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:
Jun. 30, 1992
Filed:
Jul. 11, 1991
Applicant:
Inventors:
Gary K Montress, Westford, MA (US);
Mark E Russell, Londonderry, NH (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ; H03L / ; H03L / ;
U.S. Cl.
CPC ...
331 18 ; 331 17 ; 331 25 ; 331 / ; 3311 / ;
Abstract
A SAW stabilized oscillator includes a phase locking circuit which is phase locked to a lower frequency reference signal having an odd order difference with respect to the fundamental frequency of the SAW oscillator. A mixer is disposed in the phase locking circuitry and is used as a sub-harmonic phase detector by mixing the fundamental with an odd harmonic of the reference signal.