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:
Dec. 12, 2017
Filed:
Nov. 18, 2015
Applicant:
Tektronix, Inc., Beaverton, OR (US);
Inventors:
Robert A. Marsland, Jr., Madison, WI (US);
Steven A. Jacobs, Madison, WI (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2013.01); G01R 25/00 (2006.01); G01J 1/44 (2006.01); H04B 10/63 (2013.01); H04B 10/073 (2013.01); H04B 10/61 (2013.01);
U.S. Cl.
CPC ...
G01R 25/00 (2013.01); G01J 1/44 (2013.01); H04B 10/0731 (2013.01); H04B 10/615 (2013.01); H04B 10/63 (2013.01);
Abstract
Embodiments of the invention include methods and devices for determining a phase angle offset between a phase angle of a local oscillator relative to a phase angle of a signal input of a Device Under Test (DUT). Some embodiments include a laser source and an optical phase adjustor, which may be embodied by a loop stretcher structured to controllably stretch a length of fiber optic cable, driven by a phase adjust driver. In other embodiments the phase angle offset information is conveyed to an oscilloscope for internal compensation.