| 摘要 |
PROBLEM TO BE SOLVED: To provide a means capable of keeping a uniform parallelopiped shape even when the central frequencies of respective filtering parts are considerably different concerning a dielectric filter equipped with plural filtering parts like a dielectric resonator or the like and production thereof. SOLUTION: Concerning the dielectric filter equipped with plural filtering parts F1 and F2 , since the respective filtering parts are formed from the dielectric materials of respective different dielectric constants, the desired ratio of a central frequency can be selected by selecting the dielectric constant of any dielectric material, and different central frequencies can be provided even when the length of a through hole 5 is made equal. Therefore, a dielectric porcelain block 2 can be shaped into uniform parallelopiped, and the outer conductor or pad formed on its outer peripheral surface can be formed by any mass production facilitated means such as screen printing. |
