-
公开(公告)号：US11611367B2
公开(公告)日：2023-03-21
申请号：US17313002
申请日：2021-05-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Daisuke Miyazaki , Hidemori Akagi
Abstract: A radio-frequency module includes a mount board, an antenna terminal and a ground terminal, a low-noise amplifier, a first inductor, and a second inductor. The mount board has a first principal surface and a second principal surface on opposite sides of the mount board from one another. The low-noise amplifier includes a transistor configured to amplify a signal. The first inductor is disposed on one of the first principal surface and the second principal surface of the mount board. The first inductor is connected to the antenna terminal. The second inductor is disposed on the other of the first principal surface and the second principal surface of the mount board. The second inductor is connected between the transistor and the ground terminal.
-
公开(公告)号：US11381262B2
公开(公告)日：2022-07-05
申请号：US17337932
申请日：2021-06-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Daisuke Miyazaki
Abstract: A radio-frequency module supports carrier aggregation in which radio-frequency signals in a plurality of frequency ranges are simultaneously transmitted, simultaneously received, or simultaneously transmitted and received. The radio-frequency module includes a plurality of first filters, a plurality of second filters, a switch coupled to an antenna element and the plurality of first filters and configured to control connection and disconnection between the antenna element and each of the plurality of first filters, and a switch coupled to the antenna element and the plurality of second filters and configured to control connection and disconnection between the antenna element and each of the plurality of second filters. No combination of filters selected from both the plurality of first filters and the plurality of second filters are used for carrier aggregation.
-
公开(公告)号：US11757482B2
公开(公告)日：2023-09-12
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
CPC classification number: H04B1/18 , H03F3/193 , H03F3/245 , H04B1/52 , H04B7/04 , H03F2200/165 , H03F2200/294
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.
-
公开(公告)号：US10075160B2
公开(公告)日：2018-09-11
申请号：US15672480
申请日：2017-08-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Teruaki Oshita , Daisuke Miyazaki , Morio Takeuchi
IPC: H04B1/40 , H04B1/66 , H03K17/693 , H03K17/16 , H03K17/687
CPC classification number: H03K17/693 , H03K17/002 , H03K17/162 , H03K17/6874 , H03K17/6877
Abstract: A switch circuit includes first and second switches. The first switch includes a first common terminal and at least two first selection terminals selectively connected to the first common terminal. The second switch includes at least one second common terminal and at least one second selection terminal selectively connected to the at least one second common terminal. One of the at least two first selection terminals and the at least one second common terminal are connected to each other via a path passing through a first multiplexer. Another one of the at least two first selection terminals and the at least one second common terminal are connected to each other via a bypass path bypassing the first multiplexer.
-
公开(公告)号：US11418226B2
公开(公告)日：2022-08-16
申请号：US17167078
申请日：2021-02-04
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Daisuke Miyazaki
Abstract: A radio frequency (RF) module includes a board including a first principal surface and a second principal surface on opposite sides of the board, a filter including a first terminal and a second terminal, a first circuit, and a second circuit. The filter is disposed on the first principal surface. The first circuit is disposed on the second principal surface. In a plan view of the board, a first footprint of a first line and a second footprint of a second line at least partially overlap in the board. The first line connects the first terminal and the first circuit, and the second line connects the second terminal and the second circuit.
-
Patent Agency Ranking
公开(公告)号：US20220005644A1
公开(公告)日：2022-01-06
申请号：US17478554
申请日：2021-09-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takahiro Kitazume , Daisuke Miyazaki
Abstract: A module is provided with a substrate having a main surface, and each of one or more inductors that are disposed on the main surface of the substrate. A resin sealing portion seals the one or more inductors and covers the main surface of the substrate. A ground conductor is disposed on an outer peripheral side of the substrate with respect to entirety of the one or more inductors in a plan view. A plurality of linear conductors are disposed on the resin sealing portion. The plurality of linear conductors are disposed with gaps therebetween, such that the one or more inductors underlie at least one of the plurality of linear conductors in the plan view.
-
公开(公告)号：US11881840B2
公开(公告)日：2024-01-23
申请号：US17454636
申请日：2021-11-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Daisuke Miyazaki
CPC classification number: H03H9/54 , H01L23/66 , H01L24/14 , H01L25/16 , H03F3/195 , H03H9/13 , H03H11/28 , H01L24/16 , H01L2223/6655 , H01L2224/14155 , H01L2224/16225 , H01L2924/14215 , H03F2200/294 , H03F2200/451 , H04B1/40
Abstract: When a radio-frequency module is viewed in plan in a thickness direction of a mounting substrate, an electronic component overlaps an IC component. The electronic component includes four or more filters, each of which includes an input terminal and an output terminal. The IC component includes a first switch connected to the input terminals of at least four of the four or more filters and a second switch connected to the output terminals of the at least four filters. The input terminals of the at least four filters are in a first region including a center of the electronic component when viewed in plan in the thickness direction of the mounting substrate. The output terminals of the at least four filters are in a second region between the first region and a perimeter of the electronic component when viewed in plan in the thickness direction of the mounting substrate.
-
公开(公告)号：US11206010B2
公开(公告)日：2021-12-21
申请号：US16788805
申请日：2020-02-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Daisuke Miyazaki
IPC: H03H9/64 , H03F3/195 , H03F3/68 , H03H1/00 , H03H7/18 , H03H9/145 , H03H9/25 , H04B1/44 , H03H9/72
Abstract: A radio frequency module includes a switch circuit that includes selection terminals, a filter that allows the signal in the first frequency band to pass therethrough, a filter that allows the signal in the second frequency band to pass therethrough, a phase adjustment circuit that is connected to the selection terminal and the filter, and a phase adjustment circuit that is connected to the selection terminal and the filter. The filter includes an acoustic wave resonator that is formed on a substrate that has piezoelectricity. The filter includes an acoustic wave resonator that is formed on a substrate that has piezoelectricity. At least one of circuit elements that are included in the phase adjustment circuit is formed on the substrate. At least one of circuit elements that are included in the phase adjustment circuit is formed on the substrate.
-
公开(公告)号：US10756768B2
公开(公告)日：2020-08-25
申请号：US16360248
申请日：2019-03-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Daisuke Miyazaki , Morio Takeuchi
Abstract: A radio-frequency front-end circuit includes first and second filters, and first and second band elimination filters. The first filter is connected between an antenna common terminal and a first input-output terminal, and has a first frequency band as a pass band. The second filter is connected between the antenna common terminal and a second input-output terminal, and has a second frequency band as a pass band. The first band elimination filter is connected between the antenna common terminal and a third input-output terminal, and has the first frequency band as a stop band. The second band elimination filter is connected in series with the first band elimination filter between the antenna common terminal and the third input-output terminal, and has the second frequency band as a stop band.
-
公开(公告)号：US09998097B2
公开(公告)日：2018-06-12
申请号：US15646334
申请日：2017-07-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Morio Takeuchi , Daisuke Miyazaki , Tetsuro Okuda
CPC classification number: H03H9/70 , H03H9/0211 , H03H9/02559 , H03H9/02574 , H03H9/14541 , H03H9/205 , H03H9/582 , H03H9/703 , H03H9/72 , H04B1/40
Abstract: A radio-frequency front-end circuit includes a first filter that has a first pass band and is connected to an antenna common terminal, a second filter that has a second pass band and is connected to the antenna common terminal, a switch that includes a common terminal and selection terminals, the common terminal being connected to the first filter, and a third filter that is connected to one of the selection terminals and is disposed between the switch and an input/output terminal. A reflection coefficient of the first filter alone in the second pass band viewed from the antenna common terminal is larger than a reflection coefficient of the third filter alone in the second pass band viewed from the antenna common terminal.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.02 seconds)
