| 摘要 |
PROBLEM TO BE SOLVED: To provide a band-pass filter capable of having better attenuation characteristics through the same number of stages of resonators. SOLUTION: The band-pass filter includes an input terminal 11, a first band-pass filter 12 connected to the input terminal 11 and constituted by connecting a plurality of resonators 17 in parallel, a low-pass filter 13 connected to the first band-pass filter 12, a second band-pass filter 14 connected to the low-pass filter 13 and constituted by connecting a plurality of resonators 17 in parallel, and an output terminal 15 connected to the second band-pass filter 14. COPYRIGHT: (C)2008,JPO&INPIT
|
