| 摘要 |
PURPOSE:To improve oscillation by providing uniformly a microwave absorber in the height direction of a waveguide in a breaking region. CONSTITUTION:Solid oscillator 2 is fitted to metal post 3 inside waveguide 1 in a breaking region, and dielectric resonator 4 is so arranged that it will couple with metal post 3 electromagnetically; and then, radio-wave absorber 7 is provided to the entire opening surface of waveguide 5 in a breaking region in parallel to and closely to metal post 3, and metal plate 6 is provided in contact with radio-wave absorber 7. Providing radio-wave absorber 7 in parallel and closely to metal post 3 becomes equivalent to giving a loss to metal post 3, and this radio-wave absorber 7 suppresses the mode jump in a region where a bias voltage is low. |
