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http://dx.doi.org/10.5515/KJKIEES.2009.20.9.862

A Study on a Rectenna for Low Power Density at 2.45 GHz  

Park, Bong-Kook (Department of Electronic and Communication Engineering, Korea Maritime University)
Seo, Hong-Eun (Korea Aerospace Industries, Ltd.)
Cho, Ik-Hyun (Ubiquitous Gwangyang & Global IT Inst.)
Kim, Yea-Ji (Department of Electronic and Communication Engineering, Korea Maritime University)
Publication Information
Abstract
This paper presents a study on a rectenna for rectification of incident low power microwave signals with power densities less than 2 mW/$cm^2$ at 2.45 GHz. The proposed rectenna is designed and implemented by a rectifier with voltage doubler structure and a printed Yagi antenna which suppress re-radiation of the second order harmonic of fundamental frequency. The printed Yagi antenna has a gain of about 5 dB, and the measured conversion efficiencies of the rectenna are from 32 % to 42 % when its incident power levels are from 0 dBm to 14 dBm. The developed rectenna is expected to be useful in the power transmission system.
Keywords
Rectenna; Rectifier; RF-to-DC Conversion; Printed Yagi Antenna;
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