| 摘要 |
PROBLEM TO BE SOLVED: To obtain excellent antenna reception sensitivity by optimally forming an antenna pattern in accordance with the situation while obviating previous tuning. SOLUTION: In the vehicle glass antenna with an antenna pattern formed on vehicle window glass from an antenna element 10 comprised of a conductor, pin diodes D1, D2, D3, ... are interposed in the antenna element 10 and a pin diode control means 21 performs ON/OFF control of these pin diodes D1, D2, D3, ... in accordance with the situation, thereby appropriately changing the pattern form of the antenna pattern. COPYRIGHT: (C)2007,JPO&INPIT
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