Invention Grant
- Patent Title: Power amplifier circuit
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Application No.: US17038988Application Date: 2020-09-30
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Publication No.: US11463060B2Publication Date: 2022-10-04
- Inventor: Yuri Honda , Fumio Harima , Yoshiki Kogushi , Shota Ishihara , Fuminori Morisawa
- 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
- Main IPC: H03F1/22
- IPC: H03F1/22 ; H03G3/30 ; H03F3/21 ; H03F3/195 ; H03F1/02 ; H03G1/00

Abstract:
The present disclosure provides a power amplifier circuit capable of suppressing the occurrence of noises while enabling control of an output power level. The power amplifier circuit includes a first transistor that amplifies a first signal; a bias circuit that supplies a bias current or voltage based on a control signal to the first transistor; a second transistor to which a control current based on the control signal is supplied, which has an emitter or a source thereof connected to a collector or a drain of the first transistor, and from which a second signal obtained by amplifying the first signal is output; and a first feedback circuit provided between the collector or the drain of the second transistor and the base or the gate of the second transistor.
Public/Granted literature
- US20210013855A1 POWER AMPLIFIER CIRCUIT Public/Granted day:2021-01-14
Information query
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