Analysis of RF requirements for Active Antenna System

Abstract

Active Antenna System (AAS) is a Base Station equipped with an antenna array system, the radiation pattern of which may be dynamically adjustable. Since the interactions between the transmitters and receivers within the AAS might be different from the convention BS and the convention antenna system, the impacts of the transmitted or received radio signals on the transmitter and receivers shall be studied. In this article, we present an overview on some typical new characteristics of the AAS, such as spatial ACLR, in-band blocking. Then quantitative study of in-band blocking is conducted according system level simulations.