ISOLATION DETECTION METHOD BETWEEN INPUT AND OUTPUT OF MOBILE COMMUNICATION REPEATER

摘要

PURPOSE: A transmitting and receiving separation sensing method of a mobile communication relay is provided to minimize oscillation phenomenon by controlling relay gain according to current transmitting and receiving separation degree. CONSTITUTION: A relay output waveform is analyzed through a spectrum analyzer in an oscillation state. An output voltage of a level sensing unit is converted according to the size of a sinusoidal wave. An output voltage value is getting larger if the size of the sinusoidal wave is larger. If the size of the sinusoidal wave is smaller, the output voltage value gets smaller. A relay gain is controlled by the measurement of degree of repeater transmission and reception separation.