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1.发明授权公开(公告)号：US12238861B2
公开(公告)日：2025-02-25
申请号：US18688376
申请日：2022-09-14
Applicant: Mitsubishi Electric Corporation
Inventor： Tatsuya Sakamoto , Kenjiro Takanishi , Hitoshi Arai , Hiroshi Goto , Akihito Hirai
Abstract: A composite printed wiring board includes a first printed wiring board, a second printed wiring board, an intermediate plate, a first bonding layer, and a second bonding layer. The intermediate plate is provided to surround a space. The first printed wiring board closes one side of the space and is bonded to the intermediate plate. The second printed wiring board closes the other side of the space and is bonded to the intermediate plate. At least any of the first printed wiring board and the second printed wiring board has a through hole. A cavity is provided that is the space surrounded by the first printed wiring board, the second printed wiring board, the intermediate plate, the first bonding layer, and the second bonding layer. The through hole in communication with the cavity.
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公开(公告)号：US11870447B2
公开(公告)日：2024-01-09
申请号：US17503966
申请日：2021-10-18
Applicant: Mitsubishi Electric Corporation
Inventor： Sho Ikeda , Akihito Hirai , Koji Tsutsumi , Masaomi Tsuru
CPC classification number: H03L7/0814 , G06F7/501 , H03L7/093 , H03L7/097 , H03L7/0998
Abstract: A third signal having a phase intermediate between a first signal based on a reference signal and a second signal with a phase shifted by an element of a previous stage is generated, a signal obtained by shifting the phase of the third signal by a first phase shill amount is output as a second signal to an element of a subsequent stage, a phase difference between the third signal and a fourth signal obtained by shifting the phase of a first signal output from the element of the subsequent stage by the first phase shift amount is detected, and the first phase shift amount is controlled on the basis of the detected phase difference.
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公开(公告)号：US11297695B2
公开(公告)日：2022-04-05
申请号：US17038510
申请日：2020-09-30
Applicant: Mitsubishi Electric Corporation
Inventor： Akihito Hirai , Eigo Kuwata , Osamu Wada , Kazuhiro Iyomasa
Abstract: A dielectric heating device is provided with two or more electrodes, a grounded surface connected to a first electrode, a signal source connected to a second electrode to output a high-frequency signal, a first element interposed serially between the signal source and second electrode, and a second element interposed serially between the grounded surface and first electrode. The first element includes two terminals that electrically connect the signal source and second electrode in a non-contact manner, to cause the high-frequency signal outputted from the signal source to pass through the first element, by using the electric coupling between the two terminals. The second element includes two terminals that electrically connect the grounded surface and first electrode in a non-contact manner, to output, by using the electric coupling between the two terminals, the high-frequency signal outputted from the signal source, to the grounded surface.
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公开(公告)号：US11088698B2
公开(公告)日：2021-08-10
申请号：US17107382
申请日：2020-11-30
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Sho Ikeda , Akihito Hirai , Koji Tsutsumi , Mitsuhiro Shimozawa
Abstract: A phase-locked loop circuit includes: a division ratio control circuit controlling a division ratio of an output signal of a variable frequency divider on the basis of an addition signal of a negative feedback signal and a division ratio setting signal indicating the division ratio, in synchronization with a divided signal output from the variable frequency divider; a first phase detection circuit calculating a first phase detection signal indicating a phase of an output signal of a signal output circuit; a second phase detection circuit calculating a second phase detection signal indicating a phase of the output signal of a case where it is assumed that the division ratio control circuit controls the division ratio of the output signal of the variable frequency divider in synchronization with the reference signal; and a shift circuit generating a negative feedback signal from a difference between the first phase detection signal and the second phase detection signal, and outputting an addition signal of the generated negative feedback signal and the division ratio setting signal to the division ratio control circuit.
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公开(公告)号：US11463047B2
公开(公告)日：2022-10-04
申请号：US17466669
申请日：2021-09-03
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Shinya Yokomizo , Takanobu Fujiwara , Masaomi Tsuru , Mitsuhiro Shimozawa , Akihito Hirai
Abstract: A mixer includes a first unit mixer, a second unit mixer, a third unit mixer, and a fourth unit mixer that have the same configuration and a first combiner, a second combiner, and a third combiner that have the same configuration. The first to the fourth unit mixers each include a differential RF signal terminal. Output of the first unit mixer and output of the second unit mixer are combined by the second combiner. Output of the third unit mixer and output of the fourth unit mixer are combined by the third combiner. Output of the second combiner and output of the third combiner are combined by the first combiner. The output of the third unit mixer is input to the third combiner with the polarity being determined.
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Patent Agency Ranking
公开(公告)号：US10910997B2
公开(公告)日：2021-02-02
申请号：US16639933
申请日：2017-09-19
Applicant: Mitsubishi Electric Corporation
Inventor： Akihito Hirai , Mitsuhiro Shimozawa
Abstract: A local oscillator of the present invention includes: a frequency generator for outputting first and second sinusoidal signals having the same frequency but mutually different phases; a phase detector for outputting either a positive or a negative voltage depending on whether a phase difference between the first and second sinusoidal signals output from the frequency generator is greater than a reference phase difference; and a comparator for outputting a comparison result between a voltage output from the phase detector and a reference voltage, or a comparison result between the voltage output from the phase detector and a voltage obtained by inverting the polarity of the voltage, in which the frequency generator controls the phase of the first sinusoidal signal so that the phase difference approaches the reference phase difference by using the comparison result output from the comparator, enabling generating IQ signals having higher phase accuracy than conventional local oscillators.
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公开(公告)号：US10854557B2
公开(公告)日：2020-12-01
申请号：US15742071
申请日：2016-05-19
Applicant: AOI Electronics Co., Ltd. , Mitsubishi Electric Corporation
Inventor： Shuichi Sawamoto , Koji Iwabu , Katsuhiro Takao , Akihito Hirai , Joichi Saito
IPC: H01L21/56 , H01L23/552 , H01L23/31 , H01L23/00 , H01L21/48 , H01L23/495
Abstract: A semiconductor device includes: an island that is formed by a metallic layer including a single metallic layer or a plurality of different metallic layers; a semiconductor chip provided upon an upper surface of the island, and having a pair of side portions mutually opposing each other; a plurality of signal terminals disposed at an external periphery of at least the pair of side portions of the semiconductor chip, and formed by the metallic layer; a grounding terminal disposed at an external periphery of the plurality of signal terminals, and formed by the metallic layer; electrically conductive connection members that are connected between each of a plurality of electrodes of the semiconductor chip and each of the plurality of signal terminals; sealing resin that seals the island, the semiconductor chip, the electrically conductive connection members, the plurality of signal terminals, and the grounding terminal, so that a lower surface of the island, lower surfaces of the plurality of signal terminals, and a lower surface of the grounding terminal are exposed to the exterior; and a metallic shielding layer that covers over an outer peripheral side surface and an supper surface of the sealing resin, and a portion of the grounding terminal.
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公开(公告)号：US12199360B2
公开(公告)日：2025-01-14
申请号：US18124867
申请日：2023-03-22
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Shunichi Ikeda , Kei Yokokawa , Narihiro Nakamoto , Akihito Hirai , Toru Fukasawa , Masataka Otsuka
Abstract: An antenna device includes: a patch conductor provided on a substrate; a GND conductor provided in the substrate in such a manner as to face the patch conductor; GND pins that are provided in the substrate and that connect the patch conductor and the GND conductor; and an RF circuit provided on a first face of the patch conductor opposite to a second face of the patch conductor, the second face being attached to the substrate, the RF circuit being provided in such a manner as to be surrounded by the GND pins.
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公开(公告)号：US10944360B2
公开(公告)日：2021-03-09
申请号：US16639933
申请日：2017-09-19
Applicant: Mitsubishi Electric Corporation
Inventor： Akihito Hirai , Mitsuhiro Shimozawa
Abstract: A local oscillator of the present invention includes: a frequency generator for outputting first and second sinusoidal signals having the same frequency but mutually different phases; a phase detector for outputting either a positive or a negative voltage depending on whether a phase difference between the first and second sinusoidal signals output from the frequency generator is greater than a reference phase difference; and a comparator for outputting a comparison result between a voltage output from the phase detector and a reference voltage, or a comparison result between the voltage output from the phase detector and a voltage obtained by inverting the polarity of the voltage, in which the frequency generator controls the phase of the first sinusoidal signal so that the phase difference approaches the reference phase difference by using the comparison result output from the comparator, enabling generating IQ signals having higher phase accuracy than conventional local oscillators.
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公开(公告)号：US10763826B2
公开(公告)日：2020-09-01
申请号：US16479894
申请日：2017-03-02
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Akihito Hirai , Mitsuhiro Shimozawa
Abstract: A first transistor (2a), a second transistor (2b), a third transistor (2c) and a fourth transistor (2d) are provided. A first transistor (2a) amplifies a first I signal VIP inputted from a first input terminal (1a). A second transistor (2b) amplifies a first Q signal VQP inputted from a second input terminal (1b). A third transistor (2c) amplifies a second I signal VIN when the second I signal VIN is inputted from a third input terminal (1c), the second I signal VIN forming a differential signal with the first I signal VIP. A fourth transistor (2d) amplifies a second Q signal VQN when the second Q signal VQN is inputted from a fourth input terminal (1d), the second Q signal VQN forming a differential signal with the first Q signal VQP.
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