| 摘要 |
PROBLEM TO BE SOLVED: To prevent interference, etc. between the individual elements while more compactly arranging a plurality of antennas having different target frequency bands, and to make the antennas perform transmitting/receiving operations in a stable state. SOLUTION: An antenna element 32 for the GPS (global positioning system) and an antenna element 33 for the ETC (electronic toll collection system) are arranged in parallel on an antenna substrate 31. The side of a dielectric plate 332 on which the element pattern 331 of the antenna element 33 for the ETC is formed is surrounded by a grounding plate 333. COPYRIGHT: (C)2004,JPO&NCIPI
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