| 摘要 |
PROBLEM TO BE SOLVED: To improve sensitivity and directivity in a glass antenna device in which AF, FM antennas are provided on a rear window glass having a defogger formed thereon. SOLUTION: The antenna device is provided with a defogger 16 provided on the rear window glass of a vehicle, the AM antenna 12 provided on a space other than the defogger on the rear window glass, the FM antenna 14 provided on a space between the defogger and the AM antenna, a two-input amplifier 22 for amplifying signals received by the AM antenna and the FM antenna, an AM lead wire 12b for connecting the power feeding terminal 12a of the AM antenna to the amplifier 22, an FM lead wire 14b for connecting a power feeding terminal 14a of the FM antenna to the amplifier 22, and a coil element 26 inserted into the AM lead wire near the AM power feeding terminal. COPYRIGHT: (C)2006,JPO&NCIPI
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