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:
Feb. 07, 2006
Filed:
Aug. 15, 2002
Tomio Satoh, Kouza-gun, JP;
Tomio Satoh, Kouza-gun, JP;
Toyo Communication Equipment Co., Ltd., Kanagawa, JP;
Abstract
The present invention has for its object to provide a piezoelectric oscillator that has improved secular variation characteristics and excels in suppressing undesired resonance. The piezoelectric oscillator has a piezoelectric vibrator and an oscillation transistor, and since a collector load resistance, a capacitance, a parallel circuit of a resistance and a capacitance, and said piezoelectric vibrator are connected between the collector of the transistor and an AC-wise grounded power supply, between the emitter and collector of the transistor, between the emitter of the transistor and the ground, and between the base of the transistor and the ground, respectively, it is possible to sharply reduce a current flow through the crystal vibrator, permitting suppression of frequency variations by the secular change characteristics of the oscillator; furthermore, the reduction of the current flow through the piezoelectric vibrator improves C/N and prevents undesired vibration and oscillation as well as decreases secular changes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile