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In/Output Matching Network Based on Novel Harmonic Control Circuit for Design of High-Efficiency Power Amplifier  

Choi, Jae-Won (Department of Information and Telecommunication Engineering, Soongsil University)
Seo, Chul-Hun (Department of Information and Telecommunication Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.46, no.2, 2009 , pp. 141-146 More about this Journal
Abstract
In this paper, a novel harmonic control circuit has been proposed for the design of high-efficiency power amplifier with Si LDMOSFET. The proposed harmonic control circuit haying the short impedances for the second- and third-harmonic components has been used to design the in/output matching network. The efficiency enhancement effect of the proposed harmonic control circuit is superior to the class-F or inverse class-F harmonic control circuit. Also, when the proposed harmonic control circuit has been adapted to the input matching network as well as the output matching network, the of ficiency enhancement effect of the proposed power amplifier has increased all the more. The measured maximum power added efficiency (PAE) of the proposed power amplifier is 82.68% at 1.71GHz band. Compared with class-F and inverse class-F amplifiers, the measured maximum PAE of the proposed power amplifier has increased in $5.08{\sim}9.91%$.
Keywords
Power amplifier; high-efficiency; novel harmonic control circuit; class-F; inverse class-F; LDMOSFET;
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