Patent ID: 9653948
Date: 2017-05-16
CPC Classifications: B60L,H01Q,H02J,H03F,H03J,H03L,H04B,Y02T

Claim:
1. A wireless electric field power transmission system for powering a load, the system comprising: a transmitter including a transmitter antenna and a single high quality factor (Q-factor) coil separate from the transmitter antenna, the transmitter antenna including at least two elongate conductive plates defining a volume, the at least two elongate conductive plates configured to resonate with the coil to generate a resonant reactive near electric field in the volume, wherein each plate of the transmitter antenna has the shape of a rectangle having one inner short side, one outer short side, one inner long side and one outer long side, and wherein the at least two elongate conductive plates of the transmitter antenna are approximately parallel along either their outer long sides or their inner long sides; and at least one receiver electrically connectable to the load including a receiver antenna including at least two elongate conductive plates, wherein each plate of the receiver antenna has the shape of a rectangle having one inner short side, one outer short side, one inner long side and one outer long side, wherein the at least two elongate conductive plates of the receiver antenna are approximately parallel along either their outer long sides or their inner long sides, wherein the transmitter antenna is configured to transfer power wirelessly to the at least one receiver via a resonant reactive near electric field coupling when the at least one receiver is within the volume, and wherein a length of each of the at least two elongate conductive plates of the transmitter antenna and a frequency of the system are selected such that a majority of power transferred to the at least one receiver is from an electric field component of an electromagnetic field as in a capacitive coupling wireless power transfer scheme.