A battery-less, wireless mote for scavenging wireless power at UHF (470–570 MHz) frequencies

In this paper, a novel power scavenging mote to harness wireless power in the UHF frequencies between 470 and 570 MHz is presented. A broadband monopole antenna prototype inkjet printed on a paper based substrate is used transduce the incident wireless power from its Electromagnetic wave form to a RF AC signal. A conjugately matched voltage multiplier and RF transformer are used to rectify and store the RF input power in a low leakage capacitor for powering on a microcontroller unit and wireless transceiver end-device thereby making the entire operation of this mote battery-less.