Central Glass Company, Limited

Hisashi Kobayashi

Kanya Hirabayashi

Takayuki Suzuki

Yuji Katada

Masanori Kaihatsu

Akifumi Kitamura

An automotive glass antenna includes (a) a defogger having first and second bus bars; (b) a first L-shape auxiliary element connected to a lower end of the first bus bar; (c) a second L-shape auxiliary element connected to an upper end of the second bus bar; (d) a feed point provided at a position near an upper portion of the first bus bar or a lower portion of the second bus bar; and (e) a main element that includes a main vertical element extending along an outside of the first or second bus bar to achieve a capacitive coupling therewith and a main horizontal element extending from the feed point in a substantially horizontal direction. This antenna is capable of receiving FM radio broadcast waves with high gain, even if it is installed in a limited blank space around the defogger.

Automotive glass antenna

Disclosed is a window-glass antenna for a vehicle in which a conductive film is formed on the vehicle window glass, the antenna being provided in a film-removed portion formed between an opening edge of flange and an end edge of the conductive film. The antenna includes a first feeding point provided on the film-removed portion and close to the end edge of the conductive film, a second feeding point provided on the flange and at a location near the first feeding point, and a first substantially-U-shaped element connected with the first feeding point. The first substantially-U-shaped element is provided in a manner that a conductive-film-side line is arranged adjacent to the end edge of the conductive film, a tip of the conductive-film-side line is connected with a substantially-orthogonal line, and another tip of the substantially-orthogonal line is connected with a flange-side line arranged adjacent to the flange opening edge.

Growing community of inventors

Matsusaka, Japan

Hisashi Kobayashi