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公开(公告)号：US20220163623A1
公开(公告)日：2022-05-26
申请号：US17439682
申请日：2020-02-14
Inventor： Takaaki KISHIGAMI , Kenta IWASA , Hidekuni YOMO
IPC: G01S7/03 , H01Q21/06 , H04B7/0413 , G01S13/44
Abstract: Each of the plurality of transmission antenna groups includes a plurality of transmission antennas that are disposed at second intervals in a first direction, and are disposed at fourth intervals each of which is an interval of an integral multiple of a third interval in a second direction. Each of the plurality of reception antenna groups includes a plurality of reception antennas that are disposed at fifth intervals in the first direction, and are disposed at sixth intervals each of which is an interval of an integral multiple of the third interval in the second direction. The difference between the second interval and the fifth interval is the first interval, and the difference between the fourth interval and the sixth interval is the third interval.
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公开(公告)号：US20240192349A1
公开(公告)日：2024-06-13
申请号：US18581876
申请日：2024-02-20
Inventor： Takaaki KISHIGAMI , Ryosuke SHIOZAKI , Hidekuni YOMO , Kenta IWASA
CPC classification number: G01S13/343 , G01S7/4026 , G01S7/403 , G01S7/4034 , G01S2013/0245
Abstract: A radar device includes: a control circuit which, in operation, selects at least one of a plurality of transmission antennas in each of determined transmission periods; and a plurality of transmission circuits which, in operation, transmit at least one transmission signal in every transmission period using the selected at least one of the plurality of transmission antennas. The control circuit, in operation, selects a first transmission antenna of the plurality of transmission antennas once in the determined transmission periods, and selects remaining second transmission antennas of the plurality of transmission antennas a plurality of times in the determined transmission periods.
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公开(公告)号：US20230204746A1
公开(公告)日：2023-06-29
申请号：US18179255
申请日：2023-03-06
Inventor： Kenta IWASA , Hidekuni YOMO
IPC: G01S13/00 , G01S7/03 , G01S7/282 , G01S7/285 , G01S13/42 , H01Q1/32 , H01Q21/06 , H01Q21/29 , G01S13/87 , H01Q3/26
CPC classification number: G01S13/003 , G01S7/032 , G01S7/282 , G01S7/285 , G01S13/42 , H01Q1/3233 , H01Q21/061 , H01Q21/293 , G01S13/878 , H01Q3/2605 , G01S7/03 , G01S13/931
Abstract: One of a transmitting array antenna and a receiving array antenna includes a first antenna group and a second antenna group. The first antenna group includes one or more first antenna elements of which the phase centers of the antenna elements are laid out at each first layout spacing following a first axis direction, and a shared antenna element. The second antenna group includes a plurality of second antenna elements and the one shared antenna element, and the phase centers of the antenna elements are laid out in two columns at each second layout spacing following a second axis direction that is different from the first axis direction. The phase centers of the antenna elements included in each of the two columns differ from each other regarding position in the second axis direction.
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公开(公告)号：US20220003835A1
公开(公告)日：2022-01-06
申请号：US17479374
申请日：2021-09-20
Inventor： Kenta IWASA , Hidekuni YOMO , Tomohiro YUI
Abstract: Provided is a radar apparatus including: an estimation circuit; and a processing circuit. The estimation circuit outputs a plurality of pieces of data each including information in which a distance to a target and a direction to the target are estimated based on a reception signal including a reflected wave that is a radar signal reflected by the target. The processing circuit determines a range side lobe component in the target based on the estimated distance and the estimated direction of one or more pieces of data selected from the plurality of pieces of data.
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公开(公告)号：US20150341192A1
公开(公告)日：2015-11-26
申请号：US14813753
申请日：2015-07-30
Inventor： Hidekuni YOMO , Akihiko MATSUOKA , Atsushi MARUYAMA
CPC classification number: H04L25/03159 , G06F17/142 , H04L25/03057 , H04L27/01 , H04L2025/03414 , H04L2025/03541
Abstract: An adaptive equalizer (100) has a signal converter (200) for performing a fast Fourier transform and/or an inverse fast Fourier transform. The signal converter (200) has: a first wide-bit memory (201) capable of reading/writing a plurality of sample signals; a first register group (202) comprising a plurality of registers capable of accessing the first wide-bit memory (201); a butterfly computation unit group (204) comprising a plurality of butterfly computation units; and a first connection switching unit (203) for switching the state of connection between the plurality of registers and the plurality of butterfly computation units.
Abstract translation: 自适应均衡器（100）具有用于执行快速傅里叶变换和/或快速傅立叶逆变换的信号转换器（200）。 信号转换器（200）具有：能够读取/写入多个采样信号的第一宽带存储器（201） 第一寄存器组（202），包括能够访问第一宽位存储器（201）的多个寄存器; 蝴蝶计算单元组（204），包括多个蝶形计算单元; 以及用于切换多个寄存器与多个蝶形运算单元之间的连接状态的第一连接切换单元（203）。
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Patent Agency Ranking
公开(公告)号：US20240036184A1
公开(公告)日：2024-02-01
申请号：US18481854
申请日：2023-10-05
Inventor： Kenta IWASA , Hidekuni YOMO
IPC: G01S13/00 , G01S7/03 , G01S7/282 , G01S7/285 , G01S13/42 , H01Q1/32 , H01Q21/06 , H01Q21/29 , G01S13/87 , H01Q3/26
CPC classification number: G01S13/003 , G01S7/032 , G01S7/282 , G01S7/285 , G01S13/42 , H01Q1/3233 , H01Q21/061 , H01Q21/293 , G01S13/878 , H01Q3/2605 , G01S7/03 , G01S13/931
Abstract: One of a transmitting array antenna and a receiving array antenna includes a first antenna group and a second antenna group. The first antenna group includes one or more first antenna elements of which the phase centers of the antenna elements are laid out at each first layout spacing following a first axis direction, and a shared antenna element. The second antenna group includes a plurality of second antenna elements and the one shared antenna element, and the phase centers of the antenna elements are laid out in two columns at each second layout spacing following a second axis direction that is different from the first axis direction. The phase centers of the antenna elements included in each of the two columns differ from each other regarding position in the second axis direction.
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公开(公告)号：US20230393268A1
公开(公告)日：2023-12-07
申请号：US18230885
申请日：2023-08-07
Inventor： Takaaki KISHIGAMI , Kenta IWASA , Hidekuni YOMO
IPC: G01S13/931 , G01S7/03 , G01S13/534
CPC classification number: G01S13/931 , G01S7/036 , G01S13/534 , G01S7/023
Abstract: A radar apparatus includes a plurality of transmit antennas that transmits a plurality of transmission signals using a multiplexing transmission, and a transmission circuit that applies phase rotation amounts corresponding to combinations of Doppler shift amounts and code sequences to the plurality of transmission signals. Each of the plurality of transmission signals is assigned a different combination among the combinations. The combinations include at least two combinations of a same number of multiplexing by the code sequences.
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公开(公告)号：US20230147240A1
公开(公告)日：2023-05-11
申请号：US17887053
申请日：2022-08-12
Inventor： Kenta IWASA , Hidekuni YOMO
CPC classification number: G01S7/4026 , G01S7/2813 , G01S7/4008 , G01S13/0218 , G01S7/4013 , G01S2013/0245
Abstract: A radar apparatus includes a radar transmission circuit that transmits a radar signal from a transmission array antenna, and a radar reception circuit that receives, from a reception array antenna, a reflected wave signal that is the radar signal reflected at a target. One of the transmission array antenna and the reception array antenna includes a first antenna element group having m antenna elements arranged at a first interval Dt along a first axis direction, wherein m is an integer of 2 or larger. The other one of the transmission array antenna and the reception array antenna includes a second antenna element group having n antenna elements arranged at a second interval Dr along the first axis direction, wherein n is an integer of 4 or larger. The second interval Dr includes several different intervals.
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公开(公告)号：US20220003834A1
公开(公告)日：2022-01-06
申请号：US17476098
申请日：2021-09-15
Inventor： Kenta IWASA , Takaaki KISHIGAMI , Hidekuni YOMO
Abstract: This receiving array antenna includes multiple receiving antenna rows, and each of the receiving antenna rows contains a first number of antennas; of the first number of antennas contained in the receiving antenna rows, mutually adjacent antennas are arranged separated by a first interval in a first axis direction and by a second interval in a second axis direction. The transmitting array antenna includes multiple transmitting antenna rows arranged in the second axis direction at an interval that is the first number times the second interval, each of the transmitting antenna rows contains multiple antennas, and the multiple antennas contained in the transmitting antenna rows are arranged in the same position in the second axis direction and in different positions in the first axis direction. The antennas contained in the transmitting antenna rows adjacent in the second axis direction are arranged in different positions in the first axis direction.
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公开(公告)号：US20230008565A1
公开(公告)日：2023-01-12
申请号：US17952824
申请日：2022-09-26
Inventor： Takaaki KISHIGAMI , Ryosuke SHIOZAKI , Hidekuni YOMO , Kenta IWASA
Abstract: A radar device includes radar transmission and receiving circuits. The radar transmission circuit transmits one or more transmission signals, each having a transmission period Tr. The radar receiving circuit receives one or more reflected signals in which the transmission signals are reflected by an object and estimates a direction of the object based on the reflected signals. The radar transmission circuit includes Nt transmission antennas. A control circuit sets a transmission gap period between a first and second periods, with the transmission gap period being a period during which the transmission signals are not transmitted. The first period is equal to an integral multiple of a period Np, the period Np is equal to or more than Nt times the transmission period Tr, and the second period is set after the first period and is equal to an integral multiple of the period Np.
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