| 摘要 |
PROBLEM TO BE SOLVED: To provide a band pass filter, in a turnaround structure, capable of obtaining a sharp out-of-band attenuation characteristic in the vicinity of a passband by making an attenuation pole closer to the passband while improving an intra-band group delay time deviation characteristic. SOLUTION: The band pass filter includes a skip coupling window 16 and a coupling probe 15A. The skip coupling window 16 is formed on the shield wall between neighboring cavities so as to couple neighboring dielectric resonators 3, 6 with each other by skipping a series of coupling between an input terminal 17 and an output terminal 18. The coupling probe 15A is provided via the skip coupling window and comprised of a lead wire. COPYRIGHT: (C)2011,JPO&INPIT |
