| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle use antenna system that is independent of operating environment, such as in-cabin environment and an operating frequency band of a telephone set. SOLUTION: An antenna 10a, formed to be resonated at a frequency of 800MHz and an antenna 10b formed resonate at a frequency of 1500MHz, are placed, and the one is used for a transmission reception antenna while the other is used for a exclusively receiving antenna, depending on the operating frequency of a portable telephone set so as to attain common use of the antennas, even when the frequencies are different. Moreover, since each antenna is removably supported on a placing base, the mount method of rear tray mount or window glass mount is selected and revised freely, depending on an in-cabin environment. |
