To further reduce an insertion loss over a wide band in a branching transformer for high-frequency signals preferably used for a signal transmission outlet of one branch that can be used in the transmission of a signal to a high-frequency region, such as an intermediate frequency signal of satellite television broadcast.
The branching transformer 31 for high-frequency signals is constituted such that: master and branching winding sections are provided by forming two through holes 34, 35 in a ferrite core 32; a master signal winding A2 is inserted into the through hole 34 at the master winding section and a master ground winding B2 is wound; and a branching signal winding D2 and a branching ground winding C2 are wound in the through hole 35 at the branching winding section. In this case, the winding B2 is inserted into the through hole 34 for turning several times, the winding A2 is inserted, both lead ends of the winding A2 are soldered to lead terminals P23, P26 of a substrate 33, the remaining turn of the winding B2 is wound, and the winding A2 is sandwiched between both the lead ends of the winding B2.
KOMATSU MIKIO
MAEDA MITSURU
Kyuichi Ueki
Takao Ito
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