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公开(公告)号：US20210235392A1
公开(公告)日：2021-07-29
申请号：US17229412
申请日：2021-04-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Takayuki TSUTSUI , Taizo YAMAWAKI , Shun IMAI
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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公开(公告)号：US20130265111A1
公开(公告)日：2013-10-10
申请号：US13908135
申请日：2013-06-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Ikuma OTA , Hiroaki INOSE , Shun IMAI
IPC: H03F3/193
CPC classification number: H03F3/193 , H03F1/0277 , H03F1/565 , H03F3/191 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/111 , H03F2203/7209 , H04B1/0458 , H04B1/0483
Abstract: A power amplifier includes a first amplifier and a second amplifier which include large and small size elements. An RF input signal is amplified by the first and second amplifiers. An output of the first amplifier is connected to an input of a first output matching circuit. An output of the second amplifier is connected to an input of a second output matching circuit. An output of the second output matching circuit is connected to an RF signal output terminal. In a high power state, the RF input signal is amplified by the first amplifier. In a low power state, the RF input signal is amplified by the second amplifier. In amplification with low power and high frequency, reactances of the second output matching circuit are set at predetermined values. In amplification with low power and low frequency, the reactances of the second output matching circuit are set at larger values.
Abstract translation: 功率放大器包括第一放大器和包括大尺寸和小尺寸元件的第二放大器。 RF输入信号被第一和第二放大器放大。 第一放大器的输出端连接到第一输出匹配电路的输入端。 第二放大器的输出连接到第二输出匹配电路的输入端。 第二输出匹配电路的输出连接到RF信号输出端。 在高功率状态下，RF输入信号由第一放大器放大。 在低功率状态下，RF输入信号由第二放大器放大。 在低功率和高频率的放大中，第二输出匹配电路的电抗被设定为预定值。 在低功率和低频率的放大中，第二输出匹配电路的电抗被设定为更大的值。
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公开(公告)号：US20250080051A1
公开(公告)日：2025-03-06
申请号：US18823880
申请日：2024-09-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shun IMAI
Abstract: A power supply system includes: a first module including a first power amplifier; a first power line supplying power to the first module; a second power line supplying power to the first module; a first capacitance connected at one end to the first power line; a second capacitance connected at one end to the second power line; a first switch that switches between a state in which the first power line is electrically connected to the first module and a state in which the second power line is electrically connected to the first module; a second switch that can connect the second capacitance to a reference potential when the first power line is connected to the first module; and a third switch that can connect the first capacitance to a reference potential when the second power line is connected to the first module.
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公开(公告)号：US20230276372A1
公开(公告)日：2023-08-31
申请号：US18142469
申请日：2023-05-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Takayuki TSUTSUI , Taizo YAMAWAKI , Shun IMAI
CPC classification number: H04W52/246 , H03F1/0227 , H03F1/0277 , H04W52/0251 , H03F3/19 , H03F3/189 , H03F3/24 , H03F3/21 , H04W52/0261 , H03F1/0216 , H04B1/0475 , Y02D30/70 , H03F2200/102 , H03F2200/504 , H03F2200/294 , H04W88/06
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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Patent Agency Ranking
公开(公告)号：US20230199671A1
公开(公告)日：2023-06-22
申请号：US18171881
申请日：2023-02-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Takayuki TSUTSUI , Taizo YAMAWAKI , Shun IMAI
CPC classification number: H04W52/246 , H04W52/0261 , H03F3/189 , H03F3/24 , H04B1/0475 , H03F1/0227 , H03F1/0277 , H04W52/0251 , H03F3/19 , H03F1/0216 , H03F3/21 , Y02D30/70 , H04W88/06
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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公开(公告)号：US20190150100A1
公开(公告)日：2019-05-16
申请号：US16243634
申请日：2019-01-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Takayuki TSUTSUI , Taizo YAMAWAKI , Shun IMAI
CPC classification number: H04W52/246 , H03F1/0216 , H03F1/0227 , H03F1/0277 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/24 , H03F2200/102 , H03F2200/294 , H03F2200/504 , H04B1/0475 , H04W52/0251 , H04W52/0261 , H04W88/06 , Y02D70/00 , Y02D70/1246 , Y02D70/1262 , Y02D70/40
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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公开(公告)号：US20220256477A1
公开(公告)日：2022-08-11
申请号：US17652136
申请日：2022-02-23
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Takayuki TSUTSUI , Taizo YAMAWAKI , Shun IMAI
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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公开(公告)号：US20200374811A1
公开(公告)日：2020-11-26
申请号：US16989993
申请日：2020-08-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Takayuki TSUTSUI , Taizo YAMAWAKI , Shun IMAI
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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公开(公告)号：US20200154368A1
公开(公告)日：2020-05-14
申请号：US16744852
申请日：2020-01-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi TANAKA , Kiichiro TAKENAKA , Takayuki TSUTSUI , Taizo YAMAWAKI , Shun IMAI
Abstract: A high-frequency signal processing apparatus and a wireless communication apparatus can achieve a decrease in power consumption. For example, when an indicated power level to a high-frequency power amplifier is equal to or greater than a second reference value, envelope tracking is performed by causing a source voltage control circuit to control a high-speed DCDC converter using a detection result of an envelope detecting circuit and causing a bias control circuit to indicate a fixed bias value. The source voltage control circuit and the bias control circuit indicate a source voltage and a bias value decreasing in proportion to a decrease in the indicated power level when the indicated power level is in a range of the second reference value to the first reference value, and indicate a fixed source voltage and a fixed bias value when the indicated power level is less than the first reference value.
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