CONTACTLESS COUPLING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To obtain the contactless coupling circuit which is used for a phase shifter with less production of noise due to improper contact and intermodulation and changing phases continuously while offering excellent work performance at a low cost. SOLUTION: An input side strip line 3 and a circular-arc output side strip line 4 are formed on a dielectric board upper face and a turnable rotation coupling conductor 6 coupled with the lines 3, 4 via an insulator 5 couples both the strip lines 3, 4. In this case, a load impedance circuit 6d as aλ/4 transformer is formed to a part ofλg/4 at an output side end of the rotation coupling conductor 6.