-
公开(公告)号：US20210242842A1
公开(公告)日：2021-08-05
申请号：US17168618
申请日：2021-02-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroaki TOKUYA , Hideyuki SATO , Fumio HARIMA , Kenichi SHIMAMOTO , Satoshi TANAKA , Takayuki KAWANO , Ryoki SHIKISHIMA , Atsushi KUROKAWA
Abstract: A power amplifier circuit includes a first transistor disposed on a semiconductor substrate; a second transistor disposed on the semiconductor substrate and configured to supply a bias current based on a first current which is a part of a control current to the first transistor; a third transistor disposed on the semiconductor substrate and having a collector configured to be supplied with a second current which is a part of the control current and an emitter configured to output a third current based on the second current; a first bump electrically connected to an emitter of the first transistor and disposed so as to overlap a first disposition area in which the first transistor is disposed in plan view of the semiconductor substrate; and a second bump disposed so as to overlap a second disposition area in which the third transistor is disposed in the plan view.
-
公开(公告)号：US20210218120A1
公开(公告)日：2021-07-15
申请号：US17213814
申请日：2021-03-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Ryoki SHIKISHIMA
IPC: H01P5/18
Abstract: A directional coupler includes: a main line (11) through which a main signal (31) flows; a sub-line (12) through which a sub-signal (32) corresponding to the main signal (31) flows by electromagnetic coupling with the main line (11); and an inductor (13) that is connected in series with one line among the main line (11) and the sub-line (12) and through which one signal among the main signal (31) and the sub-signal (32) flows. A first portion (41) of a first wiring line (21) forming the inductor (13) and a second portion (42) of a second wiring line (22) forming the other line among the main line (11) and the sub-line (12) are electromagnetically coupled with each other.
-
Search Results
2
records
(took 0.012 seconds)
