| 摘要 |
For a BEF type dielectric filter, a plurality of one-stage band-elimination filters (BEFs) each composed of two resonant lines (1,2/3,4) inter-digitally pair-coupled to each other, are provided within one dielectric block (10) and phase-shifting-coupled to each other at an electrical angle of pi /2 in an inter-digital or comb-line manner. In addition, an input or output resonant line (5) is provided which is phase-shifting-coupled to an input or output resonant line of the BEF type dielectric filter at an electrical angle of pi /2 in an inter-digital or comb-line manner. <IMAGE> |
