| 摘要 |
PURPOSE: A ceramic filter is provided to obtain an optimum filtering characteristics by providing an input terminal and an output terminal on both sides of a middle outer corner between the upper surface of a ceramic body section from which a conductive coating is removed from the position of half of the length of a resonance hole. CONSTITUTION: A ceramic filter(100) comprises a ceramic body section(110) which includes a plurality of resonance holes(111) and induces the electrical polarization by the electric field, a conductive body coating(120) coated on the surface of the ceramic body section(110), an input terminal(130), and an output terminal(140). The input terminal(130) and the output terminal(140) is provided on both sides of a middle outer corner between the upper surface of the ceramic body section(110) from which the conductive coating is removed from the position of half of the length of the resonance holes(111).
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