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公开(公告)号：US20160134241A1
公开(公告)日：2016-05-12
申请号：US14862865
申请日：2015-09-23
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuma Sugiura , Takashi Yamada , Norio Hayashi , Satoshi Tanaka , Kenichi Shimamoto , Kazuo Watanabe
CPC classification number: H03F1/0205 , H03F1/0222 , H03F3/19 , H03F3/211 , H03F3/245 , H03F2200/451 , H03F2200/516 , H03F2200/555
Abstract: A power amplifier has improved power added efficiency at high output power. The power amplifier includes: a first transistor for amplifying an input signal input to the base thereof and outputting the amplified signal from the collector thereof; a second transistor with power-supply voltage applied to the collector thereof to supply bias voltage or bias current from the emitter thereof to the base of the first transistor; a third transistor whose collector is connected to the collector of the first transistor to amplify the input signal input to the base thereof and output the amplified signal from a collector thereof; a fourth transistor whose base and collector are connected to supply bias from the emitter thereof to the base of the third transistor; and a first resistor with bias control voltage applied to one end thereof and the other end connected to the bases of the second and fourth transistors.
Abstract translation: 功率放大器在高输出功率下提高了功率附加效率。 功率放大器包括：第一晶体管，用于放大输入到其基极的输入信号并从其集电极输出放大的信号; 第二晶体管，其具有施加到其集电极的电源电压，以将偏置电压或偏置电流从其发射极提供给第一晶体管的基极; 第三晶体管，其集电极连接到第一晶体管的集电极，以放大输入到其基极的输入信号，并从其集电极输出放大的信号; 第四晶体管，其基极和集电极连接以从其发射极向第三晶体管的基极提供偏置; 以及具有施加到其一端的偏置控制电压并且另一端连接到第二和第四晶体管的基极的第一电阻器。
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142.发明申请公开(公告)号：US20150011256A1
公开(公告)日：2015-01-08
申请号：US14369216
申请日：2012-12-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Kiichiro Takenaka , Takayuki Tsutsui , Taizo Yamawaki , Shun Imai
IPC: H04W52/24
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，指示固定的源极电压和固定的偏置值。
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公开(公告)号：US12250012B2
公开(公告)日：2025-03-11
申请号：US18155073
申请日：2023-01-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hirotsugu Mori , Satoshi Tanaka
Abstract: A radio-frequency circuit includes a switch and three filters. The switch is connected to an antenna connecting terminal. One filter has a pass band corresponding to a first sub-band and is configured to connect to the antenna connecting terminal via the switch. The first sub-band is included in a first band used for TDD communication. Another filter has a pass band corresponding to a second sub-band included in the first band and is configured to connect to the antenna connecting terminal via the switch. There is a gap between the first sub-band and the second sub-band. The remaining filter has a pass band corresponding to a third sub-band and is configured to connect to the antenna connecting terminal via the switch. The third sub-band includes the first sub-band, the second sub-band, and the gap.
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公开(公告)号：US12244072B2
公开(公告)日：2025-03-04
申请号：US17672696
申请日：2022-02-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hideki Ueda , Yasuhisa Yamamoto , Masashi Omuro , Kazunari Kawahata , Satoshi Tanaka , Ryuken Mizunuma
Abstract: An antenna device comprises a substrate including a planar first region and a planar second region; at least one first radiating element, arranged in the first region, that communicates a radio wave of a first frequency; and at least one second radiating element, arranged in the second region, that communicates a radio wave of a second frequency. A separation direction is a direction of a straight line connecting a first geometric center position of the at least one first radiating element and a second geometric center position of the at least one second radiating element, and in a case that the second region is viewed along a normal direction of the second region, an angle formed by the separation direction and a polarization direction of the at least one second radiating element is equal to or greater than 45° and equal to or less than 90°.
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公开(公告)号：US12177790B2
公开(公告)日：2024-12-24
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 , H03F1/02 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/24 , H04B1/04 , H04W52/02 , 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：US12119793B2
公开(公告)日：2024-10-15
申请号：US17193494
申请日：2021-03-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takashi Yamada , Satoshi Tanaka , Yasuhisa Yamamoto
CPC classification number: H03F3/21 , H01L23/49822 , H01L23/642 , H01L23/645 , H01L24/16 , H01L25/16 , H03F1/56 , H01L2224/16014 , H01L2224/16227 , H03F2200/387 , H03F2200/447
Abstract: A power amplifier module includes a substrate, an amplifier circuit including a plurality of transistors to be mounted on the substrate and a bump connected to the plurality of transistors, a harmonic termination circuit and an output matching circuit that are disposed in or on the substrate and configured to be electrically connected to the amplifier circuit, a connection pad disposed on the substrate and configured to be connected to the bump, and a plurality of connection wiring lines branching from the connection pad. The plurality of connection wiring lines include at least a first connection wiring line that connects the connection pad and the harmonic termination circuit to each other, a second connection wiring line that connects the connection pad and the output matching circuit to each other, and a third connection wiring line that connects the connection pad and an external power supply to each other.
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公开(公告)号：US11817837B2
公开(公告)日：2023-11-14
申请号：US17129041
申请日：2020-12-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yuri Honda , Satoshi Tanaka , Yasuhisa Yamamoto , Hiroki Shonai
CPC classification number: H03F3/245 , H03F3/195 , H03F2200/102 , H03F2200/171 , H03F2200/451 , H03F2200/537
Abstract: A power amplifier circuit has an input node from which an input signal, which is a high-frequency signal, is inputted and an output node to which the input signal is amplified by a differential amplifier circuit to be outputted as an output signal. The power amplifier circuit includes a balun transformer (second balun transformer) including an input-side winding that has a substantially center to which a power-supply voltage is supplied and that is connected between differential outputs of the differential amplifier circuit, and an output-side winding that is coupled to the input-side winding via an electromagnetic field and that has one end connected to a reference potential; and a capacitive element (capacitor) provided between another end (node) of the output-side winding and the output node.
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公开(公告)号：US11611942B2
公开(公告)日：2023-03-21
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 , 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：US11611361B2
公开(公告)日：2023-03-21
申请号：US17032345
申请日：2020-09-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazunari Kawahata , Ryuken Mizunuma , Hideki Ueda , Satoshi Tanaka , Masashi Omuro , Yasuhisa Yamamoto
Abstract: A feed line connects an RFIC and a radiating element. A baseband ground plane (BB ground) is connected to a ground terminal of a BBIC. A radio frequency ground plane (RF ground) is placed in such a manner as to overlap the BB ground. The RF ground serves as a return path of the feed line. A first inter-ground connection circuit connects the BB ground and the RF ground. Furthermore, a second inter-ground connection circuit connects the BB ground and the RF ground. Connecting parts between these grounds and the second inter-ground connection circuit are arranged closer to the edges of these grounds than connecting parts between these grounds and the first inter-ground connection circuit. The connecting part between the ground and the second inter-ground connection circuit is placed on one side of a certain imaginary straight line that passes substantially the geometric center of the ground.
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公开(公告)号：US11558014B2
公开(公告)日：2023-01-17
申请号：US17323505
申请日：2021-05-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Satoshi Tanaka , Satoshi Arayashiki , Satoshi Goto , Yusuke Tanaka
Abstract: A power amplifier circuit includes a first transistor having an emitter electrically connected to a common potential, a base to which a first high-frequency signal is input, and a collector from which a third high-frequency signal is output; a second transistor having an emitter electrically connected to the common potential, a base to which a second high-frequency signal is input, and a collector from which a fourth high-frequency signal is output; a first capacitance circuit electrically connected between the collector of the second transistor and the base of the first transistor; and a second capacitance circuit electrically connected between the collector of the first transistor and the base of the second transistor.
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