Agc Inc.

Asahi Glass Company, Limited

Agc Glass Europe

Hitachi, Ltd.

Ntt Docomo, Inc.

Softbank Corporation

Agc Automotive Americas R&d, Inc.

Shoichi Takeuchi

Hideaki Shoji

Naoki Hashimoto

Fuminori Watanabe

Yusuke Kato

Toshiki Sayama

Kenichiro Kodama

Fumitaka Terashima

Nobutaka Kidera

Kazuhiko Niwano

Peter Schnoerch

Koki Mikamo

Koji Ikawa

Shunsuke Sadakane

Ryuta Sonoda

Yutaka Kuroiwa

Shuhei Matsumoto

Tetsuro Imai

Koichi Osada

Tetsuo Abe

Hiroaki Shimozono

Ryo Yamaguchi

Kazuhiro Nakano

Dan Lis

Katsumi Hisaeda

Ryota Okuda

Norihito Nakazawa

Remi Sarkis

Hiroyuki Hayakawa

Kazuma Tomimoto

Eiji Saita

Naohito Toriumi

Hideo Tsuboi

Paul Schoebrechts

Yuji Aizawa

Minoru Inomata

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.

Vehicle antenna system

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.

Antenna

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.

Antenna system for vehicles

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 Sof the glass plate concerning an incident wave of F is defined as S, Sof a laminate concerning the F is defined as S, a frequency closest to F at which Sof the glass plate becomes a maximum is defined as F, Sof the glass plate concerning an incident wave of Fis defined as S, a frequency closest to F among frequencies of incident waves at which Sof the glass plate becomes a minimum is defined as F, and Sof the glass plate concerning an incident wave of Fis defined as S, and wherein a thickness of the resin layer is configured such that: S−S≥(S−S)×0.2.

Antenna system

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 ε; a relative dielectric constant of the second glass plate is represented by ε; a relative dielectric constant of a first interlayer film provided in a first region of the interlayer film is represented by ε; a reflection coefficient at an interface between the first glass plate and the first interlayer film is represented by Γ; and a reflection coefficient at an interface between the second glass plate and the first interlayer film is represented by Γ, the reflection coefficients Γand Γsatisfy relations 0.0≤Γ≤0.2 and 0.0≤Γ≤0.2.

Laminated glass

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 &#xb1;15 degrees with respect to a vertical plane perpendicular to a horizontal plane.

Vehicular antenna, vehicular antenna-attached window glass, and antenna system

An antenna system for a vehicle includes a plurality of antenna sets provided on or in proximity to a dielectric arranged on front and rear sides or on right and left sides of the vehicle, or arranged on both thereof, wherein a first antenna set includes first and second antennas, a second antenna set includes third and fourth antennas, a third antenna set includes fifth and sixth antennas, a fourth antenna set includes seventh and eighth antennas, each of the first, third, fifth, and seventh antennas has a higher antenna gain for transmitting and receiving a horizontally polarized wave than transmitting and receiving a vertically polarized wave, and each of the second, fourth, sixth, and eighth antennas has a higher antenna gain for transmitting and receiving the vertically polarized wave than transmitting and receiving the horizontally polarized wave.

Antenna system for vehicle

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 &#x3b5;, the relative dielectric constant of the second glass plate is denoted by &#x3b5;, the relative dielectric constant of the first layer is denoted by &#x3b5;, the relative dielectric constant of the second layer is denoted by &#x3b5;, and the relative dielectric constant of the third layer is denoted by &#x3b5;, relationships &#x3b5;&#x3c;&#x3b5;, &#x3b5;&#x3c;&#x3b5;, &#x3b5;&#x3c;&#x3b5;, &#x3b5;&#x3c;&#x3b5;, &#x3b5;&#x3e;&#x3b5;, &#x3b5;&#x3e;&#x3b5;are established.

An antenna device includes a first conductor plate including a first end portion and a second end portion, the first conductor plate being provided with a first feeding portion between the first end portion and the second end portion, a second conductor plate including a third end portion connected to the first feeding portion, a fourth end portion located at a position away from the first conductor plate, and a plate surface of which width in a direction parallel to the first conductor plate increases with a distance from the third end portion toward the fourth end portion, and a third conductor plate including a fifth end portion capacitively coupling with the fourth end portion, a sixth end portion connected, on a same side as the first end portion with respect to the first feeding portion, to the first conductor plate, and a counter portion opposite the plate surface.

Antenna device, window glass for vehicle, and window glass structure

A glazing panel comprising (i) a pane of glass, (ii) an antenna, (iii) an electrically conductive connector joined to the antenna by a solder material, and (iv) a coaxial cable joined to the electrically conductive connector. The electrically conductive connector is a flat connector comprising first and a second electrically conductive portions laminated between two films of a resilient material.

Glazing panel having an electrically conductive connector

An antenna includes a flat conductor, and the flat conductor includes a first slot extending in a first direction, a second slot connected to the first slot and extending in a second direction, a third slot connected to the first slot and including another end that is open through an outer edge of the conductor, the third slot extending to one side of the first slot opposite from the second slot, and a fourth slot connected to the second slot, the fourth slot extending to one side of the second slot opposite from the first slot, wherein the third slot has a wide portion, and the fourth slot has a wide portion, and the outer edge includes an inclined portion inclined with respect to a virtual line that passes through the another end of the third slot and that is perpendicular to a direction in which the third slot extends.

Antenna and window glass for vehicle

Glazing panel having an electrically conductive connector. A glazing panel comprising (i) a pane of glass, (ii) an antenna, (iii) an electrically conductive connector joined to the antenna by a lead-free solder material, and (iv) a coaxial cable joined to the electrically conductive connector.

The present invention relates to a vehicular antenna apparatus including: a dielectric substrate; an antenna provided to the dielectric substrate; and a connector electrically connected to a feeding cable of a receiving apparatus, in which the antenna includes an antenna conductor provided to the dielectric substrate, and a feeding electrode electrically connected to the antenna conductor and provided on a first surface of the dielectric substrate, the connector includes a connector main body supporting the feeding cable, and a terminal electrode provided to the connector main body and electrically connected to the feeding cable, and the feeding electrode and the terminal electrode are joined via an insulating adhesive, thereby being capacitively coupled with each other.

Vehicular antenna apparatus and connector for vehicular antenna apparatus

A glass antenna arranged on a vehicle window glass includes a slot antenna formed by cutting out a conductive film; and a power supply unit configured to supply power to the slot antenna. The slot antenna includes a first slot extending in a first direction; a second slot connected to one end of the first slot, and extending in a second direction, a first wide-width slot connected to the other end of the first slot directly or via a first connection slot, and having a slot width greater than that of the first slot, and a second wide-width slot connected to a terminal end portion of the second slot directly or via a second connection slot, and having a slot width greater than that of the second slot. The power supply unit is arranged so as to straddle the first slot.

Growing community of inventors

Tokyo, Japan

Shoichi Takeuchi