| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated band-pass filter which has excellent attenuation characteristic and where miniaturization/height reduction are possible in a laminated high frequency band-pass filter consisting of a strip line resonator. SOLUTION: Three one-side short-circuiting strip resonator electrodes 23a, 23b and 23c are arranged in parallel on the same sheet, and the short-circuiting side of the resonator electrodes are alternately in different directions. On sides opposite to the short-circuiting sides of the three strip resonator electrodes arranged in parallel, wavelength shortened electrodes 22a, 22b and 22c are arranged at positions respectively corresponding to the resonator electrodes on a sheet of another layer. A skip capacity electrode 28 is arranged on a sheet of a layer other than that of the three resonator electrodes arranged in parallel, and the resonator electrodes on an input/output side of the resonator electrodes are capacity-coupled with each other by the skip capacity electrode. COPYRIGHT: (C)2006,JPO&NCIPI
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