HIGH-FREQUENCY MODULE

摘要

A high-frequency module includes a connection line that interconnects a first SAW resonator and a second SAW resonator, and is connected to a second shunt connection terminal through a third SAW resonator. A connection line interconnecting a fourth SAW resonator and a second series connection terminal is connected to the second shunt connection terminal through a fifth SAW resonator. The second shunt connection terminal is connected to a ground through an inductor. A matching circuit is connected between a first series connection terminal and a first external connection terminal. The matching circuit is inductively or capacitively coupled to the inductor.

主权项

1. A high-frequency module comprising:
a first external connection terminal; a second external connection terminal; a filter unit connected between the first external connection terminal and the second external connection terminal; a matching circuit connected between at least one of the first external connection terminal and the second external connection terminal and the filter unit; and an inductor connected between a ground and the filter unit; wherein the filter unit includes:
a first series connection terminal connected to the first external connection terminal;a second series connection terminal connected to the second external connection terminal;a shunt connection terminal connected to the ground through the inductor;a plurality of series-connected filter elements connected in series between the first series connection terminal and the second series connection terminal through a plurality of connection lines;a first shunt-connected filter element including one end connected to a first connection line of the plurality of connection lines, and an opposite end connected to the shunt connection terminal; anda second shunt-connected filter element including one end connected to a second connection line of the plurality of connection lines, and an opposite end connected to the shunt connection terminal to which the first shunt-connected filter element is connected; wherein the inductor and the matching circuit are inductively or capacitively coupled to each other.