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    RADIO-FREQUENCY CIRCUIT AND COMMUNICATION DEVICE
    1.
    发明申请
    RADIO-FREQUENCY CIRCUIT AND COMMUNICATION DEVICE 有权

    公开(公告)号：US20220311455A1

    公开(公告)日：2022-09-29

    申请号：US17805498

    申请日：2022-06-06

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Kenji TAHARA ,  Takahiro EGUCHI ,  Hiroyuki NAGAMORI

    IPC: H04B1/00

    Abstract: The sensitivity of a reception filter for receiving a reception signal in a second frequency band corresponding to the 4G or 5G standard is prevented from being degraded by a harmonic of a third transmission signal in a third frequency region corresponding to the 4G or 5G standard. A radio-frequency circuit includes an antenna terminal, a relay terminal, a transmission filter, a reception filter, a variable low-pass filter, and a switch. A first transmission signal in a first frequency band is input to the relay terminal. In communication using the first frequency band, the variable low-pass filter passes the first transmission signal input via the relay terminal. When another harmonic circuit performs communication using the third frequency band, the variable low-pass filter attenuates, among harmonics of the third transmission signal in the third frequency band, a harmonic input via the relay terminal.

    HIGH-FREQUENCY MODULE
    2.
    发明申请
    HIGH-FREQUENCY MODULE 审中-公开
    高频模块

    公开(公告)号：US20140312978A1

    公开(公告)日：2014-10-23

    申请号：US14323116

    申请日：2014-07-03

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Hiroyuki NAGAMORI

    IPC: H03F3/193 ,  H03F3/195

    CPC classification number: H03F3/193 ,  H03F3/195 ,  H03F2200/294 ,  H03F2200/429 ,  H03F2200/451 ,  H04B1/0458 ,  H04B1/0475 ,  H04B1/0483

    Abstract: A high-frequency module includes a wiring substrate including an electrode pattern layer and a via electrode, a plurality of amplifier circuits that are configured to respectively amplify signals in different frequency bands received at the input terminal, and a plurality of matching circuits and a plurality of filter circuits that are provided in correspondence with the respective amplifier circuits and that are connected sequentially to output sides of the respective amplifier circuits. A plurality of signal paths that extend from the output sides of the respective amplifier circuits to the antenna terminal through the corresponding matching circuits and the filter circuits are provided. The electrode pattern layer and the via electrode are grounded and at least one of the electrode pattern layer and the via electrode is arranged between the signal paths.

    Abstract translation: 高频模块包括：布线基板，包括电极图案层和通孔电极;多个放大器电路，被配置为分别放大在输入端子处接收到的不同频带的信号，以及多个匹配电路和多个 的滤波器电路，其被提供为与各个放大器电路对应并且顺序地连接到各个放大器电路的输出侧。 提供了通过相应的匹配电路和滤波器电路从各个放大器电路的输出侧延伸到天线端子的多个信号路径。 电极图案层和通孔电极接地，并且电极图案层和通孔电极中的至少一个布置在信号路径之间。

    RADIO FREQUENCY MODULE AND COMMUNICATION DEVICE
    4.
    发明公开
    RADIO FREQUENCY MODULE AND COMMUNICATION DEVICE 审中-公开

    公开(公告)号：US20240364368A1

    公开(公告)日：2024-10-31

    申请号：US18619172

    申请日：2024-03-28

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Masanari MIURA ,  Hiroyuki NAGAMORI ,  Hiromichi KITAJIMA ,  Takahiro KATAMATA ,  Shogo YANASE ,  Kouichi UENO ,  Hiroyuki KANI

    IPC: H04B1/00 ,  H04B1/04 ,  H04B1/10

    CPC classification number: H04B1/0078 ,  H04B1/0483 ,  H04B1/10

    Abstract: A radio frequency module that includes a first antenna terminal, a second antenna terminal, a TDD filter, a transmission filter, a filter, and a first switch. The first switch has a first common terminal, a second common terminal, a first terminal, a second terminal, and a third terminal. The filter is connected to the first terminal, the TDD filter is connected to the second terminal, and the transmission filter is connected to the third terminal. The first switch is capable of switching between a first connection state and a second connection state. The first connection state connects the first common terminal to the first terminal and the first common terminal to the second terminal simultaneously. The second connection state connects the first common terminal to the first terminal, the first common terminal to the second terminal, and the second common terminal to the third terminal simultaneously.

    FRONTEND CIRCUIT, FRONTEND MODULE, COMMUNICATION APPARATUS, AND MULTIPLEXER
    5.
    发明申请
    FRONTEND CIRCUIT, FRONTEND MODULE, COMMUNICATION APPARATUS, AND MULTIPLEXER 审中-公开

    公开(公告)号：US20200382149A1

    公开(公告)日：2020-12-03

    申请号：US16999534

    申请日：2020-08-21

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Hiroyuki NAGAMORI ,  Akio KANEDA ,  Hiroshi MURANAKA ,  Hideki TSUKAMOTO ,  Daisuke ITO ,  Kiwamu SAKANO ,  Daisuke MIYAZAKI

    IPC: H04B1/18 ,  H04B1/52 ,  H03F3/193 ,  H03F3/24 ,  H04B7/04

    Abstract: A frontend circuit includes a wide-band filter, a transmit filter, and switches. The wide-band filter passes both the receive frequency band of a first communication frequency band and that of a second communication frequency band which is close to or overlaps that of the first communication frequency band. The transmit filter passes the transmit frequency band of the first or second communication frequency band. The switches are capable of simultaneously bringing, into conduction, at least two of multiple filters including the wide-band filter and the transmit filter. In carrier aggregation using the receive frequency bands of the first and second communication frequency bands, the switches simultaneously bring the wide-band filter and the transmit filter into conduction. Thus, in carrier aggregation using signals of multiple communication frequencies simultaneously in communication, attenuation of signals due to signal leakage in two receive frequency bands, which are close to each other, is suppressed.

    RADIO-FREQUENCY CIRCUIT AND COMMUNICATION DEVICE
    6.
    发明公开
    RADIO-FREQUENCY CIRCUIT AND COMMUNICATION DEVICE 审中-公开

    公开(公告)号：US20240097719A1

    公开(公告)日：2024-03-21

    申请号：US18517294

    申请日：2023-11-22

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Takanori UEJIMA ,  Kenji TAHARA ,  Hiroyuki NAGAMORI ,  Takahiro KATAMATA

    IPC: H04B1/00

    CPC classification number: H04B1/0078 ,  H04B1/006

    Abstract: A radio-frequency circuit includes an antenna connection terminal, switch circuits, a duplexer, a low-pass filter, and a high-pass filter. The switch circuit includes a port connected to the antenna connection terminal and ports. The switch circuit includes a single transmission port connected to the port, a simultaneous transmission port connected to ports. The duplexer is connected to the port. The low-pass filter is disposed on a signal path connecting the port and the simultaneous transmission port. The high-pass filter is connected to the port. No filter is disposed on a signal path connecting the port and the single transmission port.

    HIGH FREQUENCY CIRCUIT AND COMMUNICATION APPARATUS
    10.
    发明公开
    HIGH FREQUENCY CIRCUIT AND COMMUNICATION APPARATUS 审中-公开

    公开(公告)号：US20240056108A1

    公开(公告)日：2024-02-15

    申请号：US18495099

    申请日：2023-10-26

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Kenji TAHARA ,  Takanori UEJIMA ,  Hiroyuki NAGAMORI ,  Takahiro KATAMATA

    IPC: H04B1/00

    CPC classification number: H04B1/0057 ,  H04B1/006

    Abstract: A high frequency circuit includes a switch that includes terminals; a switch that includes terminals; a filter that has a pass band including a first band; and a diplexer that includes terminals. The diplexer includes a filter that is connected between the terminals and has a pass band including a first frequency band group containing the first band and a filter that is connected between the terminals and has a pass band including a second frequency band group. The terminal is connected to an antenna terminal. The terminals are connected to one terminal of the filter. The terminal is connected to the terminal. The terminal is connected to the terminal.

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