发明申请
- 专利标题: POWER AMPLIFIER CIRCUIT
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申请号: US16111797申请日: 2018-08-24
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公开(公告)号: US20190068129A1公开(公告)日: 2019-02-28
- 发明人: Masahiro Ito , Tsuyoshi Sato , Kiichiro Takenaka , Hidetoshi Matsumoto
- 申请人: Murata Manufacturing Co., Ltd.
- 优先权: JP2017-162632 20170825
- 主分类号: H03F1/26
- IPC分类号: H03F1/26 ; H03F1/02 ; H03F3/24 ; H03F3/19
摘要:
A power amplifier circuit includes a Doherty amplifier including a divider that divides a first signal into a second signal and a third signal, a carrier amplifier that amplifies the second signal and outputs a fourth signal, a peak amplifier that amplifies the third signal and outputs a fifth signal, a combiner that combines the fourth signal and the fifth signal and outputs an amplified signal of the first signal, a first bias circuit that supplies a first bias current or voltage to the carrier amplifier, and a second bias circuit that supplies a second bias current or voltage corresponding to a control signal to the peak amplifier; and a control circuit that supplies the control signal corresponding to a level of the second signal to the second bias circuit. The control circuit includes a detecting unit, an output unit, and a filter circuit.
公开/授权文献
- US10547276B2 Power amplifier circuit 公开/授权日:2020-01-28
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