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公开(公告)号：US09871541B2
公开(公告)日：2018-01-16
申请号：US15455860
申请日：2017-03-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takayuki Tsutsui , Satoshi Tanaka , Hidenori Obiya
CPC classification number: H04B1/0475 , H03F1/0277 , H03F1/32 , H03F3/195 , H03F3/211 , H03F3/24 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/111 , H03F2200/318 , H03F2200/408 , H03F2200/411 , H03F2200/451 , H03F2203/7209 , H04B1/0458 , H04B15/00 , H04B2001/0408
Abstract: A power amplification module includes a first input terminal arranged to receive a first transmission signal in a first frequency band, a second input terminal arranged to receive a second transmission signal in a second frequency band higher than the first frequency band, a first amplification circuit that amplifies the first transmission signal, a second amplification circuit that amplifies the second transmission signal, a first filter circuit located between the first input terminal and the first amplification circuit, and a second filter circuit located between the second input terminal and the second amplification circuit. The first filter circuit is a low-pass filter that allows the first frequency band to pass therethrough and that attenuates a harmonic of the first transmission signal and the second transmission signal. The second filter circuit is a high-pass filter that allows the second frequency band to pass therethrough and that attenuates the first transmission signal.
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公开(公告)号：US09825594B2
公开(公告)日：2017-11-21
申请号：US15274313
申请日：2016-09-23
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuo Watanabe , Satoshi Tanaka , Kazuhito Nakai , Takayuki Tsutsui
CPC classification number: H03F1/3205 , H03F1/02 , H03F1/0261 , H03F1/302 , H03F1/32 , H03F3/19 , H03F3/211 , H03F3/24 , H03F3/245 , H03F2200/18 , H03F2200/21 , H03F2200/451 , H03F2201/3215 , H03F2203/21106 , H04B1/0475 , H04B2001/045
Abstract: A power amplification module includes: a first transistor that amplifies a first radio frequency signal and outputs a second radio frequency signal; a second transistor that amplifies the second radio frequency signal and outputs a third radio frequency signal; and first and second bias circuits that supply first and second bias currents to bases of the first and second transistors. The first bias circuit includes a third transistor that outputs the first bias current from its emitter or source, a capacitor that is input with the first radio frequency signal and connected to the base of the first transistor, a first resistor connected between the emitter or source of the third transistor and the base of the first transistor, a second resistor connected between the capacitor and the emitter or source of the third transistor, and a third resistor connected between the capacitor and the base of the first transistor.
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公开(公告)号：US09807703B2
公开(公告)日：2017-10-31
申请号：US15598608
申请日：2017-05-18
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：US09673763B2
公开(公告)日：2017-06-06
申请号：US14926441
申请日：2015-10-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuo Watanabe , Satoshi Tanaka , Norio Hayashi , Kazuma Sugiura
CPC classification number: H03F1/0205 , H03F1/0222 , H03F1/56 , H03F3/19 , H03F3/21 , H03F3/211 , H03F3/245 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03F2200/516 , H03F2200/555 , H03F2200/75
Abstract: The present disclosure is to improve the power added efficiency of a power amplifier at high output power. The power amplifier includes: a first capacitor with a radio frequency signal input to one end thereof; a first transistor whose base is connected to the other end of the first capacitor to amplify the radio frequency signal; a bias circuit for supplying bias to the base of the first transistor; and a second capacitor with one end connected to the base of the first transistor and the other end connected to the emitter of the first transistor.
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公开(公告)号：US09642103B2
公开(公告)日：2017-05-02
申请号：US15082567
申请日：2016-03-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Takayuki Tsutsui , Yusuke Tanaka , Hayato Nakamura , Kazuhito Nakai
CPC classification number: H04W52/52 , H03F1/0261 , H03F3/195 , H03F3/245 , H03F3/68 , H03F2200/111 , H04B7/265 , H04L5/14 , H04W72/042 , H04W88/06
Abstract: Provided is a communication unit that includes first and second power-amplification modules, which can be integrated. The first power-amplification module includes a first power-amplifier for a first frequency band in a first communication scheme, a second power-amplifier for a second frequency band in the first communication scheme, a third power-amplifier for a third frequency band in a second communication scheme, a fourth power-amplifier for a fourth frequency band in the second communication scheme, a first bias circuit that generates a first bias current to the first and second power-amplifiers, and a bias current circuit that converts the first bias current into a second bias current to the third and fourth power-amplifiers. The second power-amplification module includes a fifth power-amplifier for a fifth frequency band in the first communication scheme, and a second bias circuit that generates a third bias current to the fifth power-amplifier.
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Patent Agency Ranking
96.发明授权公开(公告)号：US09585105B2
公开(公告)日：2017-02-28
申请号：US15241991
申请日：2016-08-19
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.
Abstract translation: 高频信号处理装置和无线通信装置可以实现功耗的降低。 例如，当向高频功率放大器指示的功率电平等于或大于第二参考值时，通过使源电压控制电路使用检测结果控制高速DCDC转换器来执行包络跟踪 包络检测电路，并使偏置控制电路指示固定的偏置值。 源电压控制电路和偏置控制电路指示当所指示的功率电平在第二参考值到第一参考值的范围内时，源电压和偏置值与指示功率电平的减小成比例地减小，以及 当指示的功率电平小于第一参考值时，指示固定的源电压和固定的偏置值。
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公开(公告)号：US20160373069A1
公开(公告)日：2016-12-22
申请号：US15251012
申请日：2016-08-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiichiro Takenaka , Masahiro Ito , Masakazu Hori , Mitsuo Ariie , Hayato Nakamura , Satoshi Arayashiki , Hidetoshi Matsumoto , Tsuyoshi Sato , Satoshi Tanaka
CPC classification number: H03F1/0222 , H03F1/02 , H03F1/0216 , H03F1/0261 , H03F1/32 , H03F1/42 , H03F1/52 , H03F1/56 , H03F3/04 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/408 , H03F2200/411 , H03F2200/444 , H03F2200/451 , H03G3/004
Abstract: Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first power amplifier circuit that amplifies a radio frequency signal and that outputs a first amplified signal, a second power amplifier circuit that amplifies the first amplified signal on the basis of a source voltage varying depending on amplitude of the radio frequency signal and that outputs a second amplified signal, and a matching circuit that includes first and second capacitors connected in series between the first and second power amplifier circuit and an inductor connected between a node between the first and second capacitors and a ground and that decreases a gain of the first power amplifier circuit as the source voltage of the second power amplifier circuit increases.
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公开(公告)号：US20160134242A1
公开(公告)日：2016-05-12
申请号：US14926441
申请日：2015-10-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuo Watanabe , Satoshi Tanaka , Norio Hayashi , Kazuma Sugiura
CPC classification number: H03F1/0205 , H03F1/0222 , H03F1/56 , H03F3/19 , H03F3/21 , H03F3/211 , H03F3/245 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03F2200/516 , H03F2200/555 , H03F2200/75
Abstract: The present disclosure is to improve the power added efficiency of a power amplifier at high output power. The power amplifier includes: a first capacitor with a radio frequency signal input to one end thereof; a first transistor whose base is connected to the other end of the first capacitor to amplify the radio frequency signal; a bias circuit for supplying bias to the base of the first transistor; and a second capacitor with one end connected to the base of the first transistor and the other end connected to the emitter of the first transistor.
Abstract translation: 本公开是为了提高功率放大器在高输出功率下的功率附加效率。 功率放大器包括：具有输入到其一端的射频信号的第一电容器; 第一晶体管，其基极连接到第一电容器的另一端以放大射频信号; 偏置电路，用于向第一晶体管的基极提供偏置; 以及第二电容器，其一端连接到第一晶体管的基极，另一端连接到第一晶体管的发射极。
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公开(公告)号：US20150270809A1
公开(公告)日：2015-09-24
申请号：US14640341
申请日：2015-03-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenichi Shimamoto , Satoshi Tanaka , Tadashi Matsuoka
CPC classification number: H03F1/0222 , H03F1/0211 , H03F1/0261 , H03F1/30 , H03F1/56 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/245 , H03F2200/108 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/447 , H03F2200/451 , H03F2200/555
Abstract: A power amplification module includes a first transistor which amplifies and outputs a radio frequency signal input to its base; a current source which outputs a control current; a second transistor connected to an output of the current source, a first current from the control current input to its collector, a control voltage generation circuit connected to the output and which generates a control voltage according to a second current from the control current; a first FET, the drain being supplied with a supply voltage, the source being connected to the base of the first transistor, and the gate being supplied with the control voltage; and a second FET, the drain being supplied with the supply voltage, the source being connected to the base of the second transistor, and the gate being supplied with the control voltage.
Abstract translation: 功率放大模块包括放大并输出输入到其基极的射频信号的第一晶体管; 输出控制电流的电流源; 连接到电流源的输出的第二晶体管，从控制电流输入到其集电极的第一电流，连接到输出并根据来自控制电流的第二电流产生控制电压的控制电压产生电路; 第一FET，所述漏极被供应电源电压，所述源极连接到所述第一晶体管的基极，并且所述栅极被提供所述控制电压; 和第二FET，漏极被供应电源电压，源极连接到第二晶体管的基极，栅极被提供控制电压。
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公开(公告)号：US09106181B2
公开(公告)日：2015-08-11
申请号：US14552597
申请日：2014-11-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masahiro Ito , Kiichiro Takenaka , Satoshi Tanaka , Hidetoshi Matsumoto
CPC classification number: H03F1/0205 , H03F1/02 , H03F1/0227 , H03F1/32 , H03F1/3223 , H03F1/56 , H03F3/193 , H03F3/195 , H03F3/213 , H03F3/245 , H03F2200/18 , H03F2200/222 , H03F2200/318 , H03F2200/372 , H03F2200/387 , H03F2200/411 , H03F2200/451
Abstract: Linearity and power efficiency in a power amplifier circuit are enhanced. The power amplifier circuit includes a first transistor that amplifies a signal input to the base and that outputs the amplified signal from the collector and a first capacitor that is disposed between the base and the collector of the first transistor and that has voltage dependency of a capacitance value lower than that of a base-collector parasitic capacitance value of the first transistor.
Abstract translation: 增强了功率放大器电路中的线性和功率效率。 功率放大器电路包括：第一晶体管，其放大输入到基极的信号并输出来自集电极的放大信号;以及第一电容器，其设置在第一晶体管的基极和集电极之间，并且具有电容的电压依赖性 的值低于第一晶体管的基极 - 集电极寄生电容值的值。
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