Efficiency improved envelope amplifier using dual switching amplifiers and Design method thereof

The present invention relates to an improved efficiency of the envelope amplifier using the envelope input by controlling the switching current of the switching area, in accordance with the signal level by reducing power consumption with improved efficiency hybrid envelope amplifier of the conventional double structure switching amplifier. In other words, efficiency improved envelope amplifier using a dual switching amplifier according to the present invention is a high-efficiency hybrid envelope amplifier comprising a linear amplifier and a switching amplifier, two or more switching stages in which the switching amplifier selectively operate according to the input signal level It characterized in that it includes.