| 摘要 |
Disclosed is a high frequency switch wherein a first switch circuit is connected in series to a first λ/4 signal transmission path connected between an antenna connecting terminal and a transmission terminal. In the first switch circuit, a first λ/4 transmission path and a first parallel resonant circuit, which includes one first PIN diode, are connected in series. In a first inductor of the first parallel resonant circuit, a constant is set so that a resonance frequency of the first parallel resonant circuit and the center frequency of a first antenna switch are the same when the first PIN diode is turned off.
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