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公开(公告)号：US20180175999A1
公开(公告)日：2018-06-21
申请号：US15848423
申请日：2017-12-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji YOSHIMI , Takeshi KOGURE
CPC classification number: H04L5/1461 , H01Q1/247 , H04B1/0057 , H04B1/44
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：US20190288826A1
公开(公告)日：2019-09-19
申请号：US16433286
申请日：2019-06-06
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：US20230027206A1
公开(公告)日：2023-01-26
申请号：US17937594
申请日：2022-10-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji YOSHIMI , Mizuho ISHIKAWA
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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Patent Agency Ranking
公开(公告)号：US20230016198A1
公开(公告)日：2023-01-19
申请号：US17933231
申请日：2022-09-19
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：US20220376665A1
公开(公告)日：2022-11-24
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：US20200321997A1
公开(公告)日：2020-10-08
申请号：US16837458
申请日：2020-04-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Syunji YOSHIMI , Mizuho ISHIKAWA
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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公开(公告)号：US20190123888A1
公开(公告)日：2019-04-25
申请号：US16223455
申请日：2018-12-18
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：US20130309985A1
公开(公告)日：2013-11-21
申请号：US13950576
申请日：2013-07-25
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Kenji SAITO , Shingo YANAGIHARA , Tsuyoshi SATO , Syunji YOSHIMI , Kazuyuki WATANABE
CPC classification number: H04B15/00 , H03F3/193 , H04B1/0057 , H04B1/006 , H04B1/525
Abstract: A multiband transmission module includes a power amplifier and a multiband isolator. An output end of the power amplifier is connected to a single input terminal of the multiband isolator. The multiband isolator includes a low-frequency individual isolator and a high-frequency individual isolator. Input ends of the individual isolators are connected to the single input terminal of the multiband isolator. Output ends of the individual isolators are respectively connected to a low-frequency output terminal and a high-frequency output terminal of the multiband isolator.
Abstract translation: 多频带传输模块包括功率放大器和多频带隔离器。 功率放大器的输出端连接到多频带隔离器的单个输入端子。 多频隔离器包括一个低频单独隔离器和一个高频单独隔离器。 单个隔离器的输入端连接到多频段隔离器的单个输入端子。 各个隔离器的输出端分别连接到多频隔离器的低频输出端子和高频输出端子。
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