Passive Inter Modulation (PIM) Testing

Abstract

The objective of this document is to define best practices for measurement and prevention of Passive Inter modulation (PIM) in wireless networks. While International Electro technical Commission (IEC) specification does a good job of defining test procedures for PIM testing individual RF components in a factory environment, additional guidelines are needed for field environments. Due to the added complexity in-building environments, has been included to provide best practices for Distributed Antenna System (DAS) applications. Similarly, has been included to provide best practices for Small Cell deployments. PIM testing fiber-fed antenna installations which run optical fiber and DC power directly to the antenna structure, also referred to as Active Antenna Solutions (AAS), are outside of the scope of this document.