In a wireless controller, energy harvesting is applied to a received RF signal and the same signal is used in the upconversion of a transmission signal

摘要

A wireless control device comprises an antenna (5) and a power harvester (2) to generate power for the device from a radio frequency signal (7) incident on the antenna. The device further comprises an upconverter stage (23); the upconverter stage comprising a first port (21) to receive a control signal (13) to be upconverted and a second port (34) to receive the incident radio frequency signal (7) and to output the upconverted control signal at upper and lower sideband frequencies (8). The antenna is coupled to the second port. The wireless control device may be a wireless keyboard or mouse. The upconverter may use a mixer 23 or a parametric amplifier (Fig. 9).