Single-pole double-throw switch
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United States of America Patent
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Feb 15, 2022
Grant Date -
May 28, 2020
app pub date -
Nov 22, 2019
filing date -
Nov 27, 2018
priority date (Note) -
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Abstract
A single-pole double-throw switch includes switching units which are set between a first port and a second port and between the first port and a third port, respectively, and are configured to perform complementarily. The each switching unit includes an antenna port, a circuit port, a transmission line configured to couple them, and a switching element connected between the transmission line and a ground. The switching element includes a parallel circuit including a transistor and an inductor connected in parallel, and a capacitor connected in series with the parallel circuit. The transmission line has a characteristic impedance different from a impedance seen inside the switching unit from the antenna port and a impedance seen inside the switching unit from the circuit port.
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