| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna device for a mobile body capable of coping with respect to a plurality of radio communication systems with one device and to be easily mounted on the mobile body. SOLUTION: The antenna device for the mobile body is provided with a plurality of antennas (11A to 11C, 12C) provided corresponding to each of the plurality of radio communication systems, a plurality of processing circuits (13A to 13C, 14A to 14C, 18, 19) one ends of which are connected with the respective antennas and to perform processings including amplification and frequency conversion to a receiving signal from a corresponding antenna to be inputted in one end or a transmission signal to a corresponding antenna to be inputted in the other end, an input/output terminal (17) to output the receiving signal to an external device or to input the transmission signal from the external device and devices (15, 16) to be connected between the other terminal of the respective processing circuits and the input/output terminal and to couple the receiving signal to be outputted from the respective processing circuits or to distribute the transmission signal to be inputted from the input/ output terminal to the respective processing circuits.</p> |
