A Distributed Antenna System, known as a DAS System, is dedicated antenna infrastructure distributed throughout a building to improve cellular In-Building Coverage (IBC), i.e. mobile phone reception. A Distributed Antenna System is typically only evident to the occupants of the building as the antennas mounted below the ceiling, which vary in appearance but usually resemble a circular smoke detector in shape and size and radiate the mobile phone signal to the targeted areas indoors.
Distributed Antenna Systems are deployed in all sorts of high-traffic buildings and are largely taken for granted. Distributed Antenna System sites aim to provide a seamless end to end mobile reception and connectivity across a variety of sites types including road tunnels and bridges, rail tunnels, hotels, hospitals, universities, stadiums, carparks, shopping centres, airports, commercial office space and everything in between.
Distributed Antenna System systems can vary in size and strictly speaking even the smallest system comprising of a few antennas upwards to systems with 500+ antennas are all a type of Distributed Antenna System. The size of the system typically dictates the topology and type of Distributed Antenna System deployed, and the appropriate RF source to provide connectivity into the various carrier cellular networks.
Distributed Antenna Systems are typically multi-operator. There are some exceptions when systems are small and designed for use with Signal Boosters (Repeaters) for one carrier only. But even these smaller DAS systems can be shared by all operators when designed properly from the outset.
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