Invention Grant
- Patent Title: High-frequency signal detector
- Patent Title (中): 高频信号检测器
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Application No.: US12153815Application Date: 2008-05-23
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Publication No.: US07696789B2Publication Date: 2010-04-13
- Inventor: Naohiro Matsui
- Applicant: Naohiro Matsui
- Applicant Address: JP Kawasaki, Kanagawa
- Assignee: NEC Electronics Corporation
- Current Assignee: NEC Electronics Corporation
- Current Assignee Address: JP Kawasaki, Kanagawa
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2007-139334 20070525
- Main IPC: H03D3/00
- IPC: H03D3/00

Abstract:
Disclosed is a high-frequency signal detector circuit including a diode detector circuit for detecting an input signal by diode detection; a differential-input/differential output amplifier with a common mode feedback circuit, the amplifier including a differential amplifying circuit for differentially receiving outputs of the diode detector circuit and outputting a differential output signal, and a common mode feedback circuit for controlling the differential amplifying circuit in such a manner that a voltage corresponding to a mid-point of the differential output signal from the differential amplifying circuit will take on a voltage identical with a prescribed voltage; and a differential-input/single-ended output amplifier for receiving the differential output signal of the differential amplifying circuit and outputting a single-ended output signal. The circuit further includes a binarization circuit for receiving the output signal of the differential-input/single-ended output amplifier and comparing the output signal with a threshold voltage to thereby binarize and output the signal. The threshold voltage is adjustably set.
Public/Granted literature
- US20090021282A1 High-frequency signal detector Public/Granted day:2009-01-22
Information query
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