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http://dx.doi.org/10.5515/JKIEES.2016.16.3.143

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

Ninh, Dang-Duy (School of Information and Telecommunication Engineering, Soongsil University)
Nam, Ha-Van (School of Information and Telecommunication Engineering, Soongsil University)
Kim, Hyoungjun (School of Information and Telecommunication Engineering, Soongsil University)
Seo, Chulhun (School of Information and Telecommunication Engineering, Soongsil University)
Publication Information
Journal of electromagnetic engineering and science / v.16, no.3, 2016 , pp. 143-149 More about this Journal
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;
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