CONFIGURABLE HARVESTER

According to a first aspect of the present disclosed subject matter, a configurable harvester energized by radio-frequency (RF) inputs and stores direct current (DC) in an accumulator, the harvester comprises: a plurality of gangs each comprising at least one rectifier powered by RF input; and at least one selector configured to interconnect the gangs either in series or in parallel; wherein an output of the interconnected gangs charges the accumulator with DC.