The high pass filter acts as a dc offset correction loop which eliminates the serial effect of many amplifier sections on dc offsets arising within components while maintaining a sufficiently low cutoff frequency to avoid adversely impacting information integrity at higher frequencies。
Each one of the low pass filters 24 is adapted to have the cutoff frequency thereof switch from an initial high cutoff frequency when the receiver 10 is turned on (during an initial phase of operation as when the amplifiers 22 are turned on or when there is a large step change in the gain of such amplifiers 22) to a subsequent lower, normal operating cutoff frequency a predetermined time after an initial time period, in response to a control signal produced on line 26 in response to a pulse generator 28。
能力有限,这两个句子太长,希望高手能帮我分解下,就是帮我在里面打上几个标点符号,要不句子太长,以我的能力翻不出来啊。谢谢拉! |
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