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:
Nov. 04, 2003
Filed:
Dec. 12, 2001
Arthur J. Metz, Gervais, OR (US);
Daniel G. Knierim, Beaverton, OR (US);
Richard J. Huard, Beaverton, OR (US);
Tektronix, Inc., Beaverton, OR (US);
Abstract
An integrated circuit includes a termination for a transmission line having a predetermined characteristic impedance. The termination includes a controllable impedance circuit, including a multiplier, coupled to the transmission line. A reference impedance, placed external to the integrated circuit, has an impedance related to the characteristic impedance of the transmission line. A control circuit is coupled between the reference impedance and the controllable impedance circuit, and conditions the controllable impedance circuit to have the characteristic impedance responsive to the reference impedance