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http://dx.doi.org/10.5515/KJKIEES.2011.22.8.805

Highly Efficient 13.56 MHz, 300 Watt Class E Power Transmitter  

Jeon, Jeong-Bae (School of Information & Communication Engineering, Sung Kyun Kwan University)
Seo, Min-Cheol (School of Information & Communication Engineering, Sung Kyun Kwan University)
Kim, Hyung-Chul (School of Information & Communication Engineering, Sung Kyun Kwan University)
Kim, Min-Su (School of Information & Communication Engineering, Sung Kyun Kwan University)
Jung, In-Oh (School of Information & Communication Engineering, Sung Kyun Kwan University)
Choi, Jin-Sung (Signal & Systems Lab, Radio Signal Processing Group, Samsung Advanced Institute of Technology)
Yang, Youn-Goo (School of Information & Communication Engineering, Sung Kyun Kwan University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.22, no.8, 2011 , pp. 805-808 More about this Journal
Abstract
This paper presents a design of high-efficiency and high-power class E power transmitter. The transmitter is composed of 300 Watt class E power amplifier and AC-DC converter. The AC-DC converter converts 220 V and 60 Hz AC to a 290 V DC. The generated DC voltage is directly applied to a bias of the class E power amplifier. Because the converter does not have DC-DC converter unit, it has very high conversion efficiency of about 98.03 %. To minimize the loss at the output of the power amplifier, high-Q inductor was implemented and deployed to the output resonant circuit. As a result, the 13.56 MHz class E power amplifier has a high power-added efficiency of 84.2 % at the peak output power of 323.6 W. The overall efficiency of class E power transmitter, including the AC-DC converter, is as high as 82.87 %.
Keywords
Class E Amplifier; AC-DC Converter; High-Efficiency Transmitter; High-Q Inductor;
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