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:
Sep. 15, 1981
Filed:
May. 29, 1979
Applicant:
Inventor:
Harry T Wang, Thousand Oaks, CA (US);
Assignee:
Hughes Aircraft Company, Culver City, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
331-3 ; 331 14 ;
Abstract
In the free induction technique of this invention, the maser is externally stimulated to allow significant reduction of the size of the maser, and the stimulation is turned off and allowed to decay so that the maser output is free from the external stimulation before the signal is sensed to provide a clock frequency standard. As a result, the invention solves significant problems which otherwise have limited the accuracy of prior art atomic clocks, including the problem of frequency pulling due to amplitude drift in the stimulation signal.