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Modified Patch Antenna with Matching Network for Energy Harvesting at Multiple Frequencies

This paper describes a design of RF energy harvesting circuit which works at multiple frequencies. The circuit is based on a modified patch antenna which has dual operating points followed by a multi-stage matching network and a rectifying circuit. The RF energy harvesting circuit is designed and fabricated. Simulation results and some measurements which are taken are presented in this paper. It was observed that the design circuit has good operation at the frequency of 1.7 GHz and acceptable distinct operation at frequencies of2.41 GHz and 2.62 GHz.