Small cell base station antenna apparatus

A small cell base station antenna apparatus comprising:

• a radio unit (RU);
• at least one antenna module installed to be capable of tilting and steering operations with respect to the radio unit;
• and
• a multi-function link configured to mediate an installation of each antenna module in the radio unit,
• wherein the multi-function link comprises:
• a center body;
• a first fixing part connected between one of both ends of the center body and the antenna module;
• a second fixing part connected between the other of the both ends of the center body and the radio unit;
• a first ball joint part having a part of any one of both ends accommodated in and coupled to an internal space of the first fixing part, having the other of the both ends connected to the antenna module, and configured to adjust a directivity of the antenna module by a tilting or steering operation;
• and
• a second ball joint part having a part of any one of both ends accommodated in and coupled to an internal space of the second fixing part, having the other of the both ends connected to a cable accommodation pipe that mediates a connection with the radio unit, and configured to additionally adjust the directivity of the antenna module.