PROBLEM TO BE SOLVED: To provide a vehicle glass antenna which improves receiver sensitivity to vertical polarization from forward and backward.SOLUTION: A glass antenna 100, provided in the vicinity of a corner part between an upper edge and a side edge of the vehicle window glass, includes: a core wire side feeding point 40; an earth side feeding point 50 juxtaposed with the core wire side feeding point mutually in proximity in a position further remote from the side edge of the window glass than the core wire side feeding point; and a loop element 10 of a non-closed loop shape. The loop element includes: a core wire side element positioned closer to the earth side feeding point side than a virtual center line between the core wire side feeding point and the earth side feeding point in the vertical direction; and an earth side element positioned closer to the earth side feeding point side than the virtual center line. When letting LA be a maximum separation between the core wire side element and the virtual center line in the horizontal direction, and LB be a maximum separation between the earth side element and the virtual center line in the horizontal direction, the ratio of LA/LB is 0.6 or smaller.SELECTED DRAWING: Figure 3
【課題】前方及び後方からの垂直偏波に対して受信感度を高める車両用ガラスアンテナを提供する。【解決手段】車両の窓ガラスの上縁部と側縁部との間の角部の近傍に設けられる、ガラスアンテナ100であって、芯線側給電点40と芯線側給電点よりも窓ガラスの側縁部から離れた位置に芯線側給電点と互いに近接して並設されている接地側給電点50と非閉ループ形状を成すループエレメント10とを備えている。ループエレメントは、芯線側給電点及び接地側給電点間の垂直方向の仮想中心線よりも芯線側給電点側に位置する芯線側エレメント及び仮想中心線よりも接地側給電点側に位置する接地側エレメントを備える。芯線側エレメントと仮想中心線との水平方向の最大離隔距離をLA、接地側エレメントと仮想中心線との水平方向の最大離隔距離をLBとしたとき、LA/LBの割合が0.6以下である。【選択図】図3
VEHICLE GLASS ANTENNA AND WINDOW GLASS
車両用ガラスアンテナ及び窓ガラス
2017-01-05
Patent
Electronic Resource
Japanese
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