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:
Dec. 04, 2012
Filed:
May. 06, 2010
Shoichi Ohi, Tokyo, JP;
Naoto Ohyama, Tokyo, JP;
Shoichi Ohi, Tokyo, JP;
Naoto Ohyama, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A composite balun includes a plurality of baluns, at least one capacitor, a ground terminal, and a DC voltage supply terminal. The plurality of baluns and the capacitor are built into a single chip. Each of the baluns includes first to fourth connection lines, a first balanced terminal, a second balanced terminal, and an unbalanced terminal. The first connection line is connected at one end to the unbalanced terminal. The second connection line is connected at one end to the other end of the first connection line. The third connection line is electromagnetically coupled to the first connection line and connected at one end to the first balanced terminal and at the other end to the DC voltage supply terminal. The fourth connection line is electromagnetically coupled to the second connection line and connected at one end to the second balanced terminal and at the other end to the DC voltage supply terminal. The capacitor is connected at one end to the DC voltage supply terminal and led at the other end to said ground terminal.