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:
Apr. 14, 2009
Filed:
Nov. 08, 2006
Takahiro Nakamura, Kokubunji, JP;
Toru Masuda, Kokubunji, JP;
Tomomitsu Kitamura, Takasaki, JP;
Norio Hayashi, Tamamura, JP;
Hiroshi Mori, Takasaki, JP;
Takahiro Nakamura, Kokubunji, JP;
Toru Masuda, Kokubunji, JP;
Tomomitsu Kitamura, Takasaki, JP;
Norio Hayashi, Tamamura, JP;
Hiroshi Mori, Takasaki, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
An LC resonant circuit of an oscillator includes a parallel circuit of an inductor, a first fine adjustable capacitor and a first capacitor bank, and a series circuit of a second fine adjustable capacitor and a second capacitor bank. A frequency conversion gain of the oscillator is the sum of a frequency conversion gain of the oscillator based upon the first fine adjustable capacitor which decreases according to increase of a capacitance value of the capacitor bank and a frequency conversion gain based upon the second fine adjustable capacitor which increases according to increase of a capacitance value of the second capacitor bank. Accordingly, an LC resonant circuit for an oscillator with reduced fluctuation of a frequency conversion gain, and an oscillator and a data processing equipment using the same are provided.