13.56 MHz E类功率放大器，效率94.6%，输出功率31瓦，适用于射频加热应用

2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) Pub Date : 2014-05-14 DOI:10.1109/ECTICON.2014.6839809

Pattrawut Srimuang, N. Puangngernmak, S. Chalermwisutkul

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引用次数: 24

摘要

射频功率放大器(RF PA)广泛应用于无线通信、无线电力传输(WPT)和射频加热等领域。一般来说，功率放大器工作等级的选择是基于对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，可以使用E类开关模式放大器。E类的切换模式操作以简单的拓扑结构提供了高效率，从而实现了生产和系统运行的最佳成本。本文设计并实现了一种带并联负载电路的高功率、高效率13.56 MHz E类功率放大器。功率器件选择了LDMOS。当最大输出功率为44.92 dBm (31 W)时，制造的E级PA可提供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)带epa级并联负载电路。

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13.56 MHz class E power amplifier with 94.6% efficiency and 31 watts output power for RF heating applications

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.

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2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)

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