To further reduce an insertion loss especially at a high-frequency region 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 the 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. Furthermore, the master signal winding A2 only passes through the through hole 34 without rotating once and passes through the shortest route to a substrate on which the branching transformer 31 for high-frequency signals is mounted, while winding the master ground winding B2 at a substrate side as compared with an intermediate position with respect to the circumferential direction of an outer periphery surface at the master winding section.
KOMATSU MIKIO
MAEDA MITSURU
| JPS61295611A | 1986-12-26 | |||
| JPH0917652A | 1997-01-17 | |||
| JPH1126251A | 1999-01-29 | |||
| JPH0470714U | 1992-06-23 | |||
| JPH05315140A | 1993-11-26 | |||
| JP2000340458A | 2000-12-08 | |||
| JP2001143777A | 2001-05-25 |
Kyuichi Ueki
Takao Ito