High frequency signal directional coupling line

摘要

A high frequency signal line facilitates the adjustment of the strength of branched output or inductively coupled leakage field depending on the particular requirement of operation. In the preferred embodiment, a transmission line consists of a central conductor and a cylindrical outer conductor formed with a longitudinally extending opening, the transmission line being covered with a cylindrical shielding shutter formed with a longitudinally extending opening. The high frequency signal line also includes an induction line including a trough-shaped shielding cover formed with a longitudinally extending opening and which is adapted to be detachably attached to the shielding shutter. The induction line also includes a directional coupling conductor for high frequency coupling which extends within the shielding cover generally parallel to the central conductor.