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:
Jan. 09, 2001
Filed:
Jan. 21, 1998
Applicant:
Inventor:
Philippe Sirito-Olivier, Saint Egreve, FR;
Assignee:
SGS-Thomson Microelectronics S.A., Gentilly, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03C 3/10 ;
U.S. Cl.
CPC ...
H03C 3/10 ;
Abstract
The present invention relates to a voltage-controlled quartz crystal oscillator, including an oscillation transistor, the base of which is connected to a first terminal of a quartz crystal and the emitter of which is connected, via a first capacitor, to a second terminal of the quartz crystal connected to a first supply terminal, and including an active circuit introducing a variable capacitance between the base and the emitter of the oscillation transistor, the active circuit being voltage-controlled.