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公开(公告)号：US11929721B2
公开(公告)日：2024-03-12
申请号：US17223384
申请日：2021-04-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Yoshiaki Sukemori , Takeshi Kogure , Shohei Imai
CPC classification number: H03F3/245 , H03F1/0288 , H03F3/195 , H03F3/68 , H03F2200/451
Abstract: A power amplifier module includes a first amplifier, a power splitter, a second amplifier, a third amplifier, a phase shifter, a combining unit, and a controller. The first amplifier amplifies a first signal and outputs a second signal. The power splitter splits the second signal into a third signal and a fourth signal. The second amplifier amplifies the third signal and outputs a fifth signal. The third amplifier amplifies the fourth signal and outputs a sixth signal. The phase shifter receives the fifth signal and shifts a phase of the fifth signal. The combining unit combines the fifth signal having the phase shifted by the phase shifter and the sixth signal and outputs an amplified signal of the second signal. The controller outputs a first control signal for controlling a power level of the sixth signal output from the third amplifier.
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公开(公告)号：US11824501B2
公开(公告)日：2023-11-21
申请号：US17339539
申请日：2021-06-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei Imai
CPC classification number: H03F1/0288 , H03F3/45475 , H03F2200/451
Abstract: A power amplifier circuit includes a first amplifier that, in a region where an input signal level is a first level or higher, amplifies a signal split from an input signal and outputs an amplified signal; a first converter connected to an output side of the first amplifier and converts an impedance on the output side of the first amplifier; and at least one or more second amplifiers that, in a region where the input signal level is a second level or higher, amplify a signal split from the input signal and output an amplified signal. Output sides of the second amplifiers are connected in series with an output side of the first converter. The first converter makes an absolute value of the impedance on the output side of the first amplifier larger than absolute values of impedances on the output sides of the second amplifiers.
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公开(公告)号：US12176861B2
公开(公告)日：2024-12-24
申请号：US18506246
申请日：2023-11-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shohei Imai
Abstract: A power amplifier circuit includes a first amplifier that, in a region where an input signal level is a first level or higher, amplifies a signal split from an input signal and outputs an amplified signal; a first converter connected to an output side of the first amplifier and converts an impedance on the output side of the first amplifier; and at least one or more second amplifiers that, in a region where the input signal level is a second level or higher, amplify a signal split from the input signal and output an amplified signal. Output sides of the second amplifiers are connected in series with an output side of the first converter.
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