| 摘要 |
PURPOSE:To improve productivity and to reduce the dispersion of a characteristic, by connecting each of plural central conductors to a coaxial type dielectric oscillator electrically by inserting in a hole for inserting the central conductor formed almost in the center of the coaxial type dielectric oscillator respectively, and connecting a conductor frame to a shield case electrically by arranging the frame in the inside of the shield case. CONSTITUTION:Dielectrics 1-4, the parts other than the upper plane of which are wrapped with a metallic conductor, are fixed on a metallic frame 30. The above work is performed so that the central conductor can be inserted to a through hole formed with the inner peripheral parts 5a, 6a, 7a, and 8a of the metallic conductors 5, 6, 7, and 8. And the inner peripheral part of the metallic conductor and the central conductor, and a dielectric fixing plate and the outer peripheral part of the metallic conductor are fixed by soldering, respectively. The metallic frame on which the dielectric is fixed is housed in the shield case 22, and the fixing plates 38 and 39 and the side plate of the case 22 are fixed with a metallic screw 61. In such a way, it is possible to perform work to insert the plural central conductors to the hole of the inside of each resonator easily, and also, to reduce the dispersion of the inserting length of the central conductor to the hole of the inside of the metallic conductor.
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