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. 16, 2017
Filed:
Mar. 11, 2015
Applicant:
Nxp B.v., Eindhoven, NL;
Inventor:
Anton Salfelner, Gratkorn, AT;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/02 (2006.01); G01R 17/02 (2006.01); G01R 27/04 (2006.01); H03H 7/40 (2006.01); H04B 1/04 (2006.01); H04B 1/18 (2006.01);
U.S. Cl.
CPC ...
G01R 17/02 (2013.01); G01R 27/04 (2013.01); H03H 7/40 (2013.01); H04B 1/0458 (2013.01); H04B 1/18 (2013.01);
Abstract
A system for measuring impedance is disclosed. The system is designed to be connected with an external unknown impedance. The system includes a reference signal generator, an impedance component coupled to the reference signal generator, a local oscillator configured to generate a signal of a selected frequency, a plurality of frequency mixers coupled to the impedance component and the local oscillator and a switch connected across the impedance component in such a way that the impedance component is bypassed when the switch is on.