Agc Inc.

Agc Glass Europe

Agc Flat Glass North America, Inc.

Agc Vidros Do Brasil Ltda.

Ryota Okuda

Toshiki Sayama

Takeshi Motegi

Osamu Kagaya

Yusuke Sato

Shunsuke Sadakane

Ryuta Sonoda

Shoichi Takeuchi

Kazuhiko Niwano

Nobutaka Kidera

Yoshiyuki Ikuma

Tetsuya Hiramatsu

Masaki Horie

Hideo Tsuboi

Minami Hagiwara

A planar antenna includes a dielectric layer including a first surface and a second surface on a side opposite from the first surface, an antenna conductor provided on the first surface, a ground conductor provided on the first surface or the second surface, or provided on both of the first surface and the second surface, and a transmission line including a signal line that is connected to the antenna conductor or provided in proximity to the antenna conductor, wherein a dielectric portion of the dielectric layer that is in contact with the signal line has a loss tangent of 0.007 or less at 28 GHz.

Planar antenna, layered antenna structure, and window glass 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.

Laminated glass

An antenna system includes a glass plate having a thickness of 1.1 mm or more and a dielectric loss tangent of 0.005 or more at 28 GHz, and an antenna located away from one of surfaces of the glass plate, wherein a ratio of electric power radiated from the antenna to electric power input into the antenna is defined as a radiation efficiency, and when an effective wavelength of an electromagnetic wave at a predetermined frequency is 10 GHz or more is denoted as &#x3bb;g and the radiation efficiency as &#x3b7;[dB] when the glass plate and the antenna are in contact, and is denoted as &#x3b7;[dB] when a distance between the one of the surfaces and the antenna is &#x3bb;g/2, the glass plate and the antenna are arranged to obtain the radiation efficiency of &#x3b7;[dB] that satisfies &#x3b7;&#x2265;&#x3b7;+(&#x3b7;&#x2212;&#x3b7;)&#xd7;0.1.

Antenna system

The present invention relates to a laminated body with electric conductor including a substrate; a functional layer having at least an adhesive layer; an electric conductor; and a protective material, wherein the substrate, the functional layer having at least the adhesive layer, the electric conductor, and the protective material are sequentially laminated in a thickness direction, and wherein a thickness of the functional layer is less than or equal to 0.300 mm.

Laminated body having a substrate with an electrical conductor thereon that associated with a functional layer

Growing community of inventors

Tokyo, Japan

Ryota Okuda