| 摘要 |
PROBLEM TO BE SOLVED: To enable a stable changeover of an antenna connection target in the case of small internal power in a mobile electronic apparatus.SOLUTION: A radio communication circuit 110, a charging power reception circuit 150 and a level detection means 130 are connected to a shared antenna 101. The radio communication circuit 110 is connected to a first switch means 120 at both ends. The power reception circuit 150 is connected to a second switch means 140 at both ends. When a detection level of the level detection means 130 is high, the first switch means 120 is switched on and the second switch means 140 is switched off, so that input power is selectively output to the charging power reception circuit 150. When a reception signal level is low, the first switch means 120 is switched off and the second switch means 140 is switched on, so that the reception signal is selectively output to the radio communication circuit 110. |
