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公开(公告)号：US11349508B2
公开(公告)日：2022-05-31
申请号：US17066772
申请日：2020-10-09
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Shinya Hitomi , Yuichi Tannan , Hirotsugu Mori
Abstract: A radio frequency module includes: a first filter circuit disposed on a first path that connects an antenna terminal and a first input/output terminal, and having a passband that is a first frequency band; a second filter circuit disposed on a second path that connects the antenna terminal and a second input/output terminal, and having a passband that is a second frequency band higher than the first frequency band; and a band-elimination filter circuit disposed on the second path and having an attenuation band that is a partial band of a third frequency band that belongs to an unlicensed band ranging from 5 GHz or higher, and is higher than the second frequency band. The second filter circuit is an LC filter circuit that includes an inductor and a capacitor.
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公开(公告)号：US10116348B2
公开(公告)日：2018-10-30
申请号：US15635710
申请日：2017-06-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hidenori Obiya , Shinya Hitomi
Abstract: A high-frequency power amplifying module is provided for a communication device that simultaneously uses at least a radio wave in a first band and a radio wave in a second band, and a first high-frequency power amplifier for the first band and a second high-frequency power amplifier for the second band are mounted. The first band and the second band are frequency bands that produce intermodulation distortion of a frequency included in the receive frequency band of the second band, due to a transmit frequency of the first band received by the first high-frequency power amplifier and a transmit frequency of the second band received h the second high-frequency power amplifier. The second high-frequency power amplifier includes a filter that blocks a signal at the transmit frequency of the first band.
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3.发明授权公开(公告)号：US09787334B2
公开(公告)日：2017-10-10
申请号：US15081474
申请日：2016-03-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hidenori Obiya , Hisao Hayafuji , Takaya Wada , Shinya Hitomi
CPC classification number: H04B1/0475 , H03F3/195 , H03F3/211 , H03F3/245 , H03F2200/111 , H03F2200/165 , H03F2200/168 , H03F2200/171 , H03F2200/294 , H03F2200/408 , H03F2200/411 , H03F2200/451 , H03F2203/21157 , H04B1/525
Abstract: A high frequency power amplifier includes a first high frequency amplifier, a final high frequency amplifier, and a tunable filter. The tunable filter is connected between the first high frequency amplifier and the final high frequency amplifier. The first high frequency amplifier and the final high frequency amplifier are each a multimode/multiband power amplifier. The tunable filter is regulated such that its pass band includes the frequency band of a transmission signal and its attenuation band includes the frequency band of a reception signal in a communication band used in transmission and reception. The pass band and the attenuation band are switched by the tunable filter in accordance with the communication band used in transmission and reception.
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公开(公告)号：US09407315B2
公开(公告)日：2016-08-02
申请号：US14688448
申请日：2015-04-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hidenori Obiya , Shinya Mizoguchi , Shinya Hitomi
Abstract: A transmission filter allows a signal in the frequency band of a transmission signal to pass through the transmission filter and blocks signals in other frequency bands. The transmission signal output from the transmission filter is supplied to an antenna via an antenna sharing device and transmitted to the outside. A reflected-signal detector senses the amplitude and the phase of a reflected signal from the antenna and outputs detection signals (DA and DP). A control circuit adjusts control signals (CA and CP) on the basis of the detection signals (DA and DP). A cancellation-signal-output circuit adjusts a cancellation signal in such a manner that the cancellation signal has a phase opposite to that of the reflected signal and an amplitude the same as that of the reflected signal by using the control signals (CA and CP). A multiplexer combines the cancellation signal with a received signal including a noise signal.
Abstract translation: 发送滤波器允许发送信号的频带中的信号通过发送滤波器并阻止其它频带中的信号。 从发送滤波器输出的发送信号通过天线共享装置提供给天线，并发送到外部。 反射信号检测器检测来自天线的反射信号的振幅和相位，并输出检测信号（DA和DP）。 控制电路基于检测信号（DA和DP）来调节控制信号（CA和CP）。 取消信号输出电路以这样的方式调整抵消信号，使得消除信号具有与反射信号相反的相位，并且通过使用控制信号（CA和CP）与反射信号的幅度相同的幅度， 。 复用器将消除信号与包括噪声信号的接收信号组合。
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公开(公告)号：US11509336B2
公开(公告)日：2022-11-22
申请号：US16897465
申请日：2020-06-10
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Shinya Hitomi , Hirotsugu Mori
Abstract: A radio-frequency circuit includes a first power amplifier that outputs a first transmission signal and a second power amplifier that outputs a second transmission signal having a frequency different from a frequency of the first transmission signal. In a period in which the first transmission signal the second transmission signal are simultaneously outputted, at least one of the first power amplifier or the second power amplifier reduces transmission power of the at least one of the first power amplifier or the second power amplifier to cause a power component of intermodulation distortion superimposed on a transmission signal output from the first power amplifier and the second power amplifier to be less than or equal to a threshold value.
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Patent Agency Ranking
公开(公告)号：US11431304B2
公开(公告)日：2022-08-30
申请号：US16908820
申请日：2020-06-23
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Shinya Hitomi , Hidenori Obiya , Hirotsugu Mori
Abstract: A radio-frequency circuit includes a power amplifying circuit configured to amplify a first radio-frequency signal having a first channel bandwidth and a second radio-frequency signal having a second channel bandwidth greater than the first channel bandwidth. The power amplifying circuit is configured to amplify the first radio-frequency signal in an amplifying mode according to an envelope tracking method, and to amplify the second radio-frequency signal in an amplifying mode according to an average power tracking method.
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公开(公告)号：US10340971B2
公开(公告)日：2019-07-02
申请号：US15941078
申请日：2018-03-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hidenori Obiya , Reiji Nakajima , Shinya Hitomi
IPC: H04B1/04 , H04B1/40 , H03F3/195 , H04B1/00 , H03F1/56 , H03F3/19 , H03F3/24 , H03F3/72 , H04B1/18 , H04B1/48
Abstract: A PA module (10A) includes a previous stage amplification element (12) to amplify a high-frequency signal, a posterior stage amplification element (13) to amplify the high-frequency signal amplified by the previous stage amplification element (12), and a variable filter circuit arranged between the previous stage amplification element (12) and the posterior stage amplification element (13) to vary a pass band and an attenuation band in accordance with a frequency band of the high-frequency signal, in which the variable filter circuit includes a filter portion (16) and switches (14 and 15) to vary the pass band and the attenuation band of the variable filter circuit, and the previous stage amplification element (12) and at least a part of the switches (14 and 15) are formed in one chip using a chip A, the posterior stage amplification element (13) are included in a second chip which is different from the chip A.
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公开(公告)号：US10158392B2
公开(公告)日：2018-12-18
申请号：US15090686
申请日：2016-04-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hidenori Obiya , Shinya Mizoguchi , Shinya Hitomi
Abstract: A transmission-reception device includes an antenna duplexer, an antenna, and first and second transmission-reception circuits. A demultiplexer is connected between the first transmission-reception circuit and the antenna duplexer, and a multiplexer is connected between the second transmission-reception circuit and the antenna duplexer. A signal adjusting unit is connected between the demultiplexer and the multiplexer. The amplitude and phase of a third harmonic signal of a first transmission signal reflected by the antenna are detected. The signal adjusting unit adjusts the amplitude and phase of the third harmonic signal demultiplexed by the demultiplexer on the basis of the detection results, and outputs a cancel signal. The multiplexer synthesizes and hence cancels the third harmonic signal reflected by the antenna and the cancel signal with each other.
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9.发明申请HIGH FREQUENCY POWER AMPLIFIER, HIGH FREQUENCY FRONT-END CIRCUIT, AND RADIO COMMUNICATION DEVICE 有权高频功率放大器，高频前端电路和无线电通信设备公开(公告)号：US20160211871A1
公开(公告)日：2016-07-21
申请号：US15081474
申请日：2016-03-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hidenori Obiya , Hisao Hayafuji , Takaya Wada , Shinya Hitomi
CPC classification number: H04B1/0475 , H03F3/195 , H03F3/211 , H03F3/245 , H03F2200/111 , H03F2200/165 , H03F2200/168 , H03F2200/171 , H03F2200/294 , H03F2200/408 , H03F2200/411 , H03F2200/451 , H03F2203/21157 , H04B1/525
Abstract: A high frequency power amplifier includes a first high frequency amplifier, a final high frequency amplifier, and a tunable filter. The tunable filter is connected between the first high frequency amplifier and the final high frequency amplifier. The first high frequency amplifier and the final high frequency amplifier are each a multimode/multiband power amplifier. The tunable filter is regulated such that its pass band includes the frequency band of a transmission signal and its attenuation band includes the frequency band of a reception signal in a communication band used in transmission and reception. The pass band and the attenuation band are switched by the tunable filter in accordance with the communication band used in transmission and reception.
Abstract translation: 高频功率放大器包括第一高频放大器，最终高频放大器和可调谐滤波器。 可调谐滤波器连接在第一高频放大器和最终的高频放大器之间。 第一个高频放大器和最终的高频放大器都是多模/多频带功率放大器。 可调滤波器被调节为使得其通带包括传输信号的频带，并且其衰减频带包括在发送和接收中使用的通信频带中的接收信号的频带。 根据传输和接收中使用的通信频带，通过可调谐滤波器切换通带和衰减频带。
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公开(公告)号：US11856529B2
公开(公告)日：2023-12-26
申请号：US17818843
申请日：2022-08-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shinya Hitomi , Hidenori Obiya , Hirotsugu Mori
CPC classification number: H04W52/36 , H04B7/0613
Abstract: A communication circuit includes a first transfer circuit that includes a first transmitter circuit, and a second transfer circuit that includes a second transmitter circuit that can transmit a signal simultaneously with the first transmitter circuit. The second transmitter circuit is configured to be placed in a transmission halt state when transmission power of the second transmitter circuit resulting from being decreased by a predetermined value is lower than or equal to a threshold.
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