The 4 Main Types of Distributed Antenna Systems
The 4 Main Types of Distributed Antenna Systems
11 September 2021 - 0:36, by , in Blog, Comments off

Connecting to cell towers while inside is challenging due to the thick and sturdy materials needed to make buildings durable. If you want your staff or others in your building to have full use of their cell phones, you need a solution to blocked frequencies. One possible way to solve your problem is with one of the four main types of distributed antenna systems (DAS).

The different types of DAS are active, passive, hybrid, and digital. The type of DAS for in-building wireless solutions you will use may depend on our property. Check out the different DAS types to discover what is best for you.

Passive DAS

Buildings with passive DAS design use coaxial cables, splitters, taps, and couplers. When technicians design a passive DAS system, they must calculate equal power output at each antenna. Though the system is low maintenance system and easy to install, it is difficult to build a precise network. For instance, the longer your cables are, the weaker the connection may be.

Active DAS

Active DAS designs use a series of antennas to redistribute cell signals throughout a building. The signal is captured by an antenna on top of the building and transmitted via ethernet cables and fiber optics. Once the signal is converted, it may be redistributed by remote radio units (RRU), which in turn convert the signal back into radio frequencies (RF). Active DAS is more expensive than passive, but you can use the same cables as you do for your Wi-Fi.

Hybrid DAS

As you can tell from the name, hybrid DAS is a mix of passive and active DAS. It uses both RRUs and coaxial cables to distribute RF throughout your building. With hybrid DAS, the RRU is separate from the antenna so that the system can use both fiber optic and coaxial cables. Designers include an RRU on each floor that is connected to additional antennas with a coaxial cable. Hybrid DAS is more affordable than a full active system, but more expensive than a passive one.

Digital DAS

Another type of hybrid system is digital DAS, which converts carrier signals to ones and zeros, known as an analog to digital conversion. Digital systems are more accurate and precise, so you may encounter less interference. Digital DAS works like active DAS; the signal is captured by an antenna on top of the building before it is converted.

You should understand the four main types of distributed antenna systems so you can choose which will work best for your property. Consider your budget, as well as how important connecting to cell towers is to your business operations. Some companies can’t survive on Wi-Fi alone. For DAS solutions that work every time, contact our experts at Harris Communications.

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