| 摘要 |
PURPOSE: A dielectric filter is provided to adjust an AP(Attenuation Pole) band in a low frequency band. CONSTITUTION: A dielectric filter includes a dielectric body for separating electric polarization by an electric field, and a conductor coating plated on the surface of the dielectric body. The dielectric filter comprises: 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 part 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 in the middle.
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