Patent ID: 8634928

Claim:
An apparatus for wireless power transmission within an environment of unknown transmission characteristics comprising: a wireless power transmitter, the wireless power transmitter including: an adaptive match transmit circuit with a tunable impedance, which supplies a tunable impedance to a power signal having a frequency of at least 0.5 GHZ; and a wireless transmitter; and a wireless power receiver, the wireless power receiver including: multiple receive antennas configured to receive the transmitted power signal as a received power signal to maximize power transfer efficiency; an adaptive match receive circuit, wherein the adaptive match receive circuit receives the received power signal, and is configured to match the tunable impedance, in dependence upon the environment of unknown transmission characteristics, to thereby increase a gain of the received power signal, wherein the wireless power transmitter and the wireless power receiver are disposed a distance apart that ranges between wavelength/100 to wavelength*100.