. At the high frequency end of the spectrum are optical techniques that use lasers send power via a collimated beam of light to a remote detector where the received photons are converted to electrical energy Efficient transmission over large distances is possible with this approach, however, complicated pointing and tracking mechanisms are needed to maintain proper alignment between moving transmitters and/or receivers. In addition, objects that get between the transmitter and receiver can block the beam interrupting the power transmission and, depending on the power level possibly causing harm At microwave frequencies, a similar approach can be used to efficiently transmit power over large distances using the radiated EM field from appropriate antennas. [2] However, similar caveats