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发明授权
CN105103440B 具有反馈的包络追踪调制器 有权

具有反馈的包络追踪调制器
摘要：
本发明揭示一种经布置以依据参考信号产生经调制的供应电压的经包络追踪调制的供应器，其包括用于追踪所述参考信号中的低频变化并且包含切换模式电力供应器的低频路径，用于追踪所述参考信号中的高频变化并且包含线性放大器的校正路径，从所述线性放大器的输出端到所述线性放大器的输入端的反馈路径，以及用于组合所述切换模式电力供应器的输出与所述线性放大器的所述输出以产生经调制的供应电压的组合器。
摘要（英）：

There is disclosed an envelope tracking modulated supply arranged to generate a modulated supply voltage in dependence on a reference signal, comprising a low frequency path for tracking low frequency variations in the reference signal and including a switched mode power supply, a correction path for tracking high frequency variations in the reference signal and including a linear amplifier, a feedback path from the output of the linear amplifier to the input of the linear amplifier, and a combiner for combining the output of the switched mode power supply and the output of the linear amplifier to generate a modulated supply voltage.

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