| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive antenna switching device which is excellent in performance without having to provide a distributor. SOLUTION: This antenna switching device 21 provided with antennas 6a to 6d and devices 27a to 27c to be connected to the antennas and used in a reception system adopting a diversity method is provided with a selection switch 22 for selecting any of antenna signals from the antennas 6a to 6d and inputting the selected antenna signal, an output switch group 24 for outputting the antenna signal selected by the selection switch 22 to any of the devices 27a to 27c, a connection device switching circuit 25 for outputting the antenna signal to one of the devices by controlling the output switch group 24, and a decoder driver 25 for switching the antenna signal to be selected by the selection switch 22 by controlling the selection switch 22 on the basis of an instruction from the device. COPYRIGHT: (C)2004,JPO
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