Abstract
In this letter, a power harvester with a Schottky diode and a photodiode has been designed to harvest ambient radiofrequency (RF) and solar power in a cooperative way. The RF power is collected by a coplanar waveguide-fed circularly polarized antenna operating in wifi band and converted into the dc one by a rectifying circuit composed of the Schottky diode, and meanwhile the solar energy is harvested by the photodiode to bias the Schottky diode in the rectifying circuit. With the RF and solar power simultaneously injecting into the rectifying circuit, the resulting power conversion efficiency is greatly increased for the same RF and solar power levels in a range from −20 to 0 dBm. The prototype of the proposed harvester is fabricated, and the measured results demonstrate a maximal total PCE of 73% and a maximal output power of 1450 <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> W.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.