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.

Date of Patent:
Jan. 31, 2012

Filed:

Dec. 04, 2009
Applicants:

Do-hwan OH, Seoul, KR;

Kyo-jin Choo, Seoul, KR;

Deog-kyoon Jeong, Seoul, KR;

Inventors:

Do-hwan Oh, Seoul, KR;

Kyo-Jin Choo, Seoul, KR;

Deog-Kyoon Jeong, Seoul, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/02 (2006.01); H03B 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

An adjustable capacitor is provided including a capacitor unit including a plurality of capacitor groups aligned in a matrix format and a switch unit to adjust capacitance by connecting the plurality of capacitor groups in parallel according to a selection signal of a column and row of the matrix. Accordingly, the adjustable capacitor may be realized of a small size but with a high capacitance change rate.


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