Patent ID: 8792536
Filing Date: 2014-07-29
Classification: H04B

Abstract:
1. A repeater using a digital filter, the repeater comprising: a MUX filter for filtering an RF signal received through an antenna or a signal to be transmitted through the antenna; a low noise amplifier for lowering noise of the signal filtered by the MUX filter; a down converter for converting the signal outputted from the low noise amplifier into an IF band signal to digitalize the signal; a digital filter for filtering the digital signal outputted from the down converter based on parameters inputted by a user; a filtering controller for controlling the digital filter by using a filtering coefficient calculated based on the parameters; an up converter for converting the signal filtered by the digital filter into an RF band signal; and a high power amplifier for amplifying the signal outputted from the up converter to a high power signal, wherein the filtering controller adjusts a bandwidth, a center frequency, and the number of channels of a digital signal to be filtered based on bandwidth information, frequency information, and the number of channels, which are inputted by the user.