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公开(公告)号：US20230019268A1
公开(公告)日：2023-01-19
申请号：US17944860
申请日：2022-09-14
Applicant: AGC Inc.
Inventor： Toshiki SAYAMA , Hideaki SHOJI , Yusuke KATO , Shoichi TAKEUCHI
Abstract: An antenna system for vehicles includes a first antenna attached in a vicinity of a windshield of a vehicle; and a second antenna attached in a vicinity of a rear glass of the vehicle, wherein the first antenna and the second antenna are configured to transmit and receive an electromagnetic wave in a predetermined frequency band F, and wherein defining a region A and a region B with respect to a vehicle center axis extending in a traveling direction of the vehicle, so as to bisect a vehicle width of the vehicle from a viewpoint in a direction normal to a horizontal plane, the first antenna is arranged in the region A, and the second antenna is arranged in the region B.
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公开(公告)号：US20220363038A1
公开(公告)日：2022-11-17
申请号：US17874221
申请日：2022-07-26
Applicant: AGC Inc.
Inventor： Nobutaka KIDERA , Kazuhiko NIWANO , Shoichi TAKEUCHI , Tetsuo ABE , Yutaka KUROIWA
Abstract: A laminated glass according to an embodiment of the present invention includes a first glass plate, a second glass plate, and an interlayer film held between the first glass plate and the second glass plate. When a relative dielectric constant of the first glass plate is represented by εg1; a relative dielectric constant of the second glass plate is represented by εg2; a relative dielectric constant of a first interlayer film provided in a first region of the interlayer film is represented by εm1; a reflection coefficient at an interface between the first glass plate and the first interlayer film is represented by Γ1; and a reflection coefficient at an interface between the second glass plate and the first interlayer film is represented by Γ2, the reflection coefficients Γ1 and Γ2 satisfy relations 0.0≤Γ1≤0.2 and 0.0≤Γ2≤0.2.
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公开(公告)号：US20220274380A1
公开(公告)日：2022-09-01
申请号：US17746630
申请日：2022-05-17
Applicant: AGC Inc.
Inventor： Shunsuke SADAKANE , Shoichi TAKEUCHI , Hideo TSUBOI , Kazuhiko NIWANO , Nobutaka KIDERA , Ryota OKUDA
Abstract: A laminated glass according to the present invention includes a first glass plate, a second glass plate, and an interlayer film. The interlayer film includes a laminated region including a first layer that is in contact with the first glass plate, a second layer that is in contact with the second glass plate, and a third layer disposed between the first layer and the second layer. When the relative dielectric constant of the first glass plate is denoted by εg1, the relative dielectric constant of the second glass plate is denoted by εg2, the relative dielectric constant of the first layer is denoted by εm1, the relative dielectric constant of the second layer is denoted by εm2, and the relative dielectric constant of the third layer is denoted by εm3, relationships εm1 εm1, εm3>εm2 are established.
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公开(公告)号：US20240275020A1
公开(公告)日：2024-08-15
申请号：US18635194
申请日：2024-04-15
Applicant: AGC Inc.
Inventor： Shoichi TAKEUCHI , Yusuke Kato , Toshiki Sayama , Hideaki Shoji
CPC classification number: H01Q1/1271 , H01Q13/106
Abstract: A planar antenna comprising a slot formed in a flat conductor, wherein the slot includes a first slot extending in a first direction between a first feeding point and a second feeding point, a second slot extending in a second direction different from the first direction from an end portion of the first slot, a third slot extending in a fourth direction opposite to the second direction from an end portion of the first slot in a third direction opposite to the first direction, reaching an open end in the fourth direction, and a J-shaped slot extending from an end portion of the second slot in the second direction to an open end open in the first direction, and wherein a slot width at an open end of the J-shaped slot is wider than a slot width at the end portion of the second slot in the second direction.
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公开(公告)号：US20240235014A1
公开(公告)日：2024-07-11
申请号：US18616700
申请日：2024-03-26
Applicant: AGC Inc.
Inventor： Hideaki SHOJI , Kiyoshi NOBUOKA , Shoichi TAKEUCHI , Toshiki SAYAMA , Yusuke KATO
CPC classification number: H01Q1/325 , H01Q9/0407
Abstract: A vehicle antenna includes: a vehicle window glass an electronic device provided in a vicinity of a vehicle width direction central portion at or near upper portion of the vehicle window glass; and an antenna attached to the upper portion of the vehicle window glass such that a normal to a radiation surface passes through a principal surface. A vehicle width direction central position of the antenna is separated from a reference position that is a vehicle width direction center of the electronic device.
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Patent Agency Ranking
公开(公告)号：US20230238681A1
公开(公告)日：2023-07-27
申请号：US18127325
申请日：2023-03-28
Applicant: AGC Inc. , SoftBank Corp.
Inventor： Yusuke KATO , Hideaki SHOJI , Shoichi TAKEUCHI , Toshiki SAYAMA , Ryo YAMAGUCHI , Kazuma TOMIMOTO
CPC classification number: H01Q1/1271 , H01Q1/325 , H01Q25/002
Abstract: A vehicle antenna system having high transmission and reception efficiency is provided. A vehicle antenna system includes an antenna that is attached to a vehicle and is capable of transmitting and receiving radio waves of a predetermined frequency band. The antenna is attached to the vehicle in such a way that an elevation angle of the antenna with respect to a horizontal plane becomes large in a predetermined angle range in accordance with the height of a communication frequency band.
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公开(公告)号：US20240347894A1
公开(公告)日：2024-10-17
申请号：US18754128
申请日：2024-06-25
Applicant: AGC Inc.
Inventor： Yusuke KATO , Shoichi TAKEUCHI , Hideaki SHOJI , Toshiki SAYAMA
CPC classification number: H01Q1/1271 , H01Q1/3233 , H01Q1/325 , H01Q9/0407
Abstract: An EBG structure-attached glass plate includes a vehicle roof glass for attachment to a metal frame of a vehicle body, an EBG structure that is disposed on a first main face of the roof glass, that has a predetermined conductor pattern periodically disposed thereon, and that is formed in a frame shape, and a radio wave transmitting and receiving region surrounded by the EBG structure.
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公开(公告)号：US20210273321A1
公开(公告)日：2021-09-02
申请号：US17322153
申请日：2021-05-17
Applicant: AGC Inc.
Inventor： Shoichi TAKEUCHI , Hideaki SHOJI
Abstract: An antenna system includes a glass plate, a resin layer, and an antenna, wherein a predetermined frequency of 3 GHz or greater is defined as F, a transmission coefficient S21 of the glass plate concerning an incident wave of F is defined as S21G, S21 of a laminate concerning the F is defined as S21GR, a frequency closest to F at which S21 of the glass plate becomes a maximum is defined as FP, S21 of the glass plate concerning an incident wave of FP is defined as S21GP, a frequency closest to F among frequencies of incident waves at which S21 of the glass plate becomes a minimum is defined as FV, and S21 of the glass plate concerning an incident wave of FV is defined as S21GV, and wherein a thickness of the resin layer is configured such that: S21GR−S21G≥(S21GP−S21GV)×0.2.
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公开(公告)号：US20230318192A1
公开(公告)日：2023-10-05
申请号：US18206408
申请日：2023-06-06
Applicant: AGC Inc.
Inventor： Toshiki SAYAMA , Hideaki SHOJI , Yusuke KATO , Shoichi TAKEUCHI
Abstract: An antenna includes a first conductor plate and a second conductor plate, the second conductor plate being disposed in the first conductor plate so as to be apart from the first conductor plate with a distance between both plates; wherein the first conductor plate includes a first U-shaped portion, the first U-shaped portion being formed in a U-shape so as to include a first side portion, a second side portion opposed to the first side portion, and a first front portion connected between the first side portion and the second side portion; wherein the second conductor plate includes a second U-shaped portion, the second U-shaped portion being formed in a U-shape so as to include a third side portion, a fourth side portion opposed to the third side portion, and a second front portion connected between the third side portion and the fourth side portion.
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公开(公告)号：US20220037772A1
公开(公告)日：2022-02-03
申请号：US17502650
申请日：2021-10-15
Applicant: AGC Inc.
Inventor： Kenichiro KODAMA , Koki MIKAMO , Fuminori WATANABE , Shoichi TAKEUCHI
IPC: H01Q1/32
Abstract: A vehicle antenna includes a conductor plate, a radiator plate facing the conductor plate, a feeding portion located on a same side as the conductor plate with respect to the radiator plate, a connection conductor connecting the feeding portion and the radiator plate, and a first element and a second element arranged away from each other on both sides in a vehicle-width direction of a vehicle with respect to the radiator plate, wherein the radiator plate is arranged at an inclination of equal to or less than ±15 degrees with respect to a vertical plane perpendicular to a horizontal plane.
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