Using such a repeater, the mater antenna of repeater will receive the RF signal sent by Base Station, and the received signal will be sent in filter to clear out the unuseful signal which is out of the needed band. Then the signal will be e amplified to high power signal whose range is from 1W to 20W based on the size of coverage area. By the remote antenna of repeater, the amplified RF signal will be used to covering the blindness area.