Why Choose This Product
The 698-2700MHz 4×4 Hybrid Combiner is a professional-grade passive component built to anchor multi-operator and neutral-host wireless infrastructure within complex building architectures. Spanning a broadband spectrum from 698MHz to 2700MHz, it seamlessly processes major global cellular bands including GSM, UMTS, and high-speed 4G LTE. The matrix delivers a premium -160dBc passive intermodulation (PIM) profile, protecting receiver bands from harmful background noise and maintaining maximum data rates. With a robust power capacity of 200W per port, a maximum insertion loss of ≤7.5dB (including the theoretical split), and high port-to-port isolation (≥20dB), this matrix provides identical signal distribution to multiple floors or sectors. It is equipped with modern, compact 4.3-10 Female interfaces to ensure long-term mechanical and electrical stability in heavy-traffic telecom environments.
Electrical Specifications
| Parameters | Specifications |
|---|---|
| Frequency Range | 698 – 2700 MHz (Broadband Sub-3GHz) |
| Insertion Loss | ≤ 7.5 dB (Including Theoretical Split Loss) |
| Port Isolation | ≥ 20 dB |
| VSWR | ≤ 1.3 |
| Passive Intermodulation (PIM3) | briefs ≤ -160 dBc (@ 2 * 43 dBm) |
| Average Power | 200 W (High-Power Capacity) |
| Nominal Impedance | 50 Ω |
| Connector Type | 4.3-10 Female |
FAQ
- How does a 4×4 hybrid coupler distribute signals within an IBS network?
- A 4×4 hybrid matrix functions as a multi-port combiner and splitter. It allows up to four independent RF inputs (such as different operators or wireless bands) to merge inside the unit. The internal stripline architecture then splits this combined power equally across four independent output ports, ensuring that every connected antenna zone broadcasts all four input signals simultaneously.
- Why does the specification sheet list the insertion loss as ≤7.5dB?
- In a 4×4 hybrid matrix, splitting a single signal four ways incurs a mandatory theoretical split loss of 6.0dB based on the laws of physics ($1/4$ power per port). The listed total insertion loss of ≤7.5dB means the hardware itself introduces less than 1.5dB of true internal dissipative and connection loss, representing high routing efficiency across the full 698-2700MHz band.
- Why is a -160dBc PIM rating critical for indoor wireless infrastructure?
- In-Building Solutions (IBS) often combine multiple high-power transmitters into shared lines. Passive Intermodulation (PIM) occurs when these signals mix and generate harmonic interference that desensitizes receiver ports. A premium rating of -160dBc ensures the coupler generates virtually no harmonic noise, keeping the network running at peak capacity with clean signal paths.
- What should be done if an installation uses fewer than 4 inputs or 4 outputs?
- To maintain the rated port-to-port isolation (≥20dB), uniform signal balance, and a low VSWR (≤1.3), any unused input or output port must be terminated with a high-quality 50Ω dummy load. The attached load must be rated to handle the respective power distributed through that branch of the matrix.
- What makes 4.3-10 Female connectors better than traditional interfaces for this matrix?
- The 4.3-10 connector interface is specifically engineered to limit PIM in modern cellular infrastructure. By separating the electrical contact plane from the mechanical torque mechanism, it ensures that PIM performance remains completely stable even if the connected cables experience physical stress or vibration during installation, all while featuring a smaller footprint than legacy 7/16 DIN connectors.
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Hybrid Coupler
