选择题:若调制信号的频率是从300Hz~3000Hz,那么,窄带调频时,调频电路中带通滤波器的通频带宽度至少应为()

题目内容:

若调制信号的频率是从300Hz~3000Hz,那么,窄带调频时,调频电路中带通滤波器的通频带宽度至少应为()

A.3000Hz

B.5400Hz

C.600Hz

D.6000Hz

参考答案:

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