Product overview and engineering role
The SimtoLink 5G Sub-6 external antenna fills outdoor or high-gain gaps for eMBB and RedCap terminals on Sub-6 bands such as 3.3～5.0 GHz. On a CPE, an industrial gateway, or a video-backhaul box it can replace an internal patch and improve the link budget. The design watches MIMO element isolation, cross polarization, and bracket ground. With lightning protection and a feeder-loss calculation, commissioning is shorter on a weak campus, a port, or a mine.
SimtoLink recommends locking the approved band, gain and beamwidth, and the IP rating in the hardware specification, and reviewing the BOM together with the module RF-port impedance, cable loss, and the surge protector. Volume jobs can add polarization, a bracket, and an RF cable kit.
Reliability and field fit
A Sub-6 external antenna has to hold isolation between MIMO ports, bracket ground, and feeder phase match. Salt spray, vibration, and ultraviolet outdoors stress the seal and the hardware. On the coast, use a corrosion-resistant coating and a compliant connector.
Feeder insertion loss at these frequencies moves the link budget. After install, SimtoLink recommends rechecking VSWR and the related receive figures on every port, and logging pole azimuth, tilt, and cable length for later tuning and fault finding.
Key hardware parameters
RF and mechanical ratings below are a typical build, for selection and for a tender clause. Another approved band, polarization, MIMO count, or bracket is a separate request; ask SimtoLink for the hardware specification and the installation and commissioning guide. Order codes in the family can differ. The nameplate and the papers shipped with the antenna govern.
| Parameter | Specification | Notes |
|---|---|---|
| Band | 3300～5000 MHz (typical Sub-6) | National approval and the order govern |
| Gain | 6～12 dBi | Depends on the pattern and the order |
| VSWR | <2.5 | Typical frequencies |
| Polarization | ±45° cross linear polarization, and similar | A common MIMO arrangement |
| Impedance | 50 Ω | SMA, N-type, and similar |
| Power handling | Limited by the module and regulatory EIRP | Calculated per project |
| Ingress | IP65～IP67 | Outdoor build follows the specification |
| Feeder | Low-loss coax (for example LMR-240/400) | Hold down the equivalent millimeter-wave loss |
| Operating temperature | -40～85 ℃ | Typical industrial grade |
| Mounting | Pole / wall | Lightning protection and ground |
Typical applications
Four sites this antenna usually covers, for solution design and for judging the return:
5G industrial CPE
A stronger uplink for AGV control on the line and for HD vision backhaul.
Mobile enforcement and emergency communications
Temporary video collection, with a quick aim and tune toward a satellite or a base station.
Port and nearshore work
Fill-in coverage for quay cranes and driverless container trucks. Salt-spray hardware is optional.
Smart light poles and multi-use poles
Isolation and filtering are designed in when the pole is shared with Wi-Fi and broadcast.
Installation, grounding, and maintenance
- Land each antenna port on the labeled module RF port. A crossed pair collapses MIMO performance.
- Check pole strength and wind load. Waterproof the connectors and point the drain the way the maker specifies.
- Use low-loss feeder matched to the band. After install, measure VSWR on every port and keep the plot or a screenshot.
- Bond the feeder shield, the bracket, and the equipment-room earth to the same potential, and fit lightning protection to the local code.
- On a shared pole, check isolation from Wi-Fi and private-network antennas, and add a filter if the gap is too small.
Ordering, documentation, and support
The hardware specification, outline drawings, a wiring table, and an example project are available for this antenna. Volume orders can include a sample review and inspection at the factory. Warranty and calibration follow the contract and the papers packed with the unit.