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    • 9. 发明专利
    • Vehicle antenna device
    • 车辆天线装置
    • JP2012114669A
    • 2012-06-14
    • JP2010261799
    • 2010-11-24
    • Asahi Glass Co Ltd旭硝子株式会社
    • SHIMO KENICHIROWATANABE MITSUO
    • H01Q1/32H01Q5/01H01Q5/10H01Q5/378H01Q7/00H01Q9/16
    • H01Q1/1278H01Q5/20H01Q9/46
    • PROBLEM TO BE SOLVED: To provide a vehicle antenna device capable of obtaining antenna gain that can cope with reception of a radio wave of a vertical polarization even when an attachment angle of a window glass is small.SOLUTION: A vehicle antenna device includes a window glass 23 attached to a vehicle; a glass antenna 100 in which a first antenna conductor including a laterally extending element 1A, and feeding sections 16 and 17 as a pair of feeding points of the first antenna conductor are included in the window glass 23; a coaxial cable 70 whose internal conductor 71 is connected to the feeding section 16 configured to connect the element 1A thereto, and external conductor 72 is connected to the feeding section 17; and grounding members 73 and 75 by which the external conductor lying in a middle portion 74 of the coaxial cable 70 extending from the feeding sections 16 and 17 to a signal processor 80 installed on the side of a vehicle body is grounded to the vehicle body. Inclination angles of the window glass 23 at the positions of the feeding sections 16 and 17 with respect to a horizontal plane are not less than 10° nor more than 30°.
    • 要解决的问题:即使在窗玻璃的安装角度小的情况下,也能够提供能够获得能够应付垂直极化的无线电波的接收的天线增益的车载天线装置。 车辆天线装置包括安装在车辆上的窗玻璃23; 包括侧向延伸元件1A的第一天线导体和作为第一天线导体的一对馈电点的馈电部16,17的玻璃天线100包括在窗玻璃23中; 内部导体71与被配置为将元件1A连接的供电部16连接的同轴电缆70,外部导体72与供电部17连接。 以及接地构件73和75,其中位于同轴电缆70的从馈电部分16和17延伸到安装在车身侧面的信号处理器80的中部74中的外部导体接地到车体。 进给部16,17相对于水平面的位置处的窗玻璃23的倾角不小于10°,也不大于30°。 版权所有(C)2012,JPO&INPIT