发明名称 VEHICLE GLASS ANTENNA AND VEHICLE GLASS ANTENNA DEVICE
摘要 <P>PROBLEM TO BE SOLVED: To provide a vehicle glass antenna capable of obtaining an excellent receiver sensitivity even if an antenna pattern formed in a vehicle window glass is small. Ž<P>SOLUTION: In mounting a lateral window glass 14 on a vehicle body of an automobile, when an antenna formable region area is 0.05 to 0.20m<SP>2</SP>and besides a radiowave frequency received by the vehicle glass antenna 11 is 1 MHz, antenna elements 15a , 15b are formed so that a capacitance between the vehicle body and a feeding point 16 becomes 15 to 100 pF. Owing to this, the capacitance between the vehicle body and the feeding point 16 is below 15pF and then the capacitance between a coaxial cable 12 and an amplifier 13 becomes larger than that between the vehicle glass antenna 11 and the vehicle body. Also, an output property from the amplifier 13 of the vehicle glass antenna 11 is prevented from falling off to ensure the receiver sensitivity. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
申请公布号 JP2009303071(A) 申请公布日期 2009.12.24
申请号 JP20080157107 申请日期 2008.06.16
申请人 NIPPON SHEET GLASS CO LTD 发明人 OKA HIDETOSHI;KAKIZAWA HITOSHI
分类号 H01Q1/32 主分类号 H01Q1/32
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