ANTENNE AN EINEM SEITENFENSTERGLAS EINES KRAFTFAHRZEUGS

摘要

A wide-band antenna attached to a side window glass 12 of an automobile, such as a side window glass in the rear section of a station wagon, for receiving FM radio and TV broadcast waves. The antenna comprises a feed point 16 in the fore-upper corner region of the window glass 12, and a main antenna element 14, which is a conductive strip extending from the feed point along the quadrilateral perimeter 12a, 12b, 12c, 12d of the window glass to terminate at a short distance from the feed point. The direction of extension of the main element 14 may be either clockwise or counterclockwise. The main element 14 may have a supplementary part 14e, (14f), fig. 5, which extends from the end of the essential part 14a, 14b, 14c, 14d along at least a portion of one edge of the window glass. The reception gain of the antenna maximizes when the total length of the main antenna element 14 is adjusted to an optimum. Optionally the antenna includes an impedance matching element (18), fig. 6, which is a conductive strip connected to the main antenna element at a short distance from the feed point 16. <IMAGE>