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. 18, 2010
Filed:
May. 10, 2007
Ty R. Mcnutt, Columbia, MD (US);
John V. Reichl, Ellicott City, MD (US);
Harold C. Heame, Iii, Baltimore, MD (US);
Eric J. Stewart, Silver Spring, MD (US);
Stephen D. Van Campen, Clarksville, MD (US);
Victor D. Veliadis, Hanover, MD (US);
Ty R. McNutt, Columbia, MD (US);
John V. Reichl, Ellicott City, MD (US);
Harold C. Heame, III, Baltimore, MD (US);
Eric J. Stewart, Silver Spring, MD (US);
Stephen D. Van Campen, Clarksville, MD (US);
Victor D. Veliadis, Hanover, MD (US);
Northrop Grumman Systems Corporation, Los Angeles, CA (US);
Abstract
A normally-off cascode power switch circuit is disclosed fabricated in wide bandgap semiconductor material such as silicon carbide or gallium nitride and which is capable of conducting current in the forward and reverse direction under the influence of a positive gate bias. The switch includes cascoded junction field effect transistors (JFETs) that enable increased gain, and hence blocking voltage, while minimizing specific on-resistance.