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公开(公告)号：US20220071007A1
公开(公告)日：2022-03-03
申请号：US17465130
申请日：2021-09-02
发明人： Naofumi TAKEZONO
摘要： An electronic component includes a main body portion that has a first main surface having first and second sides, a second main surface opposite to the first main surface, a first side surface sharing the first side with the first main surface, and a second side surface sharing the second side with the first main surface, connection terminals that have electrical conductivity and that are arranged on the first main surface so as to be isolated from each other, and side-surface terminals that have electrical conductivity. The main body portion has side-surface grooves that are formed in the first and second side surfaces and that extend from the first main surface toward the second main surface. The side-surface terminals are provided on inner sides of the side-surface grooves and are each electrically connected to at least one of two end portions of the corresponding connection terminal.
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公开(公告)号：US20240333222A1
公开(公告)日：2024-10-03
申请号：US18616230
申请日：2024-03-26
发明人： Naofumi TAKEZONO
CPC分类号： H03F1/0233 , H03F3/04 , H03K17/56 , H03F2200/105
摘要： A high frequency module includes: a first capacitor C1 having a first end connected to a first signal line; a second capacitor having a first end is connected to a second signal line; a first switch provided between a second end of the first capacitor and a reference potential; a second switch provided between a second end of the second capacitor and the reference potential; an inspection terminal allowing inspection of both the first switch and the second switch; and a resistor connected between a connection point between the first capacitor and the first switch.
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公开(公告)号：US20220149883A1
公开(公告)日：2022-05-12
申请号：US17453904
申请日：2021-11-08
发明人： Naofumi TAKEZONO
摘要： An RF signal transmitting/receiving circuit includes: at least one power amplifier circuit that amplifies and outputs an RF transmission signal; duplexers each including a transmission filter that passes the RF transmission signal amplified by the power amplifier circuit, and a reception filter that passes an RF reception signal; at least one distribution circuit that divides the RF transmission signal input to the power amplifier circuit and outputs a first signal; a signal output circuit that outputs, based on the first signal, in at least one transmission path among transmission paths of a plurality of the RF reception signals, at least one second signal that has substantially a same delay amount, an inverted phase, and substantially same power as the RF transmission signal mixed in the RF reception signal; and coupling circuits that couple the second signal to the RF reception signal transmitted in the at least one transmission path.
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公开(公告)号：US20240235491A9
公开(公告)日：2024-07-11
申请号：US18403741
申请日：2024-01-04
发明人： Naofumi TAKEZONO , Shunji YOSHIMI
CPC分类号： H03F1/26 , H03F3/245 , H03F2200/294 , H03F2200/451
摘要： A power amplifier circuit includes a first amplifier, a second amplifier, a third amplifier, and a harmonic suppression circuit. The first amplifier operates on power supplied through a first supply line, and amplifies a first transmit signal in a first frequency band. The second amplifier operates on power supplied through a second supply line connected to the first supply line, and amplifies a second transmit signal in a second frequency band different from the first frequency band. The third amplifier shares an antenna with the second amplifier, and amplifies a receive signal in the second frequency band received from the antenna. The harmonic suppression circuit generates, based on a harmonic of the first transmit signal, a suppression signal to suppress the harmonic to be transferred to the first supply line, and outputs the suppression signal to the first supply line or the second supply line.
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公开(公告)号：US20240136981A1
公开(公告)日：2024-04-25
申请号：US18403741
申请日：2024-01-04
发明人： Naofumi TAKEZONO , Shunji YOSHIMI
CPC分类号： H03F1/26 , H03F3/245 , H03F2200/294 , H03F2200/451
摘要： A power amplifier circuit includes a first amplifier, a second amplifier, a third amplifier, and a harmonic suppression circuit. The first amplifier operates on power supplied through a first supply line, and amplifies a first transmit signal in a first frequency band. The second amplifier operates on power supplied through a second supply line connected to the first supply line, and amplifies a second transmit signal in a second frequency band different from the first frequency band. The third amplifier shares an antenna with the second amplifier, and amplifies a receive signal in the second frequency band received from the antenna. The harmonic suppression circuit generates, based on a harmonic of the first transmit signal, a suppression signal to suppress the harmonic to be transferred to the first supply line, and outputs the suppression signal to the first supply line or the second supply line.
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公开(公告)号：US20230013008A1
公开(公告)日：2023-01-19
申请号：US17812215
申请日：2022-07-13
发明人： Naofumi TAKEZONO
摘要： A power amplifier circuit includes: an amplifier that amplifies an input signal; and a resonant circuit that is connected to an output terminal of the amplifier and that attenuates a harmonic wave of an amplified signal obtained by amplifying the input signal. The resonant circuit includes an inductor disposed between the amplifier and a ground, a capacitive element disposed between the amplifier and the ground and connected in series to the inductor, an inductor connected in parallel to the inductor, a switch connected in series to the inductor, and a switch that is connected in parallel to the switch and that is of an element size common to an element size of the switch.
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公开(公告)号：US20220311394A1
公开(公告)日：2022-09-29
申请号：US17656284
申请日：2022-03-24
发明人： Naofumi TAKEZONO , Masashi MARUYAMA
IPC分类号： H03F3/24
摘要： A power amplifier circuit includes an amplifier transistor that amplifies a radio-frequency signal and outputs the radio-frequency signal, and a bias circuit that supplies a bias current to a base of the amplifier transistor. The bias circuit includes a bias current supply transistor, and an electrostatic capacity circuit whose electrostatic capacity varies in accordance with a temperature of the amplifier transistor and that is charged in a non-supply period during which the bias current is not supplied and discharges to a supply path for the bias current in a supply period during which the bias current is supplied. The supply period during which the bias current is supplied includes an amplification period during which the radio-frequency signal is amplified by the amplifier transistor. The bias current starts to be supplied before the amplifier transistor starts amplification.
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