This disclosure provides a method and apparatus for controlling a plurality of radio-frequency (RF) power harvesters configured to generate power from received RF signals. A controller may monitor output power from the RF power harvesters and a sequence of reset signals. Based on the output powers and the sequence of reset signals, the controller may couple the RF power harvesters to a charge-storage device and one or more voltage regulators. In some implementations, the controller may also monitor RF envelope amplitude and couple the RF power harvesters to the charge storage device based on RF envelope amplitude.