Wireless Power Transfer


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Dennis Walker, Afraz Haider, Jonathan Arifin, Muhammad Jivani, Karan Kataria, Sesh Andavolu, Ziad Ghneim Wireless Power Transfer(WPT) Department of Electrical Engineering Erik Jonsson School of Engineering & Computer Science University of Texas at Dallas Richardson, Texas 75083-0688, U.S.A. dmw016500@utdallas.edu,aih051000@utdallas.edu, jxa053000@utdallas.edu,jivani@student.utdallas.edu,ksk023000@utdallas.edu Project Goals: Project Results: Project Overview: Project Conclusions/Outcomes: Research on the mediums for efficient wireless power transmission. Select an appropriate frequency that is compatible with commercial devices (2.4 GHz). Design, test and optimize a rectenna (rectifying antenna) matched to the source that converts Radio Frequency into usable DC. By the end of Senior Design II, it is our goal to power a small device wireslessly with our rectenna design. We initially researched on various ways by which power could be transmitted wirelessly including the induction coil method, laser beam and radio frequency. Timeline We decided on developing a wireless transmittal device based on radio frequency to complement the greater ranger factor in our design. We researched and studied in detail the different aspects of RF circuit design such as microstrip design, impedance matching and patch antenna design. Based on our knowledge from IEEE papers we designed a simple RF rectifying circuit and simulated it on AWR software. The simulation successfully displayed an efficiency of 55%. Using PCB 64 millimeter board we then designed a microstrip rectenna, consisting of a 2.4 GHz patch antenna impedance matched to a schottky diode and other lumped elements. Successfully simulated our rectenna design in AWR Microwave Office and VSS environment. Designed rectennas consisting of patched or detachable antennas. Laid out our rectenna design on the microstrip board. Could not sufficiently rectify Radio Frequency from antenna to illuminate LED. The rectenna design received a lot of noise distortion. We will reevaluate our design in the second part of the project. Overall, it was a useful learning experience that helped us gain knowledge related to wireless power applications.

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