Laminated balun transformer

Details Laminated balun transformer Laminated balun transformer

2008-11-25

2009-08-25

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

C333S238000

Reexamination Certificate

active

07579923

ABSTRACT:
A laminated balun transformer that may be used for lines having various impedances includes a first magnetic substrate, a laminated body, a second magnetic substrate, and external electrodes. The laminated body includes a first transformer, a second transformer, and an insulator that covers the first and second transformers. The first transformer includes a primary coil and a secondary coil. The second transformer includes a primary coil and a secondary coil. The line width of the primary coil of the first transformer is set so as to decrease from the side of the internal electrode towards the side of the internal electrode. The line width of the secondary coil of the second transformer is also set so as to decrease from the side of the internal electrode towards the side of the internal electrode.

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Official Communication issued in International Patent Application No. PCT/JP2007/058523, mailed on Jul. 31, 2007.

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