| 摘要 |
PROBLEM TO BE SOLVED: To improve difficulty in the formation of a thick coupling pattern at the formation of a coupling pattern on an opened face by a printing method or the like for connecting two resonators in a dielectric filter and to suppress the direct influence of various dispersion generated in a printing process on characteristic dispersion. SOLUTION: In the case of molding a dielectric block molding 1 provided with plural resonator through holes 2, 2 in its longitudinal direction, coupling pattern forming recessed parts 3, 3 are formed on the upper surface of the molding 1 by pressing the surface by a pestle. After burning the molding 1, the whole surface of the burnt article 4 is coated with a metallized layer 5, only the metallized layer 5 formed on the upper face is cut off to expose catalyzed faces filled in the recessed part 3, 3 to form coupling patterns 6. |
