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:
Oct. 14, 2008
Filed:
Jul. 05, 2006
Takeo Suzuki, Fukushima-ken, JP;
Shigeru Osada, Fukushima-ken, JP;
Takeo Suzuki, Fukushima-ken, JP;
Shigeru Osada, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A tuning circuit comprises, at least, a first circuit Kwhich serially connects a first variable capacitor elementand a second variable capacitor element, an inductance elementwhich is parallely connected to the first circuit Kand constitutes a resonance circuit with the first circuit K; a second circuit Kwhich includes a switch elementand a third resistorserially connected to each other and is parallely connected to the first circuit K; and a first resistorand a second resistor andwhich are connected to both ends of the first variable capacitor element, respectively and apply a predetermined tuning voltage.