Dual-polarized parabolic antennas can be useful in fixed cellular installations where directional gain and compatible multiple-antenna radio configurations are required.
However, choosing a dual-polarized antenna is not simply a matter of connecting two cables to a modem. The antenna, RF ports, cables, connectors, and CPE configuration must work together as a complete system.
Here are the main integration points to check before deployment.
1. Map the CPE’s RF Ports First
Start with the CPE or modem datasheet.
Identify the number of external antenna ports and the function of each port. Depending on the equipment, ports may support different receive/transmit chains, diversity, or MIMO operation.
A dual-polarized antenna typically provides two orthogonal linear polarization paths, commonly horizontal and vertical. This can be suitable for a compatible dual-polarized radio configuration.
However, a two-feed antenna should not automatically be assumed to satisfy a 4×4 MIMO requirement. Confirm the radio architecture and the complete antenna arrangement before ordering.
2. Match the Antenna Frequency to the Actual Network
The antenna’s operating range must include the frequencies used by the cellular network and supported by the CPE.
RFLink’s current dual-polarized parabolic antenna models are specified for 1710–4200 MHz. This range can support compatible systems operating within it, but it should not be assumed to cover every cellular band in every market.
Check the modem’s supported LTE and 5G NR bands, the deployment location, and the actual operating frequency before selecting a model.
3. Preserve the Intended H/V Polarization
Horizontal and vertical polarization labels are useful only when the installation preserves the intended orientation.
Follow the antenna’s documentation when mounting the feed assembly, connecting RF cables, and positioning the reflector. If the product identifies the two paths separately, retain those labels throughout installation and testing.
Incorrect polarization handling can prevent the antenna and radio from operating as intended. The exact impact depends on the radio system, antenna design, and installation geometry.
4. Account for RF Cable Loss
A high-gain antenna can lose part of its practical advantage if the RF cable introduces excessive attenuation.
Cable loss depends on frequency, cable construction, and length. Higher-frequency signals can be particularly sensitive to feeder loss.
For this reason, determine the cable route before choosing the installation layout. Where practical, keep RF cable runs short and select cable with suitable attenuation and environmental characteristics.
For dual-path systems, plan both cable runs together and follow the radio manufacturer’s recommendations for cable type and configuration.
5. Verify Connectors and Outdoor Connections
Confirm that the antenna and CPE use compatible RF connector interfaces. Avoid assuming that physically similar connectors are interchangeable.
For outdoor installations, protect the connection according to the equipment manufacturer’s instructions. Cable strain relief, appropriate routing, and suitable weather protection can help reduce installation-related failures.
Do not rely on an adapter or improvised sealing method to compensate for an incompatible interface.
6. Align the Dish and Validate the Complete System
A parabolic antenna is directional, so its alignment affects the received and transmitted link.
After mounting, aim the antenna toward the intended serving direction using the appropriate installation procedure. Then evaluate the connection with the actual radio and network.
Where available, record RSRP, RSRQ, SINR, and throughput. These measurements describe different aspects of the link and should be considered together rather than relying on signal bars alone.
If performance is poor, check the frequency, port mapping, cable loss, polarization, alignment, and network configuration before concluding that the antenna gain is insufficient.
7. Prepare the Right Information for Your Antenna Supplier
For a new CPE integration project, prepare the following information:
- CPE or modem model
- Supported LTE and 5G NR bands
- Number and function of RF ports
- Required MIMO configuration
- Antenna connector interfaces
- Required cable type and length
- Installation environment
- Mechanical mounting constraints
- Target performance and test conditions
These details help the antenna supplier evaluate whether a standard model is appropriate or whether a project-specific configuration should be considered.
Discuss Your Saudi 4G/5G Antenna Requirements
For compatible fixed cellular systems, the right dual-polarized parabolic antenna can be an important part of the RF design. Successful integration still depends on the radio, cable, mounting, and network configuration working together.
Review RFLink’s parabolic antenna solutions for Saudi cellular projects and provide your CPE model, frequency requirements, RF-port arrangement, and installation details for a more informed product evaluation.
