Class DE high-efficiency tuned power amplifier
Class DE high-efficiency tuned power amplifier
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DOI：
10.1109/81.481461
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发表时间：
1996-01-01
影响因子：
5.1
通讯作者：
Iked, K
中科院分区：
文献类型：
--
作者：
Koizumi, H;Suetsugu, T;Iked, K
提出了一种新型高频高效调谐功率放大器，并对其进行了理论分析和实验验证。它被称为DE类调谐功率放大器，因为它的电路拓扑非常类似于传统的D类放大器，并且当开关接通时，每个开关的操作都满足E类开关条件。E类开关条件是通过为每个开关分配一个并联电容器并在两个开关之间设置死区时间来实现的。这些条件实现了该放大器工作在比传统D类放大器更高的频率。开关电压应力保持在与传统D类放大器相同的水平。在1 MHz频率下，测量效率达96%以上。
A new type of high-frequency high-efficiency tuned power amplifier is proposed, analyzed and verified experimentally. It is called Class DE tuned power amplifier because its circuit topology is very similar to that of the conventional Class D amplifier and the operation of each switch satisfies the Class E switching conditions when switch turns on. Class E switching conditions are achieved by giving a shunt capacitor to each switch and making a dead-time between the switch-on-times. These conditions realize that the amplifier operates at higher frequency than conventional Class D amplifier. The switch voltage stress has kept on the same level to the conventional Class D amplifier. The measured efficiency was over 96% at 1 MHz.