| 摘要 |
PURPOSE:To improve the speech quality, by adding a reception-only antenna to a transmission/reception antenna. CONSTITUTION:The signal received by the 1st transmission/reception antenna 30 is received also by the 2nd reception-only antenna 40 which is set apart from the antenna 30 and then led to a receiver RX containing the same diversity reception function as that to which the received signal is led from the antenna 30 by a reception distributor 20 via a reception BPF41. In case the demodulation output of the signal received by the antenna 30 changes momentarily together with the demodulation output of the signal received by the antenna 40, both demodulation output levels are always compared with each other. Then the higher output level is used. This system keeps the output of the receiver at a stable level. |
