US 11,705,875 B2
Power amplifier module
Shigeki Koya, Kyoto (JP); Yasunari Umemoto, Kyoto (JP); Yuichi Saito, Kyoto (JP); Isao Obu, Kyoto (JP); and Takayuki Tsutsui, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Nov. 8, 2021, as Appl. No. 17/453,962.
Application 17/453,962 is a continuation of application No. 16/527,578, filed on Jul. 31, 2019, granted, now 11,196,394.
Claims priority of application No. 2018-152115 (JP), filed on Aug. 10, 2018; and application No. 2019-081295 (JP), filed on Apr. 22, 2019.
Prior Publication US 2022/0060158 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 3/21 (2006.01); H03F 1/02 (2006.01); H01F 17/00 (2006.01); H01L 23/498 (2006.01); H01L 23/552 (2006.01); H01L 23/66 (2006.01); H01L 23/00 (2006.01); H03F 3/213 (2006.01)
CPC H03F 3/211 (2013.01) [H01F 17/0013 (2013.01); H01L 23/49822 (2013.01); H01L 23/552 (2013.01); H01L 23/66 (2013.01); H01L 24/16 (2013.01); H03F 1/0205 (2013.01); H03F 3/213 (2013.01); H01F 2017/008 (2013.01); H01L 24/13 (2013.01); H01L 2223/6644 (2013.01); H01L 2224/13025 (2013.01); H01L 2224/16225 (2013.01); H01L 2924/3025 (2013.01); H03F 2200/114 (2013.01); H03F 2200/273 (2013.01); H03F 2200/451 (2013.01); H03F 2200/534 (2013.01); H03F 2200/541 (2013.01); H03F 2203/21106 (2013.01); H03F 2203/21142 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power amplifier module, comprising:
a first substrate having a first main surface, a second main surface, and a plurality of wiring layers;
a second substrate having a first main surface that faces the first main surface of the first substrate, at least part of the second substrate overlapping the first substrate in a direction perpendicular to the first main surface of the first substrate,
a first amplifier circuit on or in the second substrate;
a second amplifier circuit on or in the second substrate, each of the first amplifier circuit and the second amplifier circuit being configured to amplify power;
a first transformer comprising:
a primary winding having a first end to which a signal is input, and a second end electrically coupled to a first reference potential, and
a secondary winding having a first end electrically coupled to an input terminal of the first amplifier circuit, and a second end electrically coupled to an input terminal of the second amplifier circuit;
a second transformer on or in the first substrate at a position that does not overlap the first transformer in the direction perpendicular to the first main surface of the first substrate, and at one or more of the plurality of wiring layers, the second transformer comprising:
a primary winding having a first end electrically coupled to an output terminal of the first amplifier circuit, and a second end electrically coupled to an output terminal of the second amplifier circuit, and
a secondary winding having a first end from which a signal is output, and a second end electrically coupled to a second reference potential; and
a plurality of first conductors on or in the first substrate between the first transformer and the second transformer.