Asahi Glass Company, Limited

Hiroyuki Hayakawa

Ryuta Sonoda

Shoichi Takeuchi

Koichi Osada

Shuji Taguchi

Toshio Minowa

A antenna device, which includes a first dielectric substrate having a patch conductor disposed thereon; a second dielectric substrate having a grounding conductor disposed on a confronting substrate surface confronting the patch conductor; and a conductor for electromagnetic coupling, extending from the confronting substrate surface of the second dielectric substrate toward the first dielectric substrate, is provided. The antenna device is small and is capable of being mounted to a windowpane for a vehicle since the conductor for electromagnetic coupling is not connected to the grounding conductor with respect to a direct current and since the conductor for electromagnetic coupling and the patch conductor are electromagnetically coupled each other.

Antenna device

A window glass for vehicles equipped with a conductor, which comprises a glass plate, a patterned conductor layer formed on the glass plate, and a covering layer formed to cover the conductor layer, wherein the covering layer comprises a fired product obtained by firing a composition containing a crystalline glass powder and a reducing agent capable of reducing silver ions.

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Aiko-gun, Japan

Hiroyuki Hayakawa