Nippon Sheet Glass Company, Limited

Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kaisha

Hajime Murakami

Harunori Murakami

Kaoru Sakurai

Hiroshi Kondo

Hiroshi Yotsuya

Hiroshi Iijima

Yoshiro Okamoto

A vehicle window glass is provided with an antenna to be fit in a window frame of a vehicle such as an automobile. The antenna comprises a plurality of antenna elements which are disposed on a portion of the glass extending generally alongside the window frame. Thus, the antenna elements are spaced from the window frame at a reference or ground potential and preferably close to the sides of the frame. The antenna elements are each designed to have a different length from one another so that they can receive radio waves covering a relatively broad frequency band with a relatively high sensitivity.

Vehicle window antenna

An antenna element is mounted on a glass of a rear quarter window of a vehicle along the edge thereof. A coupling element is provided midway along said antenna element for coupling between two segmented elements with phase adjustment between reception signals thereof in a specific frequency range. The coupling element connects the two segmented elements in lower frequency range, and disconnects the two elements in higher frequency range. The length of the antenna element is automatically corrected in respective low and high frequency ranges so as to cover a wide range.

Window antenna for a vehicle

A pair of antenna elements are mounted on a glass of a rear quarter window of a vehicle. Feed points of these elements are provided at a corner portion of the window. One antenna element extends clockwise about the center of the window glass and the other antenna element extends counterclockwise thereabout from their corresponding feed points. The characteristics of both antenna elements significantly differ and complement each other. It is convenient for a diversity reception system. An auxiliary element branches from one antenna element to extend along the other antenna element. The auxiliary element compensates for impedance characteristics of the antenna elements to tune up reception characteristics thereof.

Window antenna for a vehicle with dual feed points

Growing community of inventors

Yokohama, Japan

Hajime Murakami