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. 17, 2018
Filed:
Feb. 07, 2014
Dexerials Corporation, Shinagawa-ku, Tokyo, JP;
Masayoshi Kanno, Utsunomiya, JP;
Dexerials Corporation, Shinagawa-ku, Tokyo, JP;
Abstract
Provides is a variable capacitance circuit that is capable of efficiency optimizing antenna transmission effectively by regulating capacitance values of variable capacitance capacitors with use of direct current voltages applied to the variable capacitance capacitors. A variable capacitance circuit () includes a series variable capacitance element () and a parallel variable capacitance element () connected in series with the series variable capacitance element (). The series variable capacitance element () includes two variable capacitance capacitors (CS, CS) () connected in series. The parallel variable capacitance element () includes two variable capacitance capacitors (CP, CP) () connected in series and a variable capacitance capacitor (CP)() connected in parallel with the variable capacitance capacitors (CP, CP) (). The variable capacitance circuit () further includes three direct current terminals ().