Active L-band combiner 4ch N-type is a high-performance RF combining unit engineered for professional L-band infrastructures operating in the 950–2150 MHz range. It merges up to four independent L-band input signals into a single, clean, and stable output, preserving linearity, minimizing distortion, and ensuring uniform amplitude response across the entire band. With 30 dB port isolation and controlled flatness of 3 dB, it supports multi-carrier and wideband applications that require strict signal integrity.
This active L-band RF power combiner provides 0–1 dB gain, compensating path and connector losses to deliver consistent output power to downstream receivers, demodulators, or analyzers. The reinforced N-type 50-ohm RF interface ensures excellent impedance matching with input return loss of −19 dB and output return loss of −18 dB. Such performance makes the Active L-band combiner 4ch N-type ideal for broadcast uplinks, satellite IF processing, redundancy systems, and RF headend installations where signal purity and stability are critical.
✅ High-performance multi-channel L-band combining
This active 4-channel L-band combiner provides stable, low-distortion combining of multiple signals with 0–1 dB gain across 950–2150 MHz. It ensures controlled amplitude response when merging multiple carriers or wideband IF signals. The result is a reliable, broadband output suitable for professional uplink and distribution systems.
✅ 30 dB port isolation for clean multi-carrier operation
The combiner maintains 30 dB isolation between all input channels, preventing interference, overload transfer, or spectral contamination between ports. This is essential for multi-carrier satellite systems, IF monitoring racks, and communication infrastructures where independent signals must remain isolated during combining.
✅ High linearity with P1dB output +17 dB
With an output compression point of +17 dB, the combiner supports demanding RF environments where multiple carriers must be preserved without distortion. Its strong linearity performance ensures stable operation in high-level IF chains and protects downstream equipment from unwanted nonlinear artifacts.
🛠️ Designed for integration into L-band routing, redundancy, and distribution systems The Active L-band combiner 4ch N-type is built for reliable signal combining in monitoring, contribution, or uplink processing chains. Its gain stability and port isolation support complex RF architectures with multiple modems, receivers, or converters. The active amplification stage preserves original spectrum characteristics, making the unit suitable for precision broadcast and satellite infrastructures.
🛒 Suitable for teleports, RF laboratories, satellite gateways, and communication centers The Active L-band combiner 4ch N-type provides consistent multi-channel processing with robust mechanical construction and precise RF behavior. It enables long-term stability, reduced maintenance, and predictable performance in large-scale multi-path systems.
📌 Key features
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Active L-band RF combiner 4→1 with N-type 50-ohm connectors
This device merges four independent L-band signals into a single output while maintaining excellent impedance matching and minimal distortion. It is optimized for broadband 950–2150 MHz infrastructures requiring clean, stable combining performance.
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High-isolation RF combining unit with 30 dB channel separation
The combiner isolates each input, preventing coupling or interference between signals in multi-carrier environments. This isolation improves system linearity and ensures that variations in one path do not impact others, which is critical for satellite gateways and broadcast uplinks.
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0–1 dB gain active design for stable output levels
Its active architecture compensates combining losses and maintains predictable output across the entire frequency range. This enables clean, level-consistent output signals even when multiple inputs with different levels are used.
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High-output P1dB +17 dB for demanding RF environments
The strong linearity performance allows operation under higher RF load conditions, supporting multi-carrier, broadband, and high-level IF chains. This ensures that distortion and compression remain minimal, protecting downstream demodulators and analyzers.
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Uniform amplitude response with 3 dB flatness across 950–2150 MHz
Predictable amplitude behavior makes the combiner suitable for systems requiring precise signal shaping and minimal in-band ripple. This is valuable in broadcast IF processing, spectrum monitoring, and RF measurement applications.
⚙️ Main functions
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Active broadband signal combining for multi-channel L-band systems
The device merges up to four independent L-band inputs into a single broadband output with minimal distortion. Its active gain compensation ensures consistent output levels even when input powers differ. This enables stable, synchronized operation in complex RF distribution and uplink environments.
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Interference suppression and channel isolation in multi-carrier operation
Thanks to 30 dB isolation, the combiner prevents signal leakage, overload transfer, and modulation imprinting between input channels. This helps maintain spectral purity and minimizes unwanted interactions between carriers in high-density satellite or broadcast systems. The result is a cleaner combined signal for downstream processing.
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High-linearity output with P1dB +17 dB for reliable RF chain performance
The combiner supports high-level IF chains without compression, preserving waveform integrity even under heavy loading. Its strong output stage ensures linear behavior, essential for multi-carrier, multi-service environments. This makes the device suitable for infrastructures where precise modulation quality must be maintained.
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Impedance matching and low reflection for accurate signal propagation
With −19 dB input return loss and −18 dB output return loss, the unit maintains proper impedance continuity through the entire RF chain. This reduces standing wave effects and improves overall signal efficiency. Such performance contributes to lower distortion and more accurate amplitude/phase distribution.
🧩 Applications
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Satellite communication gateways and IF combining systems
The combiner is ideal for merging multiple modem, IRD, or uplink chain outputs into one IF path. This is essential for VSAT hubs, teleports, and earth stations where signals must be combined before routing or amplification. High isolation ensures interference-free operation in multi-carrier systems.
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Broadcast headends and contribution networks
Used for combining several receivers, decoders, or contribution feeds into a single processing path, it stabilizes signal distribution and ensures predictable output behavior. Its active gain enables proper level management in dynamic broadcast architectures.
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RF laboratories, monitoring centers, and measurement setups
The combiner supports test benches and monitoring racks requiring multiple RF sources to be merged cleanly into a single analyzer or receiver. Its low reflection, stable gain, and predictable amplitude response improve measurement repeatability and system calibration accuracy.
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Redundancy switching and multi-path RF infrastructures
In systems with backup modems, parallel encoders, or redundant uplink paths, the combiner enables unified routing of multiple sources to a shared processing chain. This enhances system flexibility without requiring complex switching architectures.
💡 Why you should buy from us❓
- 1.5 years warranty
- 7 years after-sales support
- Remote support team of engineers
- Discount program for regular customers 🎁
💬 Contact Us
For additional details or assistance regarding the Active L-band combiner 4ch N-type, feel free to contact our team. We provide professional consultation and aftersales support to help with installation and system integration.
