TECHNIQUES FOR ENERGY HARVESTING USING A SQUARE WAVEFORM

Methods, systems, and devices for wireless communications are described. An energy harvesting device, such as a user equipment (UE) or a radio frequency identification (RFID) tag, may receive, from an energy transfer device such as a network node, an energy harvesting signal providing power for the energy harvesting device. The energy harvesting device may transmit, based on the energy harvesting signal, a control message indicating one or more parameters for a square waveform for energy harvesting, a requested duty cycle for the square waveform, or both. The energy harvesting device may receive the square waveform in response to the control message.