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公开(公告)号：US11451198B2
公开(公告)日：2022-09-20
申请号：US16796197
申请日：2020-02-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji Yoshimi
IPC: H03F3/68 , H03F3/21 , H03F3/19 , H03F1/02 , H04B1/04 , H03F3/24 , H03F3/72 , H03F3/195 , H04B1/16
Abstract: A multi-band power amplifier module includes at least one transmission input terminal, at least one power amplifier circuit that receives a first transmission signal and a second transmission signal through the at least one transmission input terminal, a first filter circuit that allows the first transmission signal to pass therethrough, a second filter circuit that allows the second transmission signal to pass therethrough, at least one transmission output terminal through which the first and second transmission signals output from the first and second filter circuits are output, a transmission output switch that outputs each of the first and second transmission signals output from the at least one power amplifier circuit to the first filter circuit or the second filter circuit, and a first tuning circuit that adjusts impedance matching between the at least one power amplifier circuit and the at least one transmission output terminal.
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公开(公告)号：US20200044681A1
公开(公告)日：2020-02-06
申请号：US16055649
申请日：2018-08-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin YOKOYAMA , Shiro Masumoto , Syunji Yoshimi
Abstract: A transmit-and-receive module includes a multiplexer, a power amplifier, and a low-noise amplifier. The multiplexer includes a transmit filter and a receive filter. The power amplifier and the low-noise amplifier are integrated with each other. In a Smith chart, impedance in a receive band of the receive filter seen from a receive terminal intersects a line connecting a center point of noise figure circles and a center point of gain circles. The center point of the noise figure circles represents the impedance at which the noise figure of the low-noise amplifier is minimized. The center point of the gain circles represents the impedance at which the gain of the low-noise amplifier is maximized.
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公开(公告)号：US11381274B2
公开(公告)日：2022-07-05
申请号：US16983417
申请日：2020-08-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jin Yokoyama , Shiro Masumoto , Syunji Yoshimi
Abstract: A transmit-and-receive module includes a multiplexer, a power amplifier, and a low-noise amplifier. The multiplexer includes a transmit filter and a receive filter. The power amplifier and the low-noise amplifier are integrated with each other. In a Smith chart, impedance in a receive band of the receive filter seen from a receive terminal intersects a line connecting a center point of noise figure circles and a center point of gain circles. The center point of the noise figure circles represents the impedance at which the noise figure of the low-noise amplifier is minimized. The center point of the gain circles represents the impedance at which the gain of the low-noise amplifier is maximized.
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公开(公告)号：US10187194B2
公开(公告)日：2019-01-22
申请号：US15718599
申请日：2017-09-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hidetaka Takahashi , Syunji Yoshimi
Abstract: A transmit-and-receive module includes a power amplifier, a low-noise amplifier, first and second phase shifter circuits, and a correction circuit. The power amplifier amplifies power of first and second transmit signals. The low-noise amplifier amplifies first and second received signals without increasing noise. The first and second phase shifter circuits adjust impedance for the first received signal and that for the second received signal. The correction circuit supplies a canceling signal to an output node of the second phase shifter circuit. The canceling signal is used for canceling the first transmit signal passing through a receive filter.
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公开(公告)号：US20150091666A1
公开(公告)日：2015-04-02
申请号：US14561342
申请日：2014-12-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yuki Higashide , Syunji Yoshimi , Kenji Saito
Abstract: As a capacitor Cj is connected in parallel to a non-reciprocal circuit 3, in a predetermined frequency band in which a power amplifier 2 is used, or in other words, in a predetermined frequency band used in communication, an input impedance of the non-reciprocal circuit 3 is adjusted and the length of an impedance curve (reflection coefficient S11) at an input terminal P2 of the non-reciprocal circuit 3 can thus be reduced. In addition, an output impedance of the power amplifier 2 and an input impedance of the non-reciprocal circuit 3 can be matched in a broad band through an interstage matching circuit 7 (input matching circuit 6) provided between an output terminal P1 of the power amplifier 2 and the input terminal P2 of the non-reciprocal circuit 3.
Abstract translation: 作为电容器Cj并联连接到不可逆电路3，在使用功率放大器2的预定频带中，或者换句话说，在通信中使用的预定频带中， 调整了互易电路3，可以减小不可逆电路3的输入端子P2的阻抗曲线（反射系数S11）的长度。 此外，功率放大器2的输出阻抗和不可逆电路3的输入阻抗可以通过设置在电源的输出端子P1之间的级间匹配电路7（输入匹配电路6）在宽带中匹配 放大器2和不可逆电路3的输入端子P2。
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Patent Agency Ranking
公开(公告)号：US12273080B2
公开(公告)日：2025-04-08
申请号：US17817018
申请日：2022-08-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji Tahara , Syunji Yoshimi , Kazuhiro Ikarashi , Yusuke Tanaka , Kenichi Shimamoto , Masatoshi Hase
Abstract: The present disclosure facilitates impedance matching between a power amplifier and filters. A radio-frequency circuit includes a power amplifier, a plurality of transmit filters, a switch, a plurality of first matching networks, and a second matching network. The switch switches the plurality of transmit filters to be coupled to the power amplifier. The plurality of first matching networks are coupled between the plurality of transmit filters and the switch. The second matching network is coupled between the power amplifier and the switch. The second matching network includes a transmission line transformer.
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公开(公告)号：US10355850B2
公开(公告)日：2019-07-16
申请号：US15848423
申请日：2017-12-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji Yoshimi , Takeshi Kogure
Abstract: A high frequency module includes a duplexer that includes a transmission filter, a receive-only filter, and a power amplifier that power-amplifies a transmission signal. In order to improve the isolation characteristics between a transmission signal and a reception signal at the duplexer, the receive-only filter is arranged between the power amplifier and the duplexer.
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公开(公告)号：US20180337643A1
公开(公告)日：2018-11-22
申请号：US15979843
申请日：2018-05-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji Yoshimi
Abstract: A multi-band power amplifier module includes at least one transmission input terminal, at least one power amplifier circuit that receives a first transmission signal and a second transmission signal through the at least one transmission input terminal, a first filter circuit that allows the first transmission signal to pass therethrough, a second filter circuit that allows the second transmission signal to pass therethrough, at least one transmission output terminal through which the first and second transmission signals output from the first and second filter circuits are output, a transmission output switch that outputs each of the first and second transmission signals output from the at least one power amplifier circuit to the first filter circuit or the second filter circuit, and a first tuning circuit that adjusts impedance matching between the at least one power amplifier circuit and the at least one transmission output terminal.
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公开(公告)号：US20150162890A1
公开(公告)日：2015-06-11
申请号：US14628564
申请日：2015-02-23
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji Yoshimi , Kenji Saito , Shingo Yanagihara , Yuki Higashide
CPC classification number: H03H7/38 , H01P1/36 , H01P1/387 , H03H2007/386 , H04B1/0053
Abstract: Isolators are disposed such that DC magnetic fields of permanent magnets intensity with each other, and thus, the input impedance of non-reciprocal circuits 3a and 3b (regulating means 3) is reduced. Accordingly, the impedance conversion ratio between the output impedance of amplifying means 2 and the input impedance of the regulating means 3 is reduced to be relatively small. Thus, by simplifying the configuration of matching means 4 disposed between the amplifying means 2 and the regulating means 3, the insertion loss of the matching means 4 can be reduced, thereby enhancing the efficiency of a circuit module 1. Additionally, it is possible to dispose the non-reciprocal circuits 3a and 3b close to each other so that the DC magnetic fields of the permanent magnets can intensity with each other, thereby increasing the design flexibility of the circuit module 1 and accordingly reducing the size of the circuit module 1.
Abstract translation: 隔离器被布置成使得永磁体的DC磁场彼此强度，因此减小了不可逆电路3a和3b（调节装置3）的输入阻抗。 因此，放大装置2的输出阻抗与调节装置3的输入阻抗之间的阻抗转换比减小到相对较小。 因此，通过简化布置在放大装置2和调节装置3之间的匹配装置4的配置，可以减小匹配装置4的插入损耗，从而提高电路模块1的效率。另外， 将不可逆电路3a和3b彼此靠近，使得永磁体的DC磁场彼此强度相关，从而增加了电路模块1的设计灵活性，从而减小了电路模块1的尺寸。
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公开(公告)号：US11855677B2
公开(公告)日：2023-12-26
申请号：US17937594
申请日：2022-10-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji Yoshimi , Mizuho Ishikawa
CPC classification number: H04B1/40 , H01P5/08 , H03F3/19 , H03H7/0115 , H03F2200/294 , H03F2200/451
Abstract: A high-frequency signal transmission-reception circuit includes a plurality of band pass filter groups each including a plurality of band pass filter pairs; a first switch including a plurality of band pass filter-side terminal groups each including a plurality of band pass filter-side terminals, and an antenna-side terminal group; a plurality of couplers configured to output respective signal strengths of high-frequency signals transmitted on a plurality of transmission paths; and a second switch including an input terminal group electrically connected to the plurality of couplers, and an output terminal configured to output a detection signal output from one of the plurality of couplers. The first switch electrically connects one band pass filter-side terminal in one band pass filter-side terminal group and one antenna-side terminal, and also electrically connects one band pass filter-side terminal in another band pass filter-side terminal group and another antenna-side terminal.
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