FILTER DEVICE
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United States of America Patent
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Issued Date -
Oct 17, 2024
app pub date -
Jun 27, 2024
filing date -
Jun 27, 2024
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Abstract
A filter device includes a dielectric, first and second electrodes in the dielectric and connected to a ground terminal, and first to third resonators. The first and second resonators are between the first and second electrodes. The first resonator is connected to an input terminal, and the second resonator is connected to an output terminal. The third resonator is between the first and second resonators. The first resonator includes a first plate conductor connected to the input terminal and the ground terminal. The second resonator includes a second plate conductor connected to the output terminal and the ground terminal. The first and second plate conductors extend in the dielectric in an X-axis direction. The first to third resonators are arranged in a Y-axis direction. The third resonator includes a capacitor electrode opposite to the second electrode, and an inductor via connected to the capacitor electrode and the first electrode.
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