An efficient architecture for battery-less terminals for internet of things

Wide proliferation of low cost IoT sensing terminals require inexpensive energy harvesting circuits integrated with RFID. The main emphasis of this paper has been the design of a switching circuit to avoid the use of separate antennas for harvesting and backscatter operations. The use of single antenna presented here also enables a compact design. Since this design considers the requirement of matching the antenna with differential output to the tag chip with similar interface and the harvester circuit with a single-ended input, this approach may lead to compact and efficient ubiquitous deployment of IoT terminals.