Design of a Highly Efficient Broadband Class-E Power Amplifier with a Low Q Series Resonance

- Journal title : Journal of electromagnetic engineering and science
- Volume 16, Issue 3, 2016, pp.143-149
- Publisher : The Korean Institute of Electromagnetic Engineering and Science
- DOI : 10.5515/JKIEES.2016.16.3.143

Title & Authors

Design of a Highly Efficient Broadband Class-E Power Amplifier with a Low Q Series Resonance

Ninh, Dang-Duy; Nam, Ha-Van; Kim, Hyoungjun; Seo, Chulhun;

Ninh, Dang-Duy; Nam, Ha-Van; Kim, Hyoungjun; Seo, Chulhun;

Abstract

This work presents a method used for designing a broadband class-E power amplifier that combines the two techniques of a nonlinear shunt capacitance and a low quality factor of a series resonator. The nonlinear shunt capacitance theory accurately extracts the value of class-E components. In addition, the quality factor of the series resonator was considered to obtain a wide bandwidth for the power amplifiers. The purpose of using this method was to produce a simple topology and a high efficiency, which are two outstanding features of a class-E power amplifier. The experimental results show that a design was created using from a 130 to 180 MHz frequency with a bandwidth of 32% and a peak measured power added efficiency of 84.8%. This prototype uses an MRF282SR1 MOSFET transistor at a 3-W output power level. Furthermore, a summary of the experimental results compared with other high-efficiency articles is provided to validate the advantages of this method.

Keywords

Broadband;Class-E Amplifier;High PAE;Nonlinear Capacitance;

Language

English

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