公开(公告)号：US09535088B2

公开(公告)日：2017-01-03

申请号：US14779622

申请日：2014-03-04

Applicant: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY

Inventor： Takeshi Fukuma ,  Kazuki Miyata

IPC: G01Q60/32 ,  G01Q20/00 ,  H03D3/00 ,  H03D7/16 ,  G01Q10/06

CPC classification number: G01Q20/00 ,  G01Q10/065 ,  G01Q60/32 ,  H03D3/007 ,  H03D5/00 ,  H03D7/165

Abstract: A signal detection circuit includes: a VCO that generates a reference signal; a complex signal generation circuit that generates a complex signal from an input signal and the reference signal; a vector operation circuit that calculates an argument of the complex signal by performing a vector operation; and a subtracting phase comparator that compares the argument with a phase of the reference signal by calculating a difference between the argument and the phase of the reference signal, wherein the complex signal generation circuit includes: a multiplication circuit that multiplies the input signal by the reference signal; and an HPF that removes a DC component from a signal output from the multiplication circuit.

Abstract translation: 信号检测电路包括：产生参考信号的VCO; 复信号发生电路，从输入信号和参考信号产生复信号; 矢量运算电路，通过执行矢量运算来计算复信号的自变量; 以及减法相位比较器，通过计算参考信号的参数和相位之间的差，将参数与参考信号的相位进行比较，其中复数信号产生电路包括：乘法电路，将输入信号乘以参考 信号; 以及从乘法电路输出的信号中去除直流分量的HPF。