所述滤波级 可实施椭圆形低通滤波器。
The filter stage (s) may implement an elliptical lowpass filter.
该电路包括第一滤波级、延迟元件、以及谐波滤波器。
The circuit comprises a first filtering stage; a delay element; and a harmonic filter.
所述滤波级(340)可提供针对所述输入信号的滤波。
The filter stage (340) may provide filtering for the input signal.
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