Patent ID: 8421691
Filing Date: 2013-04-16
Classification: H01Q

Abstract:
1. A vehicular glass antenna which is provided in an upper blank space of defogging heater strips of a rear window glass of the vehicle, the vehicular glass antenna comprising: an AM broadcast wave receiving antenna including; a plurality of horizontal strips arranged at intervals, at least two vertical strips which are orthogonal to the horizontal strips, and which are apart from each other, and an AM feed point located between the vertical strips, on uppermost one of the horizontal strips or through an extension line extending from a portion of the uppermost one of the horizontal strips, and two FM broadcast wave receiving antennas extending, respectively, from two FM feed points provided above the uppermost one of the horizontal strips of the AM broadcast wave receiving antenna on left and right sides of the AM feed point, along a part of an outermost portion of the AM broadcast wave receiving antenna, the FM broadcast wave receiving antennas extending, respectively, in opposite directions of a clockwise direction and a counterclockwise direction, one of the FM broadcast wave receiving antennas which has a substantially U-shape, and which surrounds all of ends of the plurality of the horizontal strips of the AM broadcast wave receiving antenna on one side, the other of the FM broadcast wave receiving antennas which has a substantially U-shape, and which surrounds a part of ends of the plurality of the horizontal strips on the other side, and each of the two FM broadcast wave receiving antennas including a second horizontal strip which is adjacent to the horizontal strips of the AM broadcast wave receiving antenna to achieve a capacitive coupling between the horizontal strips of the two FM broadcast wave receiving antennas and the horizontal strips of the AM broadcast wave receiving antenna, wherein the horizontal strips of the FM broadcast wave receiving antennas which extend, respectively, from the two FM feed points horizontally in opposite directions are adjacent to the horizontal strips of the AM broadcast wave receiving antenna to achieve the capacitive coupling between the horizontal strips of the FM broadcast wave receiving antennas and the horizontal strips of the AM broadcast wave receiving antenna, each of the FM broadcast wave receiving antennas includes at least a vertical strip extending from an end of one of the horizontal strips in a substantially vertical direction or in an arc shape along outsides of the plurality of the horizontal strips of the AM broadcast wave receiving antenna, wherein each of the FM broadcast wave receiving antennas includes one or a plurality of folded horizontal strips which is formed by folding an end of the FM broadcast wave receiving antenna, and which is adjacent to the horizontal state strips of the AM broadcast wave receiving antenna for receiving the AM broadcast wave to achieve a capacitive coupling between the one or the plurality of the folded horizontal strips of the FM broadcast wave receiving antennas, and the horizontal strips of the AM broadcast wave receiving antenna, and wherein each of the FM broadcast wave receiving antennas wraps around the ends of the plurality of the horizontal strips of the AM broadcast wave receiving antenna.