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http://dx.doi.org/10.5515/KJKIEES.2011.22.11.1137

Analysis of Transistor's Circuit Coefficients on the Performance of Active Frequency Multipliers  

Park, Young-Cheol (Department of Electronics Engineering, Hankuk University of Foreign Studies)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.22, no.11, 2011 , pp. 1137-1140 More about this Journal
Abstract
In this paper, the optimal condition for efficient active frequency multipliers is analyzed. This analysis is based on the effects from transistor nonlinear coefficients, harmonic impedances, and output parasitic components. From the analysis, normalized harmonic power is estimated with the clipping condition of a commercial transistor, and the condition for high conversion efficiency is suggested. From the analysis, a class-F frequency tripler was implemented for the output at 2.475 GHz, showing the maximum efficiency of 22.9 % and the maximum conversion gain of 9.5 dB.
Keywords
Efficiency; Frequency Multiplier; Power Amplifier;
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