Design Of Antenna At 1.8Hz With Rectifying Circuit For RF Energy Harvesting

Mohd Nabil Imran, Kamaruzaman (2013) Design Of Antenna At 1.8Hz With Rectifying Circuit For RF Energy Harvesting. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This thesis presents the design of antenna at frequency 1.8GHz with a rectifying circuit for RF energy harvesting system. This system is a combination of a receiving antenna and integrated to a rectifying circuit that efficiently converts RF energy to DC signals for power harvested. Microstrip patch antenna design has been chosen as receiving antenna design due to its low profile, low cost and ease of fabrication. Two types of antenna i.e, rectangular patch and circular patch antenna design have been proposed in this project as a receiving part in the energy harvesting system. The design process of antenna has been done by taking consideration of all antenna parameters including return loss, gain, bandwidth and directivity. The RFDC energy conversion module is a voltage doubler or rectifier circuit used to convert the harvested energy received by the antenna from ambient RF sources to DC voltage. The RF signals received by the antenna will be transformed into DC signals by a diode based rectifying circuit or voltage multiplier. For this RF energy harvesting system design, the Villard voltage multiplier circuit is presented for energy conversion where the rectifier circuit. Lastly, the integration between the antenna and rectifying circuit is successful implemented to obtain a reliable DC output well as a proof of concept for the RF energy harvesting system.

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