| 摘要 |
PURPOSE: A dielectric is provided to improve a harmonic character by molding a resonance groove in a conic shape. CONSTITUTION: A dielectric filter comprises: a conductor coating plated on the surface of a dielectric body, separating electric polarization by an electric field; a first resonator for composing a first upper part resonance groove pierced beyond the center from the upper part of the dielectric body, and a first bottom part resonance groove pierced beyond the center from the bottom part of the dielectric body, and for having a first adjuster of coupling capacity in the middle; a second resonator for composing a second upper resonance groove pierced beyond the center from the upper part of the dielectric body, by being separated horizontally from the first resonator, and a second bottom part resonance groove pierced beyond the center from the bottom part of the dielectric body, and for having a second adjuster of coupling capacity. The first upper part resonance groove and the second upper part resonance groove are molded in conic shapes, which diameters are diminishing to the center from the upper part of the dielectric body. The first bottom part resonance groove and the second resonance groove are molded in conic shapes, which diameters are diminishing to the center from the upper part of the dielectric body.
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