DIELECTRIC FILTER AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To reduce the number of components of a dielectric filter by arranging plural coaxial resonators side by side whose connection section is flush with each other in a case one side of which is opened so as to configure the case of a single component. SOLUTION: This dielectric filter is formed with coaxial resonators 2-5 arranged side by side inside a case 1 so that its connecting section is flush with each other. Connection metallic fixtures 2a-5a for connection faces 2b-5b of the coaxial resonators 2-5 for the purpose are projecting to the left in figure and input and output terminals 8, 9 of the coaxial resonators 2-5 are connected by coupling board 6. The coupling board 6 is a board whose both sides have a conductive pattern to form an electric capacitance. Through such a constitution, since the case 1 is formed of a single component, resulting that the number of components is reduced.