Patent ID: 8466733

Claim:
A high-frequency switch module comprising: a switch IC including a common terminal connected to a single antenna and a plurality of high-frequency signal input/output terminals that are individually connected to a plurality of high-frequency communication circuits; a first inductor arranged to directly connect the common terminal of the switch IC to a ground; an impedance matching circuit disposed between the common terminal of the switch IC and the antenna and arranged to perform impedance matching between the switch IC and the antenna; and a multilayer circuit board in which the switch IC is included and a circuit element included in the impedance matching circuit includes an internal electrode or a mounted electronic circuit component; wherein the first inductor is disposed at one end portion of the impedance matching circuit on a side of the common terminal; one end portion of the first inductor on a side of the ground is connected to a ground electrode disposed on an inner layer or undersurface of the multilayer circuit board through only via holes formed in the multilayer circuit board; and the first inductor is arranged in the multilayer circuit board so as not to overlap any other inductors disposed in the multilayer circuit board when viewed in a plan view of the multilayer circuit board.