Patent ID: 9065506
Filing Date: 2015-06-23
Classification: H04B

Abstract:
1. A high-frequency switch module comprising: a switch device that switches between a first individual port that is connected to a transmission signal input terminal of the high-frequency switch module and a second individual port that is connected to a reception output terminal of the high-frequency switch module so that either the first individual port or the second individual port is connected to a common port that is connected to an antenna connection terminal of the high-frequency switch module; and a filter circuit that includes an inductor and a capacitor, that is connected in series between the transmission signal input terminal and the first individual port, and that attenuates a harmonic signal of a transmission signal; wherein the inductor is defined by a coil; in the filter circuit, at least one of an inductance of the inductor and a capacitance of the capacitor is set such that a phase of a distortion harmonic signal which is generated due to distortion in the switch device and which is transmitted from the switch module to a side of the filter circuit at which the switch device is positioned is different by 180° from a phase of the harmonic signal of the transmission signal at an end of the filter circuit nearer to the transmission signal input terminal, and the distortion harmonic signal and the harmonic signal of the transmission signal cancel each other.