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:
Mar. 18, 2014
Filed:
Sep. 06, 2012
Applicant:
Masataka Nomura, Minowa-Machi, JP;
Inventor:
Masataka Nomura, Minowa-Machi, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/06 (2006.01); H03B 5/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
An oscillator circuit includes a resonator (SAW resonator), an amplifier circuit, and a switching element (NMOS switch). The amplifier circuit has a feedback path from one end to the other end of the resonator, a first inductance element (elongated coil) provided in the feedback path, and a variable capacitance element (variable capacitance diode) provided in the feedback path in series with the first inductance element. The switching element is provided in parallel to a circuit part including the first inductance element and the variable capacitance element.