Invention Grant
- Patent Title: Power amplifier module
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Application No.: US16013039Application Date: 2018-06-20
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Publication No.: US10256778B2Publication Date: 2019-04-09
- Inventor: Shota Ishihara , Seiko Ono , Yusuke Shimamune , Fuminori Morisawa , Shizuki Nakajima , Yuri Honda , Kazuhiro Koshio , Masato Sato
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Pearne & Gordon LLP
- Priority: JP2016-184752 20160921
- Main IPC: H03F3/21
- IPC: H03F3/21 ; H03F3/24 ; H03F3/191 ; H03F1/34 ; H03F1/22 ; H03F1/02

Abstract:
A power amplifier module includes a first current source that outputs a first current corresponding to a level control voltage for controlling a signal level of an amplified signal, a second current source that outputs a second current corresponding to the level control voltage, a first transistor in which an input signal and a first bias current are supplied to a base and an emitter is grounded, a second transistor in which an emitter is connected to a collector of the first transistor, the second current is supplied to a base, and a first amplified signal obtained by amplifying the input signal is output from a collector, and a third transistor in which the first current is supplied to a collector, a bias control current or voltage is supplied to a base, and the first bias current is supplied from an emitter to the base of the first transistor.
Public/Granted literature
- US20180302045A1 POWER AMPLIFIER MODULE Public/Granted day:2018-10-18
Information query
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