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公开(公告)号：US20240097629A1
公开(公告)日：2024-03-21
申请号：US18509464
申请日：2023-11-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Yoshiaki SUKEMORI , Kae YAMAMOTO , Ryo WAKABAYASHI
CPC classification number: H03F3/245 , H03F1/0288 , H04B1/04 , H03F2200/451
Abstract: A radio-frequency module includes a module substrate, a carrier amplifier and a peak amplifier, a transformer, and a phase adjustment circuit. The carrier amplifier and the peak amplifier are included in a semiconductor IC. One end of an input-side coil is connected to an output terminal of the carrier amplifier. One end of the output-side coil is connected to a signal output terminal.
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公开(公告)号：US20230298959A1
公开(公告)日：2023-09-21
申请号：US18324314
申请日：2023-05-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki KANI , Yoshihiro YOSHIMURA , Takahiro YAMASHITA , Ryo WAKABAYASHI , Takashi HIROSE , Kiyoshi AIKAWA
IPC: H01L23/367 , H04B1/036 , H01L23/552 , H01L23/66 , H01L23/00 , H01L23/498 , H04B1/04
CPC classification number: H01L23/367 , H04B1/036 , H01L23/552 , H01L23/66 , H01L24/09 , H01L24/16 , H01L23/49827 , H01L23/49816 , H04B1/04 , H04B2001/0408 , H01L2223/6611 , H01L2223/6661 , H01L2224/16227 , H01L2224/09515 , H01L2924/1421 , H01L2924/3025 , H01L2223/6616
Abstract: A possible benefit of the present disclosure is to further improve a heat dissipation property of an electronic component. A high-frequency module includes a mounting substrate, a filter (for example, a transmission filter), a resin layer, a shielding layer, and a metal member. The resin layer covers at least a portion of an outer peripheral surface (for example, an outer peripheral surface) of the filter. The shielding layer covers at least a portion of the resin layer. The metal member is disposed at a first principal surface of the mounting substrate. The metal member is connected to a surface of the filter on the opposite side from the mounting substrate, the shielding layer, and the first principal surface of the mounting substrate.
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公开(公告)号：US20240088841A1
公开(公告)日：2024-03-14
申请号：US18518615
申请日：2023-11-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Yoshiaki SUKEMORI , Kae YAMAMOTO , Ryo WAKABAYASHI , Isao TAKENAKA
CPC classification number: H03F3/19 , H03F1/565 , H04B1/40 , H03F2200/387 , H03F2200/451
Abstract: A radio frequency circuit includes carrier amplifiers and peak amplifiers, transformers, a signal output terminal connected to a first end of an output-side coil, an LC series circuit, and a capacitor. An input-side coil is connected, at its first end, to the carrier amplifier, and is connected, at its second end, to the carrier amplifier. An input-side coil is connected, at its first end, to the peak amplifier, and is connected, at its second end, to the peak amplifier. The LC series circuit is connected between the peak amplifier and the ground. The capacitor is connected to a second end of the output-side coil and a first end of an output-side coil. The output-side coil is connected, at its second end, to the ground.
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公开(公告)号：US20250047250A1
公开(公告)日：2025-02-06
申请号：US18922573
申请日：2024-10-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Ryo WAKABAYASHI , Kae YAMAMOTO , Toshiki MATSUI
Abstract: A radio frequency circuit that includes a carrier amplifier, a transmission line transformer having a main line and a sub line, a signal output terminal, a voltage supply terminal and a capacitor, wherein the main line has one end connected to an output end of a peak amplifier, the main line has another end connected to the signal output terminal, the sub line has one end connected to the one end of the main line, the sub line has another end connected to the voltage supply terminal, and the peak amplifier has the output end connected to the voltage supply terminal with the capacitor interposed therebetween.
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公开(公告)号：US20240204739A1
公开(公告)日：2024-06-20
申请号：US18589440
申请日：2024-02-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Ryo WAKABAYASHI , Kae YAMAMOTO
CPC classification number: H03F3/245 , H03F1/0288 , H03F2200/451
Abstract: A radio frequency circuit includes a carrier amplifier, a peaking amplifier, an input-side coil, an output-side coil, harmonic reduction circuits, and a phase shift line. One end of the input-side coil is connected to the carrier amplifier, and the other end thereof is connected to the peaking amplifier. In the harmonic reduction circuit, an inductor and a capacitor that are connected in series are disposed in series on a path connecting the carrier amplifier and the ground. The harmonic reduction circuit has an inductor and a capacitor that are connected in series and an inductor connected in parallel to the capacitor. The inductor and the capacitor are disposed in series on a path connecting the peaking amplifier and the ground.
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Patent Agency Ranking
公开(公告)号：US20240097626A1
公开(公告)日：2024-03-21
申请号：US18520587
申请日：2023-11-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Ryo WAKABAYASHI , Kae YAMAMOTO , Yoshiaki SUKEMORI
CPC classification number: H03F3/211 , H03F3/213 , H03F2200/451
Abstract: A radio frequency circuit includes a carrier amplifier, a peak amplifier, a transformer, and an impedance converting circuit. One end of an input coil is connected to an output of the carrier amplifier, one end of an output coil is connected to an output terminal. The impedance converting circuit includes main and auxiliary lines. One end of the main line is connected to an output of the peak amplifier, and the other end of the main line is connected to the other end of the input coil. One end of the auxiliary line is connected to the one end of the main line, and the other end of the auxiliary line is connected to ground. A first direction from the one end to the other end of the main line, and a second direction from the other end to the one end of the auxiliary line (302) are the same.
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公开(公告)号：US20240178804A1
公开(公告)日：2024-05-30
申请号：US18434907
申请日：2024-02-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Ryo WAKABAYASHI , Kae YAMAMOTO
IPC: H03F3/24
CPC classification number: H03F3/245 , H03F2200/315 , H03F2200/451
Abstract: The power amplifier circuit includes an amplifier element, a transmission line transformer (TLT) circuit including a first, second and third line, and a switching circuit including a first, second, and third terminal. One end of the first line is coupled to an output terminal of the amplifier element, and the other end of the first line is coupled to one end of the second line. The other end of the second line is coupled to the terminal. One end of the third line is coupled between the one end of the first line and the output terminal of the amplifier element. The other end of the third line is coupled to the terminal. The switching circuit includes a first switch provided between the terminal and ground and a second switch provided between the terminal and ground.
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公开(公告)号：US20240162923A1
公开(公告)日：2024-05-16
申请号：US18418379
申请日：2024-01-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Hiroki SHOUNAI , Kae YAMAMOTO , Ryo WAKABAYASHI
CPC classification number: H04B1/0458 , H04B1/0078 , H04B2001/0408
Abstract: A radio frequency circuit includes power amplifiers, a transformer, a filter having a band A as a pass band, a filter having a band B as a pass band, a filter having a band C as a pass band, matching circuits connected to one end of an output side coil, and matching circuits connected to the other end of the output side coil. The matching circuit includes a capacitor disposed at a first path, a switch connected to the first path and a ground, a switch and an inductor connected in series, and the matching circuit includes a capacitor disposed at a second path, and a switch and an inductor connected in series, and the matching circuit includes a switch connected to a third path and the ground.
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9.发明公开公开(公告)号：US20240154597A1
公开(公告)日：2024-05-09
申请号：US18412131
申请日：2024-01-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Greg DYER , Bryant GARCIA , Doug JACHOWSKI , Robert HAMMOND , Neal FENZI , Ryo WAKABAYASHI
CPC classification number: H03H9/02228 , H03H9/02015 , H03H9/02133 , H03H9/174 , H03H9/205 , H03H9/54
Abstract: An acoustic resonator is provided that includes a substrate; a piezoelectric layer having a portion that forms a diaphragm over a cavity; and IDT on the piezoelectric layer that includes a first conductor level including first and second busbars disposed on respective portions of the piezoelectric layer, a first set of elongated fingers extending from the first bus bar onto the diaphragm, and a second set of elongated fingers extending from the second bus bar onto the diaphragm, the second set of elongated fingers interleaved with the first set of elongated fingers. The acoustic resonator also includes a second conductor level over the piezoelectric layer and covering at least portions of the first and second busbars.
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公开(公告)号：US20240128936A1
公开(公告)日：2024-04-18
申请号：US18394165
申请日：2023-12-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji TAHARA , Ryo WAKABAYASHI , Kae YAMAMOTO
CPC classification number: H03F1/302 , H03F1/0222 , H03F3/195 , H03F3/245 , H03F2200/102 , H03F2200/451
Abstract: A power amplifier circuit includes an amplifier transistor having a collector terminal, an emitter terminal, and a base terminal, bias circuits, and a current limiter circuit. The bias circuit includes a constant current amplifier transistor that supplies direct-current bias current from an emitter terminal to the base terminal. The current limiter circuit includes a current limiting transistor an emitter terminal of which is connected to the bias circuit, a resistive element connected between the current limiting transistor and a power supply terminal, and a resistive element connected between the current limiting transistor and the constant current amplifier transistor. The bias circuit includes a constant current amplifier transistor that supplies direct-current bias current i3 from an emitter terminal to the base terminal.
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