Title: Method and apparatus for quadrature detection and MRI system
Application Number: 200410090532 Application Date: 2004.10.29
Publication Number: 1611959 Publication Date: 2005.05.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01R33/28,H03D3/00
Applicant(s) Name: GE Med Sys Global Tech Co. LLC Address:
Inventor(s) Name:
Attorney & Agent: yang kai liang yong
Abstract:
     Provided is a quadrature detector wherein unnecessary frequency components are not produced, the following procedure is carried out: an analog input signal is converted into a digital signal f 1 (t), and the signal f 1 (t) is delayed by a sampling time tau to form a signal f 2 (t). Then, letting the reference frequency be omega 0 , the I- and Q-components in quadrature detection by the following expression.
Time: 15
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