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. 14, 1996
Filed:
Jan. 09, 1995
Gregory R Dietz, Schaumburg, IL (US);
Sanjay Moghe, Hoffman Estates, IL (US);
Richard R Becker, Elmhurst, IL (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A frequency stable oscillating device includes an oscillating transistor. A heating element is disposed in close proximity to the oscillating transistor. A temperature sensor is mounted in close proximity to the oscillating transistor. A temperature control device supplies a variable signal which is dependant upon a local temperature of the oscillating transistor, wherein the variable signal controls the operation of the heating element. The heating element may alternately consist of one or more resistive patches, or one or more heating transistors which are biased to provide sufficient heating. The oscillating device may be formed from either IC or MMIC technologies, and may be formed from either silicon or GaAs.