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如何判断滤波器的阶数
更新时间: 2020-09-24 00:00:00  

滤波器的阶数判断依据:电感和电容的总数,便是滤波器的阶数。

滤波器的阶数是指在滤波器的传递函数中有几个极点。阶数同时也决定了转折区的下降速度,一般每增加一阶,即一个极点,就会增加20dBDec,即一个斜率。比如,一个电感和一个电容可以构成二阶低通滤波器和二阶高通滤波器。

关键词: 如何 判断 滤波器

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