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:
Sep. 19, 2017
Filed:
Jul. 26, 2011
Applicants:
Martin Hassler, Munich, DE;
Wolfgang Richter, Haar, DE;
Inventors:
Martin Hassler, Munich, DE;
Wolfgang Richter, Haar, DE;
Assignee:
Rohde & Schwarz GmbH & Co. KG, Munich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 18/00 (2006.01); G01R 27/28 (2006.01); G01R 35/00 (2006.01); G06F 17/00 (2006.01);
U.S. Cl.
CPC ...
G01D 18/006 (2013.01); G01R 27/28 (2013.01); G01R 35/007 (2013.01); G06F 17/00 (2013.01);
Abstract
A calibration device for a network analyzer with several ports provides a calibration circuit, which is connected in each case via a terminal port respectively to one of the several ports of the network analyzer. A first transistor and a second transistor are connected in series to each terminal port. In this context, both transistors are connected by their common connection to the terminal port. The first transistor and/or the second transistor is operated as an adjustable load.