| 摘要 |
PROBLEM TO BE SOLVED: To provide a transformer coupler with a small size having a low insertion loss over a board frequency band. SOLUTION: A main wire 12 and a sub wire 13 are formed by a copper wire whose diameter is 0.1mm insulated by an insulation material such as polyurethane, after the wires are twisted and both ends of both wires are connected to connection terminals 11a-11b formed on an insulator rectangular board 11 whose dimension is 2.0mm×0.25mm×0.1mm to configure the transformer coupler 10. Thus, the main wire 12 and the sub wire 13 form respectively inductors, and the wires 12, 13 are twisted closely and an insulation material is inserted between both wire conductors, then the main wire 12 and the sub wire 13 causes inductive coupling and capacitive coupling. Thus, the well-known capacitive/ inductive coupling transformer coupler is composed and a signal propagated through the main wire 12 is outputted to the sub wire 13.
|
