| 摘要 |
PURPOSE:To offer a dielectric filter with mass-production having a low loss coupling part by inserting a socket member to a cavity at the inside of a dielectric resonator and fixing a coupling base by a rivet member while keeping it to a prescribed height. CONSTITUTION:In inserting rivets 8d-8f to the hollow part of resonators 1a- 1c, they are inserted to it via socket shape metallic members 12a-12c respectively. The coupling base 7 is kept to a prescribed height by using the sockets 12a-12c regardless of the length of each dielectric resonator. Moreover, a gap is formed between the coupling base 7 and the open end of the dielectric resonators 1a-1c, the deterioration of the Q is prevented to constitute a coupling conductor on the upper/lower face of the coupling base 7 thereby increasing easily the coupling capacitance. |
