Duplexer having matching circuit

摘要

A duplexer (50) includes a first filter (10) connected to a common terminal, a second filter (20) connected to the common terminal (Ant), an additional inductor (L10,L20) connected between at least one of the first and second filters and ground, a matching-use inductor (L30) connected between the common terminal and the ground, and a capacitor (C2) connected between the common terminal and at least one of the first and second filters.