Amplitude detecting device

申请公布号：US8014747(B2)

申请号：US20080023247

申请日期：2008.01.31

申请公布日期：2011.09.06

申请人：

FUJITSU LIMITED

发明人：NAKAMOTO HIROYUKI

分类号：H04B1/16

主分类号：H04B1/16

摘要：An amplitude detecting device of the present art increases the slope of the change in output voltage corresponding to the change in amplitude of an input signal to improve the detection accuracy of amplitude change of input signal, without changing the dynamic range of the device. An amplitude detecting device of the art includes a plurality of amplifiers that amplify an input signal according to a predefined amplification rate, an amplitude detector that detects the amplitude of the signal amplified by the amplifiers, an operation circuit that operates the signal detected by the amplitude detector and obtains the amplitude value of the input signal, and a switch circuit that sets whether the signal detected by the amplitude detector is to be transmitted to the operation circuit or not.

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