Understanding Proper Placement of Cables and Antennas in a Passive DAS

Estimated Reading Time: 3 minutes

The effective performance of a passive Distributed Antenna System (DAS) relies on the optimal placement of cables and antennas within the building needing better connectivity. The placement of antennas and cables depends on a number of factors, including outside signal strength and interior building layout.

Let’s examine the top factors affecting cable and antenna selection and placement in a passive DAS.

Because Omni Antennas can capture signal from various towers, they offer the best solution for buildings with very poor signal reception.

A Yagi Antenna, on the other hand, is directional, which means it must be pointed in a specific direction. Pointing a Yagi Antenna at a very weak signal source can ensure a boost in every Radio Frequency wave from that source.

A weak outside signal also necessitates closer placement of interior broadcast antennas or perhaps even installing additional boosters within the building. A single powerful cell phone signal booster, designed for large office buildings, can provide coverage for up to 35,000 square feet.

When selecting interior antennas, consider employee use patterns or areas of greatest signal need like retail checkout lines or hospital waiting rooms.

The shortest route from the outside antenna to the booster and on to the interior antennas determines optimal cable placement.

If the building layout necessitates longer cable runs, the system might require more antennas or boosters to adequately boost the signal. However installers should consider how additional cable runs offset signal gain when adding boosters.

Cable bend also influences system efficiency. Cables bent at 180 degrees or more will less effectively transfer signal between antennas and the booster. Therefore consider how you run cable in tight areas, like near the signal booster itself or in corners throughout the building.

Each building dictates unique installation requirements, and we are here to help.

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