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.:

US 9276400 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 01, 2016

Filed:

Dec. 11, 2012
Applicant:

Panasonic Corporation, Osaka, JP;

Inventor:

Masaki Kanemaru, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/00 (2006.01); H02H 9/04 (2006.01); H01L 27/02 (2006.01);
U.S. Cl.
CPC ...
H02H 9/041 (2013.01); H01L 27/0288 (2013.01);
Abstract

A protection circuit includes a transformer (), wherein a terminal () of the transformer () is connected to a terminal part () of a radio IC, a terminal () thereof is connected to a grounding point, a terminal () thereof is connected to an input or output of an on-chip circuit (), and a terminal () thereof is connected to a bias power supply circuit (). A signal is transmitted between a terminal-side inductor () and a circuit-side inductor () due to magnetic coupling therebetween. The terminal-side inductor and the circuit-side inductor are insulated to each other from a standpoint of DC and hence isolated completely to each other. Thus, different voltages can be applied to the terminal part () and the input or output of the on-chip circuit (), respectively.


Find Patent Forward Citations

Kanemaru, Masaki. (2016). Protection circuit (U.S. Patent No. 9276400). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9276400

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