Filter and multiplexer
Number of patents in Portfolio can not be more than 2000
United States of America
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-
May 10, 2022
Grant Date -
Dec 31, 2020
app pub date -
Jun 11, 2020
filing date -
Jun 11, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filter includes a transmission filter circuit and an additional circuit that is electrically connected in parallel with at least a portion of the transmission filter circuit. The additional circuit includes a resonator group including a plurality of interdigital transducer electrodes provided adjacent to or in a vicinity of each other in an acoustic wave propagation direction, a first capacitive element electrically connected between the resonator group and one end of the additional circuit, and a second capacitive element connected between a ground and a signal path electrically connecting the resonator group and the first capacitive element. A capacitance of the second capacitive element is greater than about 0 pF and less than or substantially equal to about 2.0 pF.
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