The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2011
Filed:
Aug. 28, 2008
Sadayuki Yoshitomi, Tokyo, JP;
Sadayuki Yoshitomi, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A method of extracting an equivalent circuit of a T-type transmission circuit measures signals of the first and second terminals to obtain S parameters, converts the S parameters into Z parameters to generate a T-type circuit by using the Z parameters, obtains first to third lead line resistors and first to third lead line inductors in the T-type circuit based on the Z parameters corresponding to constants of the T-type circuit, subtracts the Z parameters corresponding to the T-type circuit from the Z parameters corresponding to all of the equivalent circuit to calculate the Z parameters of a π-type circuit, converts the Z parameters of the π-type circuit into the Y parameters, and calculates first to third coupling capacitances based on the Y parameters.