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你好,在有严苛要求的专业视频之类应用当中,需要在某一高额定频率之下能够保持相对平坦的带宽和线性相位。、
只是说明3 dB带宽是不够的,习惯做法是指定0.1 dB带宽平坦度。
这意味着在额定的0.1 dB带宽频率之下,纹波不超过0.1 dB。