UNIFIED COMMUNICATION REPEATER WITH CANCELLING INTERFERENCE SIGNAL AND CASCADE RELAY SYSTEM USING THEREOF

摘要

PURPOSE: An integrated repeater which cancels a feedback interference signal and a cascade relay system using the same are provided to obtain isolation between antennas using different polarization wave characteristics of a donor antenna and a service antenna. CONSTITUTION: A service antenna(200) is attached to one side of a housing around a repeater main body substrate. The service antenna generates an orthogonal polarization wave. An donor antenna port(180) for an external extension and a service antenna port(280) for an external extension are connected to an extension antenna through an RF switch. An input level and isolation indicator is connected to a digital signal processing unit. The input level and isolation indicator adjusts the oriented directivity of an antenna according to the microwave direction of a high frequency signal during installation.