| 摘要 |
PURPOSE:To realize a comb line type band-pass filter in ten-odd GHx bands, whose realization has been considered to be impossible in respect of its accuracy, by forming as one body from the beginning a frame body and each resonance electric conductor, which have been formed separately and aessembled by means of brazing, etc. up to the present. CONSTITUTION:Each resonance rod 7 is formed by scooping out and penetrating one plate as a part of a frame body 1. 2 is a fine adjusting screw which is attached to the frame body 1 in accordance with each resonance rod 7, adjusts an interval to the tip part of each resonance rod 7 and adjusts finely a resonance frequency, and 3 and 4 are input and output coaxial connectors, and a necessary coupling to the resonance rod 7 is obtained by working suitably tip parts 3a, 4a of the center electric conductor. Also, 5 and 6 are upper and lower covers, and fixed to the frame body 1 with a suitable screw. That is to say, as for the frame body 1, it can be constituted by scooping out and penetraging the resonance rod 7 part, and thereafter, only providing a tap hole 2a for attaching the screw 2, holes 3b, 4b for attaching the connectors 3, 4 on the side face, and providing a hole la for attaching the covers 5, 6, and also, as for the upper and lower covers 5, 6, a plate provided with holes 5a, 6a for attaching the covers is used. |
