APPARATUS AND METHOD FOR FREQUENCY BAND ADJUSTING ON DISTRIBUTED ANTENNA SYSTEM

The present invention is provided to vary a filter usage frequency of a repeater. To this end, the present invention relates to a distributed antenna system for varying a bandwidth, which varies and sets a filter usage frequency and an occupied bandwidth of a repeater for each service provider, and a method for the same. The distributed antenna device for varying a bandwidth comprises: a base station-heading matching unit for matching a base station-heading signal with any one among RF, IF, and analog, digital and optical signals; a subscriber-heading matching unit for matching a subscriber-heading signal with any one among the RF, the IF, and the analog, digital and optical signals; a filter unit for connecting the base station-heading matching unit with the subscriber-heading matching unit by varying filter information; and a control unit for controlling a filter value of the filter unit.