| 摘要 |
PURPOSE:To prevent undesired electromagnetic coupling between plural antennas used for different frequency bands affected to each other. CONSTITUTION:When plural antenna 1, 2 used for different frequency bands affected to each other are arranged integrally or closely to each other, at least one antenna 2 is enclosed by a frequency selection plate 5 which transmits a radio wave at a frequency band used by the antenna 2 and interrupts a radio wave at a frequency band used by the other antenna 1 so that the electromagnetic coupling between the radio wave of the other antenna 1 and the radio wave of the antenna 2 is prevented. |
