MULTIPLE-ANTENNA SYSTEM

摘要

An antenna system which is disclosed comprises; a front end unit; a back end unit; and a feeding line which connects the front end unit and the back end unit. The front end unit comprises; two or more antennas; a combiner circuit which is connected to the lower side of the antenna and is connected to the upper side of the feeding line; and an antenna connector which electrically connects the antenna to the combiner through an antenna plug. The back end unit comprises; a power source which is connected to the feeding line; and a resistance evaluation circuit which is connected between the power source and the feeding line. The resistance evaluation circuit measures a resistance of the front end unit through the feeding line. At least one among antenna connectors mechanically is in contact with a jumper having a jumper plug. High resistance connection and low resistance connection are provided depending on the connection of an antenna facing with a space between the antenna connector and the jumper to the combiner. The resistance evaluation circuit evaluates the resistance of the front end unit and detects that the antenna is connected to an antenna signal amplifier.