Balun transformer, mounting structure of balun transformer,...

Details Balun transformer, mounting structure of balun transformer,... Balun transformer, mounting structure of balun transformer,...

2008-02-14

2010-02-02

Enad, Elvin G (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

C336S223000, C336S232000, C336S147000, C336S186000

Reexamination Certificate

active

07656262

ABSTRACT:
There is provided a balun transformer, in which first to fourth layer coils are stacked and coupled magnetically; one end of each coil of the first to fourth layer coils is grounded; the second and third layer coils are connected in parallel, an unbalanced signal is input/output to/from a common terminal of the second and third layer coils; a first balanced signal is input/output to/from the other end of the first layer coil; and a second balanced signal is input/output to/from the other end of the fourth layer coil.

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A Japanese Office Action dated Jan. 29, 2009 issued in connection with counterpart Japanese Patent Application No. 2007-034865.

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