Vehicle window glass antenna suited to reception of FM radio and TV broadcasting

摘要

The invention relates to a wide-band antenna attached to a vehicle window glass such as an automobile windshield for receiving FM radio and TV broadcast waves. Each element of the antenna is a conductive strip. The antenna is comprised of a main element and an impedance matching element to make a resistance component of the impedance of the antenna equal to or greater than that of coaxial cable used as the feeder for the antenna. The main element has a vertical part in a widthwise central region of the window glass with its one end at a short distance from either the lower edge or the upper edge of the glass and a horizontal part which extends from that end of the vertical part to a side marginal region of the glass. A feed point of the antenna is in a lower end portion of the side marginal region of the glass. When the horizontal part is close to the lower edge it terminates at the feed point, and the impedance matching element is connected to the horizontal part. When the horizontal part is close to the upepr edge a supplementary part of the main element extends in the side marginal region from the end of the horizontal part to the feed point, and the impedance matching element is connected to the supplementary part.