Elastic wave splitter having a resonant circuit between an antenna terminal and ground
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United States of America Patent
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Oct 4, 2016
Grant Date -
Aug 7, 2014
app pub date -
Apr 7, 2014
filing date -
Oct 24, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An elastic wave splitter includes an antenna terminal, a transmission terminal and reception terminals. A transmission filter is connected between the antenna terminal and the transmission terminal. A reception filter is connected between the antenna terminal and the reception terminals. The transmission filter and the reception filter are each defined by an elastic wave filter. A resonant circuit is connected between the antenna terminal and a ground potential. The resonant circuit includes a surface acoustic wave resonator and a capacitor connected in series with the surface acoustic wave resonator. A resonant frequency of the resonant circuit is positioned in a frequency band of an interference wave that causes intermodulation distortion to be generated.
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