13.56 MHz class E power amplifier with 94.6% efficiency and 31 watts output power for RF heating applications
13.56 MHz class E power amplifier with 94.6% efficiency and 31 watts output power for RF heating applications
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13.56%20MHz%20class%20E%20power%20amplifier%20with%2094.6%%20efficiency%20and%2031%20watts%20output%20power%20for%20RF%20heating%20applications
DOI：
10.1109/ecticon.2014.6839809
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Chalermwisutkul
中科院分区：
文献类型：
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作者：
Pattrawut Srimuang;N. Puangngernmak;S. Chalermwisutkul
射频功率放大器 (RF PA) 广泛用于多种应用，例如：无线通信、无线电力传输（WPT）和射频加热。一般来说，功率放大器工作等级的选择基于线性度和功率效率的要求。对于线性度不是关键问题而需要高效率的应用，例如开关模式放大器E级适合。 E 类开关模式操作通过简单的拓扑提供高效率，从而实现最佳的生产和系统操作成本。这项工作介绍了具有并联负载电路的高功率和高效率 13.56 MHz E 类功率放大器的设计和实现。选择LDMOS作为功率器件。当向负载提供 44.92 dBm (31 W) 的最大输出功率时，制造的 E 类 PA 提供 94.6% 的功率附加效率 (PAE) 和 21.92 的功率增益。工业、科学和医疗 (ISM) 频段 E 类 PA，具有并联负载电路。
Radio frequency power amplifiers (RF PA) are widely used for several applications e.g. wireless communication, wireless power transmission (WPT) and radio frequency heating. In general, the choice of power amplifier's operating class is based on requirements regarding linearity and power efficiency. For applications in which linearity is not a critical issue whereas high efficiency is desired, switched-mode amplifier e.g. class E is suitable. Switched-mode operation of class E offers high efficiency with a simple topology, leading to optimal costs of production and system operation. This work presents design and implementation of a high power and high efficiency 13.56 MHz class E power amplifier with parallel load circuit. As a power device, LDMOS was chosen. The fabricated class E PA provides Power-Added Efficiency (PAE) of 94.6% with 21.92 power gain when maximum output power of 44.92 dBm (31 W) is delivered to the load. Industrial, Scientific and medical (ISM) bands Class E PA with parallel load circuit.