In mobile communication system including GSM,CDMA,PCS,DCS and WCDMA,limited by the coverage of base station or geographic environment, such as expressways, railways, tunnels, skyscrapers, mountains etc,there may be some signal blind zones or shadowy areas, or radio signal interference areas, bringing serious impact on voice quality or failure for normal mobile communication. To improve the base station signal coverage and networkquality, mobile communication Repeater is an effective solution for