Patents by Inventor Hirotsugu Mori
Hirotsugu Mori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240146248Abstract: A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.Type: ApplicationFiled: January 9, 2024Publication date: May 2, 2024Inventors: Tomohiro SANO, Hirotsugu MORI
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Patent number: 11967978Abstract: A radio-frequency circuit is used in simultaneous transfer of a radio-frequency signal of 4G and a radio-frequency signal of 5G, and includes a first transfer circuit that selectively receives the 4G radio-frequency signal or the 5G radio-frequency signal, and transfers a radio-frequency signal of a first communication band including a first transmission band and a first reception band and a radio-frequency signal of a second communication band including a second transmission band and a second reception band. The first and second transmission bands at least partially overlap. The first transfer circuit includes a first power amplifier that amplifies transmission signals of the first and second communication bands, and a first transmission filter that has a first passband including the first and second transmission bands, and passes the transmission signals of the first and second communication bands output from the first power amplifier.Type: GrantFiled: February 22, 2023Date of Patent: April 23, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Atsushi Ono, Satoshi Tanaka, Hirotsugu Mori
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Patent number: 11956069Abstract: A multiplexer (1) used in a communication device (5) includes an antenna (21) for a first frequency band group including 5GNR and an antenna (22) for a second frequency band group and includes a filter (12) for a first communication band and a filter (13) for a second communication band. The second frequency band group is higher than the first communication band, the second communication band is lower than the first communication band, the filter (12) includes a resonant circuit (31), an inductor (L1) connected to a node (n1) in a series arm path, and an inductor (L2) magnetically coupled with the inductor (L1).Type: GrantFiled: April 28, 2021Date of Patent: April 9, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Hirotsugu Mori
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Publication number: 20240113433Abstract: An antenna module including a dielectric substrate having a long side and a short side, a ground electrode, a radiating element, a peripheral electrode, and a parasitic element. The radiating element is disposed to face the ground electrode. The peripheral electrode is disposed along the long side of the dielectric substrate and is electrically connected to the ground electrode. The parasitic element is disposed along the short side of the dielectric substrate and is disposed away from the radiating element. The radiating element is configured to emit radio waves in two polarization directions along the long side and the short side of the dielectric substrate. The shortest distance between the radiating element and the parasitic element is greater than the shortest distance between the radiating element and the peripheral electrode.Type: ApplicationFiled: December 14, 2023Publication date: April 4, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Kengo ONAKA, Ryo KOMURA, Hirotsugu MORI
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Publication number: 20240106465Abstract: A first receiving band and a first transmission band in band A and a second transmission band and a second receiving band in band B are listed in frequency order. A radio frequency module includes: first and second boards; a first filter having a passband that is the first transmission band; second and sixth filters each having a passband that is the first receiving band; third and fifth filters each having a passband that is the second receiving band; a first power amplifier connected to the first filter; a fourth filter having a passband that is the second transmission band; and a second power amplifier connected to the fourth filter. The first to third filters and the first power amplifier are disposed on the first board, and the fourth to sixth filters and the second power amplifier are disposed on the second board.Type: ApplicationFiled: December 6, 2023Publication date: March 28, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Atsushi ONO, Hirotsugu MORI, Yoshiki YAGURA, Kiwamu SAKANO, Akira NOGUCHI
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Publication number: 20240088848Abstract: A radio frequency circuit includes: an amplifier circuit configured to amplify a first radio frequency signal using a first power supply voltage, and amplify a second radio frequency signal using a second power supply voltage. The first radio frequency signal is a signal in a first band for Long Term Evolution (LTE), the second radio frequency signal is a signal in a second band for 5th Generation New Radio (5G NR) or a wireless local area network (WLAN) signal, and in a state in which a first predetermined condition regarding the first radio frequency signal and the second radio frequency signal is satisfied, a value of the second power supply voltage is greater than a value of the first power supply voltage.Type: ApplicationFiled: November 9, 2023Publication date: March 14, 2024Inventors: Hiroshi KOJIMA, Reiji NAKAJIMA, Hirotsugu MORI
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Patent number: 11929557Abstract: An antenna module radiates radio waves upon receiving a radio-frequency signal output from an RFIC. The antenna module includes flat radiating elements that radiate radio waves in a first polarization direction, feed conductors that each supply a radio-frequency signal from the RFIC to an associated one of the radiating elements, and a ground electrode disposed opposite the radiating elements. As viewed from the RFIC, frequency characteristics of an impedance of the radiating element are different from frequency characteristics of an impedance of the radiating element. Under a condition a frequency band in which a return loss is less than or equal to a predetermined value is defined as an operable band width in each of the radiating elements, the operable band width of the radiating element partially overlaps the operable band width of the radiating element.Type: GrantFiled: June 23, 2022Date of Patent: March 12, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keisei Takayama, Hirotsugu Mori
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Patent number: 11909360Abstract: A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.Type: GrantFiled: August 18, 2022Date of Patent: February 20, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Tomohiro Sano, Hirotsugu Mori
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Patent number: 11901879Abstract: A multiplexer (1) includes: a filter (13L) that is arranged between a common terminal (100) and an input/output terminal (130) and that has a first pass band; a filter (12H) that is arranged between the common terminal (100) and an input/output terminal (120), that is formed of at least one acoustic wave resonator, and that has a second pass band located at a higher frequency than the first pass band; and a capacitor (C2) that is serially arranged on a connection path between the common terminal (100) and the filter (12H). When the filter (12H) is regarded as a capacitance, the Q value of the capacitor (C2) in the first pass band is higher than the Q value of the capacitance in the first pass band.Type: GrantFiled: December 10, 2020Date of Patent: February 13, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Hirotsugu Mori, Masakazu Tani
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Publication number: 20240047881Abstract: An antenna module includes first and second dielectric substrates having different normal directions, and first and second radiating elements. The first radiating elements are disposed in the X-axis direction at the first dielectric substrate. The second radiating elements are disposed in the X-axis direction at the second dielectric substrate. The first radiating elements disposed in the X-axis direction are more than the second radiating elements disposed in the X-axis direction. The measurement perpendicular to the X-axis direction of the second dielectric substrate is shorter than the measurement perpendicular to the X-axis direction of the first dielectric substrate. The distance from a second radiating element closest to an end portion in the X-axis direction of the second dielectric substrate to the end portion is longer than the distance from a first radiating element closest to an end portion in the X-axis direction of the first dielectric substrate to the end portion.Type: ApplicationFiled: October 17, 2023Publication date: February 8, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Tadashi SUGAHARA, Yoshiki YAMADA, Hirotsugu MORI
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Patent number: 11888245Abstract: A flexible substrate includes a dielectric having flexibility, a first line, a second line, and ground electrode. The dielectric has a first surface and a second surface opposed to the first surface. The first line, the ground electrode, and the second line are laminated in this order in layers from the first surface to the second surface. When the flexible substrate is seen through from the thickness direction of the flexible substrate, the first line has a line-symmetrical portion that is line-symmetrical with respect to the second line with a virtual intermediate line (LM) serving as a symmetric line.Type: GrantFiled: December 23, 2021Date of Patent: January 30, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keisei Takayama, Hirotsugu Mori, Yoshiki Yamada
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Patent number: 11881640Abstract: An antenna element includes a dielectric substrate, a first ground electrode, a second ground electrode, a via conductor, and a radiation electrode. The dielectric substrate includes a first portion shaped like a flat plate and a second portion thinner than the first portion. The first ground electrode is arranged in the first portion. The second ground electrode is arranged in the second portion. The via conductor couples the first ground electrode and the second ground electrode. A distance between the radiation electrode and the first ground electrode in a first thickness direction is more than a distance between the radiation electrode and the second ground electrode in a second thickness direction. Part of the radiation electrode lies opposite to the first ground electrode without lying opposite to the second ground electrode.Type: GrantFiled: February 8, 2021Date of Patent: January 23, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Kaoru Sudo, Hirotsugu Mori, Kengo Onaka
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Publication number: 20240022280Abstract: A radio frequency circuit includes: a divider circuit configured to divide a radio frequency signal input through a first terminal, and output radio frequency signals resulting from the dividing, respectively through a second terminal and a third terminal; a combiner circuit configured to combine a radio frequency signal input through a fourth terminal and a radio frequency signal input through a fifth terminal, and output a radio frequency signal resulting from the combining, through a sixth terminal; a first amplifier disposed on a first path connecting the second terminal and the fourth terminal; a second amplifier disposed on a second path connecting the third terminal and the fifth terminal; and a first switch connected between the third terminal and an input terminal of the second amplifier, the first switch being switched between a conducting state and a non-conducting state according to a power class.Type: ApplicationFiled: June 14, 2023Publication date: January 18, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Satoshi TANAKA, Atsushi ONO, Hirotsugu MORI
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Publication number: 20240014845Abstract: A radio-frequency circuit includes a first power amplifier, first and second filters, an attenuation circuit, and a switch. The first power amplifier supports a first power class which allows for maximum output power higher than power class 3. The first filter has a pass band including a first band and is connected between the first power amplifier and an antenna connecting terminal. The second filter has a pass band including a second band and is connected to the antenna connecting terminal. The radio-frequency circuit can perform simultaneous communication of the first band and the second band. The attenuation circuit and the switch are connected in series with each other between a ground and a transmit path connecting the first power amplifier and the antenna connecting terminal.Type: ApplicationFiled: September 20, 2023Publication date: January 11, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Shinya HITOMI, Hirotsugu MORI
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Publication number: 20240014842Abstract: A radio frequency circuit includes: a plurality of input terminals including a first input terminal through which a first Wireless Local Area Network (WLAN) transmission signal is received and a second input terminal through which a 5th Generation New Radio (5G NR) transmission signal is received; a power amplifier; a first switch connected to an input side of the power amplifier and switches a connection of the power amplifier between the plurality of input terminals; and a variable phase circuit connected to an output side of the power amplifier and changes the impedance matching between the power amplifier and the load in accordance with a connection status of the first switch.Type: ApplicationFiled: September 22, 2023Publication date: January 11, 2024Inventors: Atsushi ONO, Hirotsugu MORI
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Patent number: 11856529Abstract: A communication circuit includes a first transfer circuit that includes a first transmitter circuit, and a second transfer circuit that includes a second transmitter circuit that can transmit a signal simultaneously with the first transmitter circuit. The second transmitter circuit is configured to be placed in a transmission halt state when transmission power of the second transmitter circuit resulting from being decreased by a predetermined value is lower than or equal to a threshold.Type: GrantFiled: August 10, 2022Date of Patent: December 26, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Shinya Hitomi, Hidenori Obiya, Hirotsugu Mori
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Patent number: 11855594Abstract: A radio frequency circuit includes: an amplifier circuit configured to amplify a first radio frequency signal using a first power supply voltage, and amplify a second radio frequency signal using a second power supply voltage. The first radio frequency signal is a signal in a first band for Long Term Evolution (LTE), the second radio frequency signal is a signal in a second band for 5th Generation New Radio (5G NR) or a wireless local area network (WLAN) signal, and in a state in which a first predetermined condition regarding the first radio frequency signal and the second radio frequency signal is satisfied, a value of the second power supply voltage is greater than a value of the first power supply voltage.Type: GrantFiled: January 20, 2021Date of Patent: December 26, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Hiroshi Kojima, Reiji Nakajima, Hirotsugu Mori
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Patent number: 11811371Abstract: A radio-frequency circuit includes a power amplifying circuit configured to amplify a first radio-frequency signal having a first channel bandwidth and a second radio-frequency signal having a second channel bandwidth greater than the first channel bandwidth. The power amplifying circuit is configured to amplify the first radio-frequency signal in an amplifying mode according to an average power tracking method, and to amplify the second radio-frequency signal in an amplifying mode according to an envelope tracking method.Type: GrantFiled: June 23, 2020Date of Patent: November 7, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Shinya Hitomi, Hidenori Obiya, Hirotsugu Mori
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Publication number: 20230353170Abstract: A radio frequency circuit includes: a first filter connected to an antenna connection terminal and having a passband including a first band; a second filter connected to the antenna connection terminal and having a passband including a second band; and an active circuit connected to the first filter. The active circuit includes: a low noise amplifier; a first capacitor disposed on a feedback path of the low noise amplifier; and at least one of a first inductor or a first resistor, disposed on the feedback path. A signal of the first band and a signal of the second band are simultaneously transferable.Type: ApplicationFiled: July 10, 2023Publication date: November 2, 2023Applicant: Murata Manufacturing Co., Ltd.Inventors: Hirotsugu MORI, Hidenori OBIYA, Tomohiro SANO
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Patent number: 11804868Abstract: A radio frequency circuit includes: a plurality of input terminals including a first input terminal through which a first Wireless Local Area Network (WLAN) transmission signal is received and a second input terminal through which a 5th Generation New Radio (5G NR) transmission signal is received; a power amplifier; a first switch connected to an input side of the power amplifier and switches a connection of the power amplifier between the plurality of input terminals; and a variable phase circuit connected to an output side of the power amplifier and changes the impedance matching between the power amplifier and the load in accordance with a connection status of the first switch.Type: GrantFiled: March 18, 2021Date of Patent: October 31, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Atsushi Ono, Hirotsugu Mori