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. 24, 2002
Filed:
Dec. 29, 2000
Applicant:
Inventor:
Marlin Luff, Wheaton, IL (US);
Assignee:
CTS Corporation, Elkhart, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/04 ; H03B 5/36 ; H01L 4/1053 ; H05K 7/02 ;
U.S. Cl.
CPC ...
H03B 5/04 ; H03B 5/36 ; H01L 4/1053 ; H05K 7/02 ;
Abstract
A dual-cavity temperature compensated crystal oscillator ( ) provides a three-layer ceramic package ( ), with a crystal ( ) sealed in a well or cavity ( ). Oscillator components ( ) such as a compensation circuit and an oscillator are attached through screened solder onto the back side of the ceramic package ( ) and are encapsulated within potting compound or encapsulant. Electrical connection is provided between the oscillator and compensation circuitry and the piezoelectric element ( ) to produce a frequency-controlled oscillator. After frequency tuning, a hermetic seal is provided between a cover ( ) and ledge ( ) to hermetically seal the cavity ( ).