to be wirelessly charged, the device comprising:
a receiver resonator configured to capture oscillating magnetic flux, the receiver resonator comprising:
a conductive material layer defining an aperture and a slit extending from the aperture to an outer edge of the conductive material layer, wherein the conductive material layer forms a back cover of the mobile electronic device; and
an inductor, having first and second conductor traces, the first trace coupled to a first portion of the conductive material layer adjacent to a first side of the slit and the second trace coupled to a second portion of the conductive material layer adjacent to a second side of the slit.
2 . The device of claim 1 wherein the conductive material layer is substantially in a first plane and the inductor is substantially in a second plane and wherein the first and second planes are substantially parallel to one another.
3 . The device of claim 2 further comprising a magnetic material layer in a third plane parallel to the second plane, wherein the magnetic material layer is positioned opposite the conductive material layer with respect to the inductor.
4 . The device of claim 3 wherein a first edge of the magnetic material layer extends to a first portion of the outer edge of the conductive material layer.
5 . The device of claim 4 wherein the magnetic material is configured to cover the slit.
6 . The device of claim 4 wherein a second edge of the magnetic material layer extends to a second portion of the outer edge of the conductive material layer.
7 . The device of claim 3 further comprising a metallic material layer in a fourth plane parallel to the third plane.
8 . The device of claim 7 wherein the metallic material layer is configured to cover a battery of the mobile electronic device.
9 . The device of claim 1 wherein the inductor is a coil printed on a circuit board.
10 . A method comprising:
defining an aperture in a conductive material layer;
defining a slit extending from the aperture to an outer edge of the conductive material layer; and
coupling a first trace of an inductor to a first portion of the conductive material layer adjacent to a first side of the slit and a second trace to a second portion of the conductive material layer adjacent to a second side of the slit.
11 . A wireless power system comprising:
a transmitter comprising a resonator coil in a first plane, wherein when the resonator coil is driven with an oscillating current, the resonator coil generates an oscillating magnetic field with a dipole moment orthogonal to the first plane;
a receiver comprising a receiver resonator configured to capture oscillating magnetic flux, the receiver resonator comprising:
a conductive material layer defining an aperture and a slit extending from the aperture to an outer edge of the conductive material layer, wherein the conductive material layer forms a back cover of the mobile electronic device; and
an inductor, having first and second conductor traces, the first trace coupled to a first portion of the conductive material layer adjacent to a first side of the slit and the second trace coupled to a second portion of the conductive material layer adjacent to a second side of the slit.
12 . A receiver resonator configured to capture oscillating magnetic flux, the receiver resonator comprising:
a conductive material layer defining an aperture and a slit extending from the aperture to an outer edge of the conductive material layer, wherein the conductive material layer forms a back cover of the mobile electronic device; and
an inductor, having first and second conductor traces, the first trace coupled to a first portion of the conductive material layer adjacent to a first side of the slit and the second trace coupled to a second portion of the conductive material layer adjacent to a second side of the slit.