Multi-operator and multi-band DAS

Point of Interface Design

Multi-operator DAS requires a point of interface where signals from multiple mobile network operators are combined onto a shared distribution system. The POI uses wideband combiners or band-specific diplexers to merge signals from different operators and frequency bands onto a common coaxial or fiber backbone. Each operator connects their base station or small cell to designated input ports on the POI. The combiner must handle the full bandwidth from 700 MHz through 3.5 GHz or higher while maintaining isolation between operator inputs to prevent interference. Typical POI insertion loss is one…