DIRECTIONAL COUPLER WITH FUNCTION OF CONTROLLING DEGREE OF COUPLING

摘要

PROBLEM TO BE SOLVED: To provide a directional coupler of which the degree of coupling is easily controlled over and over again. SOLUTION: A main line 32 extended on a first axis 31 and a subordinate line 34 extended on a second axis 33 are supported by a supporting member 30. The subordinate line is provided with a conductive eccentric member 44 located practically parallel to the main line with interval of isolation distance. The subordinate line can be turned around with respect to the second axis. The eccentric member 44 is equipped with a peripheral surface to change the isolation distance corresponding to the turn of the subordinate line.