| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer bandpass filter which can broaden the band width of -3 dB, when the pass band is set in the vicinity of 400-800 MHz. SOLUTION: The bandpass filter has a plurality of first parallel resonance circuits, in which a coil and a capacitor are connected in parallel with a serial arm and a second parallel resonance circuit, in which a coil and a capacitor are connected in parallel with a parallel arm in a laminate, in which an insulator layer and a conductor pattern are laminated. The input side of the band-pass filter is connected to an input terminal via a first capacitor. The output side of the band-pass filter is connected to an output terminal via a second capacitor. COPYRIGHT: (C)2005,JPO&NCIPI
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