US 12,463,602 B2
High-frequency module and communication device
Teruaki Oshita, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Oct. 7, 2022, as Appl. No. 17/938,769.
Application 17/938,769 is a continuation of application No. PCT/JP2021/015749, filed on Apr. 16, 2021.
Claims priority of application No. 2020-092377 (JP), filed on May 27, 2020.
Prior Publication US 2023/0035978 A1, Feb. 2, 2023
Int. Cl. H03F 3/195 (2006.01); H03F 1/56 (2006.01)
CPC H03F 3/195 (2013.01) [H03F 1/56 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A high-frequency module comprising:
a mounting substrate having a first main surface and a second main surface facing each other;
at least one amplifier disposed on one main surface of the first main surface and the second main surface of the mounting substrate, the amplifier having an input terminal and an output terminal; and
a matching circuit connected to a connection terminal being one of the input terminal and the output terminal of the amplifier,
wherein the mounting substrate includes a ground layer,
wherein the matching circuit includes:
a main line comprised of a first conductor pattern intersecting a thickness direction of the mounting substrate and connected to the connection terminal of the amplifier;
a sub-line comprised of a second conductor pattern intersecting the thickness direction, connected between the main line and the ground layer, and opposed to the main line in the thickness direction; and
an IC chip disposed on the mounting substrate and including an adjustment unit configured to adjust impedance conversion characteristics of the matching circuit,
wherein the main line has a first end connected to the connection terminal of the amplifier and a second end connected to the sub-line, and
wherein the adjustment unit includes:
a first switch connected between the first end of the main line and the connection terminal; and
one second switch connected between the connection terminal and a portion separated from both the first end and the second end in the main line.