| 摘要 |
PURPOSE:To make it possible to absorb an undersired wave by providing a subwaveguide into which an absorber has been inserted, on the outside of the main waveguide. CONSTITUTION:The circulator is constituted by installing a ferri-magnetic substance 20 to the junction part of the main waveguides 1, 2, 3 which have been connected in the form of Y. subwaveguides 11, 12, 13 having the cutoff characteristics in the working frequency band are provided between the respective main waveguides, and they are connected to the main waveguides through the connecting hole 40, respectively. An absorber 30 is disposed to the other end of the subwaveguides 11-13, respectively, and it absorbs an undesired frequency component such as a modulated wave, etc., which is caused in the circulator due to the nonlinear characteristics. |
