Why Choose This Product
Optimized for neutral-host Distributed Antenna Systems (DAS) and multi-operator co-location sites, this 698-3800MHz 4×4 Hybrid Coupler is a future-proof routing matrix for next-generation cellular coverage. It spans from low-band 700MHz up to the critical 3.8GHz mid-band (C-band), providing unified support for legacy 4G LTE and advanced 5G NR networks. Built to maintain absolute signal purity, it delivers an ultra-low PIM profile of ≤-160dBc, preventing harmonic noise from desensitizing receiver paths. The unit provides a balanced 6.1dB split across all ports with high isolation (≥23dB) and handles 300W of average power. Housed in a ruggedized, weather-resistant enclosure with compact 4.3-10 Female interfaces, it ensures stable and efficient performance for high-density macro and small cell deployments.
Electrical Specifications
| Parameters | Specifications |
|---|---|
| Frequency Range | 698 – 3800 MHz (5G Sub-6GHz Middle Band) |
| Coupling Value | 6.1 dB (4×4 Hybrid Matrix / Coupler) |
| Coupling Accuracy | briefs ± 1.4 dB |
| Port Isolation | ≥ 23 dB |
| VSWR | ≤ 1.25 (@ 690-2700 MHz) ; ≤ 1.30 (@ 2700-3800 MHz) |
| Passive Intermodulation (PIM3) | briefs ≤ -160 dBc (@ 2 * 43 dBm, tested at 900 / 1800 / 2600 MHz) |
| Average Power | 300 W (High-Power Capacity) |
| Nominal Impedance | 50 Ω |
| Connector Type | 4.3-10 Female |
| Color | Light Grey or Black Paint Optional |
FAQ
- What is the primary benefit of the 698-3800MHz coverage for a 4×4 combiner?
- While standard combiners only cover up to 2700MHz, this model extends its bandwidth to 3800MHz. This ultra-wideband reach allows it to handle low-band cellular, mid-band LTE, and critical 5G sub-6GHz allocations (such as n77 and n78 C-band) simultaneously, allowing operators to deploy a single passive matrix that accommodates future network upgrades.
- Why is the coupling value rated at 6.1dB for this matrix?
- By the laws of RF physics, dividing a single input signal equally four ways results in a natural theoretical drop of 6.0dB per port ($1/4$ of the original power). The specified 6.1dB coupling value means the device adds a negligible 0.1dB of internal hardware dissipative loss, demonstrating exceptional signal-routing efficiency.
- How does a -160dBc PIM rating protect high-density venues?
- In high-traffic environments like airports, stadiums, and shopping malls, multiple high-power transmitters run concurrently through shared lines. An ultra-low Passive Intermodulation rating of ≤-160dBc ensures that the matrix will not generate disruptive harmonic interference, keeping the network noise floor low and maximizing user data throughput.
- What should be done with unused ports if I do not connect 4 inputs and 4 outputs?
- To maintain the rated port isolation (≥23dB) and low VSWR across the broadband spectrum, any unused input or output port must be terminated with a high-quality 50Ω dummy load. The load should be rated to handle the respective power output expected at that stage of the matrix.
- Why does this model utilize 4.3-10 Female connectors rather than N-type interfaces?
- The 4.3-10 connector interface is the industry standard for modern low-PIM telecommunications. By decoupling the electrical contact plane from the mechanical tightening mechanism, it ensures that PIM performance remains completely stable even under physical vibrations, cable movement, or wind loads, while offering a more compact footprint than legacy connectors.
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