发明公开
EP2951921A2 ENVELOPE TRACKING MODULATOR WITH FEEDBACK 有权
带反馈的包络跟踪调制器

ENVELOPE TRACKING MODULATOR WITH FEEDBACK
摘要:
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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