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:
Mar. 05, 2013
Filed:
Sep. 12, 2011
Peter J. Hopper, San Jose, CA (US);
Peter Smeys, San Jose, CA (US);
William French, San Jose, CA (US);
Andrei Papou, San Jose, CA (US);
Aditi Dutt Chaudhuri, Santa Clara, CA (US);
Peter J. Hopper, San Jose, CA (US);
Peter Smeys, San Jose, CA (US);
William French, San Jose, CA (US);
Andrei Papou, San Jose, CA (US);
Aditi Dutt Chaudhuri, Santa Clara, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A galvanic isolation system provides galvanic isolation in digital transfer integrated circuits by using conductivity modulation of the semiconductor substrate. Modulation of the conductivity of the substrate affects eddy current losses of a (differential) RF inductor that is isolated from the substrate by a sufficient amount of dielectric material, which provides a basis for signal transfer from the modulated substrate to the inductor across the isolation barrier.