Patent attributes
An RF power harvester comprising a dielectric substrate, having a first major surface and a second major surface, opposite to the first major surface; a connection for a rectifier on the first major surface; an antenna carried on the substrate for harvesting electrical power from a radio frequency electromagnetic field. The antenna comprising a first track of conductive material, carried on the first major surface and comprising a first end adjacent an edge of the substrate, a second end for connection to the rectifier, a first series of line sections between the first end and the second end and a first plurality of meanders, wherein a first line section of the series provides the first end and each subsequent line section is connected to its preceding line section by a meander and is of greater length than its preceding line section.