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. 24, 1977
Filed:
Sep. 12, 1975
Applicant:
Inventors:
James C Fletcher, , US;
Charles Elachi, Pasadena, CA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03B / ;
U.S. Cl.
CPC ...
3311 / ; 330-55 ; 333 72 ;
Abstract
An acoustic surface wave oscillator is constructed from a semiconductor-piezoelectric acoustic surface wave amplifier by providing appropriate perturbations at the piezoelectric boundary. The perturbations cause Bragg order reflections that maintain acoustic-wave oscillation under certain conditions of gain and feedback.