| 摘要 |
PURPOSE: An intermediate frequency distribution antenna system is provided to reduce installation cost and allow maintenance to be performed in an efficient manner, while transmitting a signal without loss even to the coaxial cable. CONSTITUTION: An intermediate frequency distribution antenna system comprises a hub unit(100) for converting the signal received from a base station into an intermediate frequency signal, filtering the converted signal and transmitting the signal to a coaxial cable(150), and converting the intermediate frequency signal received from the coaxial cable, into an original frequency signal, amplifying the converted signal and transmitting the signal to the base station; and a distribution antenna module(200) for filtering the intermediate frequency signal transmitted through the coaxial cable from the hub unit and transmitting the signal to each subscriber, and converting the signal received from each subscriber into an intermediate frequency signal, amplifying the converted signal, and transmitting the signal to the hub unit through the coaxial cable. |
