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公开(公告)号：US11616480B2
公开(公告)日：2023-03-28
申请号：US17365397
申请日：2021-07-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shota Ishihara , Hiroshi Okabe , Yasuhisa Yamamoto
Abstract: A power amplifier circuit includes a power amplifier, first and second filters, and first and second output paths. The power amplifier is able to amplify both of a first signal and a second signal. The frequency of the second signal is higher than that of the first signal. The first filter includes a first inductor and attenuates the second signal amplified in the power amplifier. The first inductor serves as a path for the first signal amplified in the power amplifier. The second filter includes a first capacitor and attenuates the first signal amplified in the power amplifier. The first capacitor serves as a path for the second signal amplified in the power amplifier. The first signal outputted from the first filter is supplied to the first output path. The second signal outputted from the second filter is supplied to the second output path.
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公开(公告)号：US11611361B2
公开(公告)日：2023-03-21
申请号：US17032345
申请日：2020-09-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazunari Kawahata , Ryuken Mizunuma , Hideki Ueda , Satoshi Tanaka , Masashi Omuro , Yasuhisa Yamamoto
Abstract: A feed line connects an RFIC and a radiating element. A baseband ground plane (BB ground) is connected to a ground terminal of a BBIC. A radio frequency ground plane (RF ground) is placed in such a manner as to overlap the BB ground. The RF ground serves as a return path of the feed line. A first inter-ground connection circuit connects the BB ground and the RF ground. Furthermore, a second inter-ground connection circuit connects the BB ground and the RF ground. Connecting parts between these grounds and the second inter-ground connection circuit are arranged closer to the edges of these grounds than connecting parts between these grounds and the first inter-ground connection circuit. The connecting part between the ground and the second inter-ground connection circuit is placed on one side of a certain imaginary straight line that passes substantially the geometric center of the ground.
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公开(公告)号：US11271298B2
公开(公告)日：2022-03-08
申请号：US16704117
申请日：2019-12-05
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kaoru Sudo , Yasuhisa Yamamoto , Satoshi Tanaka
Abstract: A multi-antenna module includes, on or in the dielectric substrate, a first radiation element, a second radiation element that operates at a frequency band lower than that of the first radiation element, and a ground plane. A first feed line and a second feed line are provided on or in the dielectric substrate. A first switch element switches between a first state in which a signal is supplied to the second radiation element and a second state including at least one of a state in which the second radiation element is connected to the ground plane with terminal impedance interposed therebetween, a state in which the second radiation element is in a floating state with respect to the second feed line and the ground plane, and a state in which the second radiation element is short-circuited to the ground plane.
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Patent Agency Ranking
公开(公告)号：US11088663B2
公开(公告)日：2021-08-10
申请号：US16168977
申请日：2018-10-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shota Ishihara , Hiroshi Okabe , Yasuhisa Yamamoto
Abstract: A power amplifier circuit includes a power amplifier, first and second filters, and first and second output paths. The power amplifier is able to amplify both of a first signal and a second signal. The frequency of the second signal is higher than that of the first signal. The first filter includes a first inductor and attenuates the second signal amplified in the power amplifier. The first inductor serves as a path for the first signal amplified in the power amplifier. The second filter includes a first capacitor and attenuates the first signal amplified in the power amplifier. The first capacitor serves as a path for the second signal amplified in the power amplifier. The first signal outputted from the first filter is supplied to the first output path. The second signal outputted from the second filter is supplied to the second output path.
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公开(公告)号：US10707200B2
公开(公告)日：2020-07-07
申请号：US16219886
申请日：2018-12-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji Sasaki , Takayuki Tsutsui , Isao Obu , Yasuhisa Yamamoto
IPC: H01L27/02 , H03F3/213 , H01L23/00 , H01L29/423 , H01L29/08 , H01L29/10 , H01L29/417 , H03F1/52 , H03F3/195 , H01L29/861 , H01L29/06 , H01L29/737
Abstract: An amplifier circuit including a semiconductor element is formed on a substrate. A protection circuit formed on the substrate includes a plurality of protection diodes that are connected in series with each other, and the protection circuit is connected to an output terminal of the amplifier circuit. A pad conductive layer at least partially includes a pad for connecting to a circuit outside the substrate. The pad conductive layer and the protection circuit at least partially overlap each other in plan view.
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公开(公告)号：US20190229681A1
公开(公告)日：2019-07-25
申请号：US16371349
申请日：2019-04-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shota ISHIHARA , Yasuhisa Yamamoto
Abstract: A power amplifier module includes a power amplifier circuit and a control IC. The power amplifier circuit includes a bipolar transistor that amplifies power of an RF signal and outputs an amplified signal. The control IC includes an FET, which serves as a bias circuit that supplies a bias signal to the bipolar transistor. The FET is operable at a threshold voltage lower than that of the bipolar transistor, thereby making it possible to decrease the operating voltage of the power amplifier module.
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公开(公告)号：US10291182B2
公开(公告)日：2019-05-14
申请号：US15896701
申请日：2018-02-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shota Ishihara , Yasuhisa Yamamoto
Abstract: A power amplifier module includes a power amplifier circuit and a control IC. The power amplifier circuit includes a bipolar transistor that amplifies power of an RF signal and outputs an amplified signal. The control IC includes an FET, which serves as a bias circuit that supplies a bias signal to the bipolar transistor. The FET is operable at a threshold voltage lower than that of the bipolar transistor, thereby making it possible to decrease the operating voltage of the power amplifier module.
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公开(公告)号：US10192862B2
公开(公告)日：2019-01-29
申请号：US15902815
申请日：2018-02-22
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kenji Sasaki , Takayuki Tsutsui , Isao Obu , Yasuhisa Yamamoto
IPC: H01L27/02 , H03F3/213 , H01L23/00 , H01L29/423 , H01L29/08 , H01L29/10 , H01L29/417
Abstract: An amplifier circuit including a semiconductor element is formed on a substrate. A protection circuit formed on the substrate includes a plurality of protection diodes that are connected in series with each other, and the protection circuit is connected to an output terminal of the amplifier circuit. A pad conductive layer at least partially includes a pad for connecting to a circuit outside the substrate. The pad conductive layer and the protection circuit at least partially overlap each other in plan view.
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