Patent ID: 7561005

Claim:
A high frequency front-end module that processes first and second high frequency transmission and reception signals having different frequency bands, a frequency band of the first high frequency transmission and reception signals being lower than a frequency band of the second high frequency transmission and reception signals, the high frequency front-end module comprising: a diplexer arranged to branch a first signal path between an antenna terminal and a processor for the first high frequency transmission and reception signals and a second signal path between the antenna terminal and a processor for the second high frequency transmission and reception signals; a first high frequency switch disposed in the first signal path and arranged to switch a reception signal path for a first high frequency reception signal of the first high frequency transmission and reception signals and a transmission signal path for a first high frequency transmission signal of the first high frequency transmission and reception signals; an acoustic wave filter disposed in the reception signal path of the first signal path and downstream of the first high frequency switch and having a pass band that allows the first high frequency reception signal to pass therethrough; and a phase-matching element having an anti-surge function disposed between the acoustic wave filter and the first high frequency switch and having a function of matching a phase between the acoustic wave filter and the first high frequency switch and a function of removing a surge; wherein the diplexer, the first high frequency switch, the acoustic wave filter, and the phase-matching element having an anti-surge function are integrated in a laminated structure in which a plurality of dielectric layers are laminated; an LC filter defined by a capacitor and an inductor is disposed in the transmission signal path of the first signal path; and at least one of the capacitor and the inductor defining the LC filter is included in the laminated structure, and the capacitor and the inductor are disposed so as not to overlap the phase-matching element having an anti-surge function in plan view along a laminating direction of the laminated structure.