| 摘要 |
PURPOSE:To control the transmission power of the transmission part in accordance with the levels of the reception signals and thus to save the power consumption by lowering the transmission power of the transmission part when the intensity of the reception electric wave is large and increasing the transmission power the reception wave intensity is small respectively. CONSTITUTION:The transmission part radiates the electric wave of a fixed frequency, and the reception part receives the external electric wave respectively. The transmission power is reduced in case the intensity of the reception wave is large at the reception part; while the transmission power is increased when the reception wave intensity is small each. Such control of the transmission power is performed through the control circuit. Thus the transmission power of the transmission part is controlled in accordance with the reception signal levels, and as a result the power consumption can be reduced. |
