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公开(公告)号：US20190140670A1
公开(公告)日：2019-05-09
申请号：US16237797
申请日：2019-01-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kunitoshi HANAOKA
CPC classification number: H04B1/006 , H04B1/00 , H04B1/0064 , H04B1/18 , H04B1/405 , H04B1/50 , H04L5/001 , H04L5/0035
Abstract: A front end module that performs a CA method includes a signal path through which a signal of a first frequency band propagates, a signal path through which a signal of a second frequency band propagates, a switch module that includes antenna terminals and selection terminals and is connected to antenna elements, and a balun that is disposed at the signal path. First and second balanced terminals of the balun are connected to the selection terminals, and the balun causes a fundamental wave or harmonic of a transmission signal of the first frequency band input through an unbalanced terminal to branch into branch signals having opposite phases and outputs the branch signals to the first balanced terminal and the second balanced terminal.
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Patent Agency Ranking
公开(公告)号：US20230092914A1
公开(公告)日：2023-03-23
申请号：US18057339
申请日：2022-11-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kunitoshi HANAOKA
Abstract: A radio-frequency circuit is provided that includes a power amplifier, a control circuit, an on-off switch, a connection terminal, and a mount board. The power amplifier supports an APT system and an ET system. The control circuit controls the power amplifier by using the APT system and the ET system. The on-off switch is connected in series to a capacitive element connected between a path and the ground. The connection terminal is connected to the capacitive element. Moreover, the control circuit overlies the connection terminal in plan view in the thickness direction of the mount board.
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公开(公告)号：US20210273673A1
公开(公告)日：2021-09-02
申请号：US17320588
申请日：2021-05-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kunitoshi HANAOKA
Abstract: A front-end module includes: a switch module that performs CA for bands A and C and performs non-CA for band B, which is located between these two bands, and that has a common terminal and selection terminals; a duplexer that is connected to the selection terminal and allows band A to pass therethrough; a duplexer that is connected to the selection terminal and allows band C to pass therethrough; an impedance matching network that is connected to the selection terminal; and a reception filter that is connected to the impedance matching network and allows band B to pass therethrough. During CA for bands A and C, a first circuit, which includes the impedance matching network and the reception filter, forms an attenuation pole in the frequency band of band C in the transmission characteristic of a path connecting the duplexer, the common terminal, and the duplexer to each other.
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公开(公告)号：US20200212951A1
公开(公告)日：2020-07-02
申请号：US16815369
申请日：2020-03-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kunitoshi HANAOKA
Abstract: A high-frequency module includes an antenna terminal, a transmission signal terminal, a reception signal terminal, a plurality of earth terminals, a switch, a transmission filter, a reception filter, and a multilayer board. The multilayer board includes a ground electrode arranged between the transmission filter and the reception filter. The plurality of earth terminals include a first earth terminal and a second earth terminal. When the high-frequency module is viewed in a direction perpendicular to a principal surface of the multilayer board, the reception signal terminal is provided between the antenna terminal and the transmission signal terminal, the first earth terminal is provided between the antenna terminal and the reception signal terminal, and the second earth terminal is provided between the reception signal terminal and the transmission signal terminal.
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公开(公告)号：US20170110779A1
公开(公告)日：2017-04-20
申请号：US15394868
申请日：2016-12-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kunitoshi HANAOKA
CPC classification number: H01P5/18 , H01P5/184 , H01P5/187 , H02M1/00 , H03H7/38 , H04B1/04 , H05K1/0243 , H05K1/115 , H05K1/181 , H05K2201/09772 , H05K2201/1003
Abstract: An inductor component is disposed outside a multilayer substrate, and thus a directional coupler defined by an internal wiring electrode and a coil electrode within the inductor component that is mounted on a pair of land electrodes, the multilayer substrate significantly reduces or prevents interference with other high-frequency circuit elements disposed in or on the multilayer substrate. Additionally, if a plurality of inductor components having different inductor characteristics are prepared, a high-frequency module including the multilayer substrate capable of defining the directional coupler whose characteristics are able to adjusted with ease is able to be provided simply by selecting the desired inductor component from the inductor components and replacing that inductor component.
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公开(公告)号：US20160285490A1
公开(公告)日：2016-09-29
申请号：US15173815
申请日：2016-06-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kunitoshi HANAOKA
Abstract: A front end circuit includes a switch including a common terminal and a plurality of individual terminals, in which at least two kinds of reception signals of different frequency bands are input to the common terminal, and in which one of the at least two kinds of reception signals is output to an individual terminal selected from the plurality of individual terminals, and in which a non-selected terminal is grounded, and a balun including a first terminal and a second terminal defining unbalanced ports as well as a third terminal and a fourth terminal defining balanced ports. The first individual terminal of the switch is indirectly connected to the first terminal of the balun and the second individual terminal of the switch is indirectly connected to the second terminal of the balun. The at least two kinds of reception signals are output in a balanced mode from the third terminal and the fourth terminal of the balun.
Abstract translation: 前端电路包括具有公共端子和多个单独端子的开关，其中至少两种不同频带的接收信号被输入到公共端子，并且至少两种接收中的一种 信号被输出到从多个单独终端中选择的单个终端，并且其中未选择的终端接地，以及包括定义不平衡端口的第一终端和第二终端的平衡 - 不平衡变换器以及第三终端和第四终端 定义平衡端口。 交换机的第一个单独终端间接连接到平衡 - 不平衡变换器的第一个终端，并且交换机的第二个独立终端间接连接到平衡 - 不平衡变换器的第二个终端。 至少两种接收信号以平衡 - 不平衡变换器的第三端子和第四端子以平衡模式输出。
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