Balanced filter device
AssigneeTaiyo Yuden Co., Ltd.
InventorsHisahiro Yasuda, Takeshi Kosaka, Makoto Inoue
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Abstract
A balanced filter suitable for a reduction of the filter size. The balanced filter comprises strip-line resonators (SL1a, SL1b) constituting resonance electrodes on the unbalanced side, strip-line resonators (SL2a, SL2b) disposed in adjacently opposed relation to the strip-lines on the unbalanced side and constituting resonance electrodes on the balanced side, strip-line resonators (SL3a, SL3b) disposed in adjacently opposed relation to the strip-lines on the balanced side and constituting stage constituting resonance electrodes, and impedance elements (Z) coupling the resonance electrodes on the balanced side to the stage constituting resonance electrodes.
Claims11
A balanced filter device comprising:
- an unbalanced-side resonance electrode coupled to an unbalanced terminal;
- a balanced-side resonance electrode coupled to a balanced terminal;
- and
- a stage constituting resonance electrode coupled to the balanced terminal,
- wherein the unbalanced-side resonance electrode, the balanced-side resonance electrode, and the stage constituting resonance electrode are formed on respective dielectric layers in laminated arrangement, wherein the balanced-side resonance electrode is located between the unbalanced-side resonance electrode and the stage constituting resonance electrode.
Dependencies are inferred from the claim text.