The three main types of DAS antennas are ceiling (omnidirectional) antennas, wall mount (directional) antennas and log-periodic / LPDA (broadband directional) antennas. Each type serves a different role in a distributed antenna system depending on the coverage area, building layout and frequency requirements of the project.
Ceiling Antennas
Ceiling DAS antennas are omnidirectional antennas mounted above or below a drop ceiling to distribute wireless signal evenly across an open floor area. They are the most common antenna type in indoor DAS deployments because they provide 360-degree horizontal coverage from a single mounting point.
Typical ceiling DAS antennas cover frequency ranges from 330 MHz to 6000 MHz, supporting 4G LTE, 5G NR and legacy cellular bands. Gain is usually in the 3 to 6 dBi range. MIMO-capable models (2T2R and 4T4R configurations) support higher throughput for 5G NR indoor deployments.
Ceiling antennas are a good fit for:
- Open-plan offices and co-working spaces
- Retail floors and shopping centers
- Hospital wards and clinic areas
- Airport terminals and transit concourses
- Hotel lobbies and conference rooms
When selecting a ceiling antenna for a DAS project, confirm the frequency bands required by the carriers in the building, the ceiling height (which affects the effective coverage radius), the number of MIMO paths needed and the connector/cable interface that matches your DAS headend or remote unit.
Log Periodic Antennas
Log-periodic DAS antennas (also called LPDA antennas) are broadband directional antennas that cover a wide frequency range with consistent gain. In DAS installations, they are used as donor antennas to receive an outdoor macro cell signal and feed it into the DAS, or as directional antennas providing coverage along a specific axis inside large venues.
A typical log-periodic DAS antenna covers 617 to 6000 MHz or 698 to 6000 MHz with 10 to 11 dBi gain. The directional beam pattern focuses energy in one direction, which is useful when the signal source is in a known location (for donor use) or when coverage needs to reach a long distance in a single direction.
Log-periodic antennas are a good fit for:
- Donor antenna applications (outdoor signal pickup into the DAS)
- Long indoor corridors or tunnels where a directional beam is more efficient
- Large venue coverage where high-gain directional antennas reduce the total antenna count
- Multi-band deployments requiring a single wideband antenna instead of multiple narrowband antennas
Wall Mount Antennas
Wall mount DAS antennas are directional antennas installed on walls to push signal along hallways, corridors, tunnels or other elongated spaces. Their directional pattern concentrates coverage in a sector rather than spreading it in all directions, giving higher gain (typically 6 to 9 dBi) and longer reach per antenna compared to a ceiling omnidirectional unit.
Wall mount antennas cover frequency ranges from 330 MHz to 6000 MHz. 4T4R MIMO wall mount models (698-6000 MHz, 6-9 dBi) support combined 4G and 5G coverage in corridors and indoor areas where ceiling mounting is not practical.
Wall mount antennas are a good fit for:
- Hallways, corridors and walkways
- Parking structures and underground levels
- Stairwells and elevator lobbies
- Warehouses and distribution centers with high ceilings
- Tunnel and underground transit coverage
How to Choose a DAS Antenna Type
| Factor | Ceiling Omni | Wall Mount Directional | Log-Periodic / LPDA |
|---|---|---|---|
| Coverage pattern | 360° horizontal | Sector / directional | Directional, narrow beam |
| Typical gain | 3-6 dBi | 6-9 dBi | 10-11 dBi |
| Primary use in DAS | Open floor areas | Corridors, tunnels | Donor antenna, long-range feed |
| MIMO support | 2T2R, 4T4R models | 4T4R models | Typically single-port |
| Mounting | Ceiling tile, surface | Wall bracket | Pole, wall or mast |
Start by mapping the building layout: identify open areas (ceiling antennas), corridors and tunnels (wall mount), and donor or long-distance feed points (log-periodic). Then match the antenna frequency range and gain to the carriers and bands required for the DAS project.
Sourcing DAS Antennas for a Project
When sourcing DAS antennas for a deployment, confirm that the DAS antenna manufacturer can supply the exact frequency bands, gain range and form factors your project requires. Multi-band DAS projects often need ceiling, wall mount and LPDA antennas from the same indoor DAS antenna supplier to keep connector types, cable interfaces and RF performance consistent across the installation.
If the project has non-standard requirements (specific band combinations, custom housing, private-label branding or modified mounting hardware), check whether the supplier offers custom DAS antenna components and request samples before committing to a volume order.