公开(公告)号：US20220352620A1

公开(公告)日：2022-11-03

申请号：US17812849

申请日：2022-07-15

Applicant: AGC Inc.

Inventor： Yasuo MORIMOTO ,  Akira KUMAGAI ,  Takeshi MOTEGI ,  Kazuhiko NIWANO ,  Kouichirou TAKAHASHI

IPC: H01Q1/24 ,  H01Q1/42 ,  H01Q1/38

Abstract: An antenna device including a transparent antenna element that can be provided at a position visible from outside of a transparent cover of an electronic apparatus is provided.
An antenna device includes a flexible substrate that is transparent and that is to be provided on an inner surface side opposite to an outer surface of a transparent cover, made of glass or resin, of an electronic apparatus, and an antenna element that is transparent and that is to be provided at a position, of the flexible substrate, that is visible from outside of the transparent cover, the antenna element having a directivity oriented toward an outside of the electronic apparatus.

公开(公告)号：US20240063536A1

公开(公告)日：2024-02-22

申请号：US18501381

申请日：2023-11-03

Applicant: AGC Inc.

Inventor： Kouichirou TAKAHASHI ,  Osamu KAGAYA ,  Akira KUMAGAI ,  Shimpei NAGAE

IPC: H01Q3/20

CPC classification number: H01Q3/20

Abstract: A reflector system, an active reflector, and a method of positioning an active reflector are provided, whereby dead zones can be cancelled efficiently. The reflector system includes: a first active reflector having a first reflecting surface configured to reflect, at a variable reflecting angle, radio waves transmitted from a transmitter, at least a part of the first reflecting surface being in a boundary area located at a boundary between a line-of-sight area and a non-line-of-sight area formed by one or more obstacles that block the radio waves from the transmitter; and a second active reflector having a second reflecting surface configured to reflect, at a variable reflecting angle, the radio waves from the transmitter or the radio waves reflected by the first active reflector, the second reflecting surface being provided in the non-line-of-sight area, or at least a part of the second reflecting surface being provided in the boundary area.

公开(公告)号：US20230411863A1

公开(公告)日：2023-12-21

申请号：US18240110

申请日：2023-08-30

Applicant: AGC Inc.

Inventor： Kouichirou TAKAHASHI ,  Osamu KAGAYA ,  Akira KUMAGAI ,  Shimpei NAGAE

IPC: H01Q15/14

CPC classification number: H01Q15/14

Abstract: A protective plate-equipped reflective member includes a reflective member that reflects or re-radiates a radio wave incident thereon; and a protective plate that is installed on a radio wave-incident side of the reflective member, wherein d=α×λ0/(1.75×εr0.555) and α is greater than or equal to 1 and less than or equal to 1.25, where a wavelength specified with respect to an operating center frequency f0 [Hz] is denoted by λ0 [mm], a plate thickness of the protective plate is denoted by d [mm], a relative permittivity of the protective plate at the operating center frequency f0 [Hz] is denoted by εr, and a constant is denoted by α.

公开(公告)号：US20230378660A1

公开(公告)日：2023-11-23

申请号：US18229058

申请日：2023-08-01

Applicant: AGC Inc.

Inventor： Kouichirou TAKAHASHI ,  Kiyoshi NOBUOKA ,  Shoichi TAKEUCHI ,  Hideaki SHOJI ,  Yusuke KATO ,  Toshiki SAYAMA

IPC: H01Q21/06 ,  H01Q1/32 ,  H04B7/0413

CPC classification number: H01Q21/061 ,  H01Q1/32 ,  H04B7/0413

Abstract: An antenna system for vehicle includes a vehicle and a MIMO antenna that is mounted on the vehicle and that transmits and receives radio waves of a predetermined frequency. The MIMO antenna includes antennas including a first antenna that mainly transmits and receives a first polarized wave and a second antenna that mainly transmits and receives a second polarized wave orthogonal to the first polarized wave, and the antennas are dispersedly arranged on the vehicle. One of the first antenna and the second antenna are arranged based on at least one of (1) a configuration in which one is arranged in a central region and another one is arranged in a first peripheral region or a second peripheral region and (2) a configuration in which one is arranged in a first region and another one is arranged in a second region.

公开(公告)号：US20210191011A1

公开(公告)日：2021-06-24

申请号：US17191915

申请日：2021-03-04

Applicant: AGC Inc.

Inventor： Shimpei MORITA ,  Kouichirou TAKAHASHI ,  Osamu KAGAYA ,  Takato KAJIHARA ,  Akiyo NOGAMI

IPC: G02B5/20

Abstract: A radio-wave transmitting substrate includes a dielectric substrate, and, on at least one main surface of the dielectric substrate, a heat-ray reflection film including an electroconductive film, and an opening where the electroconductive film is absent in a plan view. At least a part of the at least one main surface in a plan view is a radio-wave transmitting region. The radio-wave transmitting region is a region where every 1-cm square unit region in the region satisfies the following expression (a): L>802.6×S−503.7. L is an overall length (unit: mm/cm2) of a boundary between the heat-ray reflection film and the opening in the unit region, and S is a proportion of an area occupied by the heat-ray reflection film in the unit region.