Why Choose This Product
Optimized for high-capacity Distributed Antenna Systems (DAS) and modern In-Building Solutions (IBS), this 698-2700MHz 4×1 Hybrid Combiner provides heavy-duty power routing across all major cellular frequencies. It effortlessly blends multi-carrier GSM, 3G, and 4G LTE signals into a unified distribution path with an excellent VSWR of ≤1.25. Traditional 4×4 hybrid matrices require complex external cabling and multiple dummy loads when a single distribution line is needed; this specialized 4-In 1-Out architecture integrates the necessary high-power internal termination loads directly into the chassis. Housed in a ruggedized, weather-resistant enclosure with premium DIN Female (7/16 DIN) interfaces, it supports up to 300W of average power and a 1000W peak threshold while maintaining strict port isolation (≥23dB).
Electrical Specifications
| Parameters | Specifications |
|---|---|
| Frequency Range | 698 – 2700 MHz (Broadband Sub-3GHz) |
| Coupling Value | 6.0 dB (4×4 Hybrid Matrix / Coupler) |
| Insertion Loss | ≤ 1.0 dB |
| Port Isolation | ≥ 23 dB |
| VSWR | ≤ 1.25 (Excellent Impedance Match) |
| Passive Intermodulation (PIM3) | briefs ≤ -150 dBc (@ 2 * 43 dBm) / Customizable |
| Average Power (Max.) | 300 W |
| Peak Power (Max.) | 1000 W (High Peak Power Handling) |
| Characteristic Impedance | 50 Ω |
| Connector Type | DIN Female (7/16 DIN) |
| Environmental Application | Indoor & Outdoor Capable |
FAQ
- What is the primary function of a 4-In 1-Out hybrid coupler?
- This hybrid coupler serves as a multi-port RF signal combiner. It takes up to four completely independent wireless signal sources (such as different cellular operators, different frequency bands, or distinct base station sectors) and merges them into a single physical coaxial line leading out to an antenna distribution network.
- Why does this specialized 4-In 1-Out model not require external dummy loads?
- In standard 4×4 hybrid couplers, any output port that isn’t connected to an antenna must be manually terminated with an external 50Ω load to handle rejected power. This specialized 4-In 1-Out integrated design contains three high-power internal dummy loads built right into the housing. This eliminates extra component costs, minimizes passive intermodulation risks from extra adapters, and significantly reduces the equipment footprint in telecom racks.
- Why is the coupling value listed as 6dB for this combiner?
- By the laws of RF physics, splitting or combining a signal four ways equally divides the power into fourths, which results in a mandatory theoretical mathematical loss of 6.0dB ($1/4$ of the original power). The specified 6dB coupling value demonstrates extreme hardware efficiency, adding negligible true internal trace dissipation, while the total additional hardware insertion loss is kept under ≤1.0dB.
- How does the -150dBc PIM3 rating safeguard network performance?
- A Passive Intermodulation rating of ≤-150dBc ensures that when multiple high-power multi-carrier signals pass through the coupler concurrently, the hardware does not generate internal harmonic noise. This maintains high receiver uplink sensitivity, prevents dropped calls, and allows the network to operate at its absolute maximum data capacity.
- What are the operational benefits of the DIN Female interfaces on this unit?
- DIN Female (7/16 DIN) connectors are engineered for high-power macro cellular infrastructure. Their large, threaded mechanical interface provides superior structural strength and a massive electrical contact surface area. This architecture allows the device to reliably handle 300W average and 1000W peak power without risk of thermal breakdown, ensuring stable electrical performance in both indoor and outdoor environments.
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Hybrid Coupler
