Radio frequency circuit, multiplexer, radio frequency front end circuit and communication apparatus
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United States of America Patent
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Jul 5, 2022
Grant Date -
Aug 6, 2020
app pub date -
Apr 22, 2020
filing date -
Oct 24, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A radio frequency circuit includes a multilayer substrate, series arm circuits in a first path connecting the input/output terminals (T1 and T2) on the multilayer substrate, a parallel arm circuit in a second path connecting a node on the first path and a ground, a wiring A on the multilayer substrate connected to the input/output terminal (T1) as a part of the first path, a wiring B on the multilayer substrate connected to the input/output terminal (T2) as a part of the first path, and a wiring C on the multilayer substrate as a part of the second path. The parallel arm circuit includes an impedance variable circuit, the wiring A and the wiring B in a layer different from the multilayer substrate. When viewed in a plan view, the wiring C does not overlap with the wiring A and the wiring B.
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