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

IPC: H04W52/24 ,  H04W52/02 ,  H03F3/189 ,  H03F3/24 ,  H04B1/04 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21

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.

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

IPC: H04W52/24 ,  H03F1/02 ,  H03F3/189 ,  H03F3/19 ,  H03F3/21 ,  H03F3/24 ,  H04B1/04 ,  H04W52/02

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.

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

IPC: H04W52/24 ,  H04W52/02 ,  H03F3/189 ,  H03F3/24 ,  H04B1/04 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21

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.

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

IPC: H04W52/24 ,  H03F3/21 ,  H03F1/02 ,  H03F3/19 ,  H04W52/02 ,  H04B1/04 ,  H03F3/24 ,  H03F3/189

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.

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

IPC: H04W52/24 ,  H03F1/02 ,  H04W52/02 ,  H03F3/19 ,  H03F3/189 ,  H03F3/24 ,  H03F3/21 ,  H04B1/04

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.

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

IPC: H04W52/24 ,  H04W52/02 ,  H03F3/189 ,  H03F3/24 ,  H04B1/04 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21

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.

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

IPC: H04W52/24 ,  H04B1/04 ,  H03F3/189 ,  H03F3/24 ,  H03F1/02 ,  H03F3/21 ,  H04W52/02 ,  H03F3/19

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.