| 摘要 |
A dielectric filter having a plurality of dielectric coaxial resonators and a multilayer substrate comprising a plurality of dielectrics layers and a plurality of electrically conductive patterns, wherein the dielectric coaxial resonators are positioned against a front surface of the multilayer substrate and are electrically connected in parallel through first capacitors formed by the electrically conductive patterns of the multilayer substrate, a series connection of a second capacitor, a strip line and a third capacitor or a series connection of a second capacitor, an inductance element and a third capacitor formed by the electrically conductive patterns of the multilayer substrate is electrically connected in parallel relative to the first capacitors. The filter is small and can be manufactured in a reduced number of man-hours.
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