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公开(公告)号：US20190036553A1
公开(公告)日：2019-01-31
申请号：US16047186
申请日：2018-07-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yushi Sugimoto , Jin Yokoyama , Tomohide Aramata
CPC classification number: H04B1/006 , H03H7/09 , H03H9/0004 , H03H9/542 , H03H9/568 , H03H9/605 , H03H9/6436 , H03H9/6483 , H03H9/70 , H03H9/706 , H03H9/725 , H03H2001/0085 , H04B1/0057 , H04B1/48 , H04L5/1461
Abstract: A duplexer includes first and second filter circuits and first and second wirings. The first filter circuit allows a signal of a first frequency band to pass therethrough between a first terminal and a common terminal and includes a first resonator which is connected at one end to a line disposed between the first terminal and the common terminal to branch off from the line. The second filter circuit allows a signal of a second frequency band, which is different from the first frequency band, to pass therethrough between a second terminal and the common terminal. The first wiring is connected at one end to the common terminal and is opened at the other end. The second wiring is connected at one end to the other end of the first resonator and is grounded at the other end. The first wiring is electromagnetically coupled with second wiring.
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公开(公告)号：US20180167094A1
公开(公告)日：2018-06-14
申请号：US15834855
申请日：2017-12-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tomohide Aramata
CPC classification number: H04B1/1081 , H03H7/38 , H03H7/465 , H04B1/00 , H04B1/10 , H04B1/18 , H04B1/401 , H04B1/52 , H04B1/56 , H04L5/14
Abstract: A communication module includes a first switch circuit that receives a first or second received signal and that outputs the first received signal from a first terminal thereof or the second received signal from a second terminal thereof, a first low-noise amplifier that amplifies the first received signal, a second low-noise amplifier that amplifies the second received signal, a first filter circuit disposed between the first switch circuit and the first low-noise amplifier, and a second filter circuit disposed between the first switch circuit and the second low-noise amplifier. The first filter circuit has greater signal loss than the second filter circuit. A signal path from the first terminal of the first switch circuit to the first low-noise amplifier via the first filter circuit has a shorter length than that from the second terminal of the first switch circuit to the second low-noise amplifier via the second filter circuit.
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Patent Agency Ranking
公开(公告)号：US10153797B2
公开(公告)日：2018-12-11
申请号：US15834855
申请日：2017-12-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tomohide Aramata
IPC: H04B1/10 , H03H7/46 , H04B1/00 , H04B1/18 , H04B1/401 , H04B1/52 , H04B1/56 , H04L5/14 , H03H7/38
Abstract: A communication module includes a first switch circuit that receives a first or second received signal and that outputs the first received signal from a first terminal thereof or the second received signal from a second terminal thereof, a first low-noise amplifier that amplifies the first received signal, a second low-noise amplifier that amplifies the second received signal, a first filter circuit disposed between the first switch circuit and the first low-noise amplifier, and a second filter circuit disposed between the first switch circuit and the second low-noise amplifier. The first filter circuit has greater signal loss than the second filter circuit. A signal path from the first terminal of the first switch circuit to the first low-noise amplifier via the first filter circuit has a shorter length than that from the second terminal of the first switch circuit to the second low-noise amplifier via the second filter circuit.
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公开(公告)号：US10985785B2
公开(公告)日：2021-04-20
申请号：US16534140
申请日：2019-08-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yushi Sugimoto , Jin Yokoyama , Tomohide Aramata
IPC: H04B1/00 , H03H9/00 , H04B1/48 , H03H9/70 , H04L5/14 , H03H9/56 , H03H9/54 , H03H9/60 , H03H9/64 , H03H9/72 , H03H7/09 , H03H1/00
Abstract: A duplexer includes first and second filter circuits and first and second wirings. The first filter circuit allows a signal of a first frequency band to pass therethrough between a first terminal and a common terminal and includes a first resonator which is connected at one end to a line disposed between the first terminal and the common terminal to branch off from the line. The second filter circuit allows a signal of a second frequency band, which is different from the first frequency band, to pass therethrough between a second terminal and the common terminal. The first wiring is connected at one end to the common terminal and is opened at the other end. The second wiring is connected at one end to the other end of the first resonator and is grounded at the other end. The first wiring is electromagnetically coupled with second wiring.
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公开(公告)号：US10419038B2
公开(公告)日：2019-09-17
申请号：US16047186
申请日：2018-07-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yushi Sugimoto , Jin Yokoyama , Tomohide Aramata
IPC: H04B1/00 , H03H9/00 , H04B1/48 , H03H9/70 , H04L5/14 , H03H9/56 , H03H9/54 , H03H9/60 , H03H9/64 , H03H9/72 , H03H7/09 , H03H1/00
Abstract: A duplexer includes first and second filter circuits and first and second wirings. The first filter circuit allows a signal of a first frequency band to pass therethrough between a first terminal and a common terminal and includes a first resonator which is connected at one end to a line disposed between the first terminal and the common terminal to branch off from the line. The second filter circuit allows a signal of a second frequency band, which is different from the first frequency band, to pass therethrough between a second terminal and the common terminal. The first wiring is connected at one end to the common terminal and is opened at the other end. The second wiring is connected at one end to the other end of the first resonator and is grounded at the other end. The first wiring is electromagnetically coupled with second wiring.
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公开(公告)号：US08766727B2
公开(公告)日：2014-07-01
申请号：US13949261
申请日：2013-07-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tomohide Aramata
IPC: H03F3/193
CPC classification number: H03F3/193 , H03F1/565 , H03F3/191 , H03F3/24 , H03F2200/387 , H03F2200/391 , H03F2200/421
Abstract: A power amplification circuit amplifies and then outputs transmission signals of a first frequency and a second frequency, which are different from each other. When the transmission signal of the first frequency is input, a first switch is turned ON, a first LC parallel resonant circuit enters a resonant state and the transmission signal is transmitted using a line containing a first capacitor as a main line. When the transmission signal of the second frequency is input, a second switch is turned ON, a second LC parallel resonant circuit enters a resonant state and the transmission signal is transmitted using a line containing a second capacitor as a main line. Therefore, a transmission signal does not pass through, using as a main line, a line into which a switch has been incorporated.
Abstract translation: 功率放大电路放大并输出彼此不同的第一频率和第二频率的发送信号。 当输入第一频率的发送信号时，第一开关导通，第一LC并联谐振电路进入谐振状态，并且使用包含第一电容器作为主线的线来发送发送信号。 当输入第二频率的发送信号时，第二开关导通，第二LC并联谐振电路进入谐振状态，并且使用包含第二电容器的线作为主线发送发送信号。 因此，作为主线，传输信号不通过已经并入开关的线路。
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公开(公告)号：US12126308B2
公开(公告)日：2024-10-22
申请号：US18055957
申请日：2022-11-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takeshi Kogure , Tomohide Aramata
Abstract: A tracker module is provided that includes a second substrate that is separate from a first substrate, a tracker component, and a low pass filter. A power amplifier is disposed on or in the first substrate. Moreover, the tracker component supplies a power supply voltage to the power amplifier. The low pass filter is disposed on a path between an output terminal of the tracker component and the power amplifier. The tracker component and the low pass filter are disposed on or in the second substrate.
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