L-band LNA with filter is low-noise amplifier which is designed for increasing the sensitivity of the satellite communication and navigation systems receivers, for protecting from noise (which can be outside the operating frequency range of the amplifier) and it’s applied for low power signal amplifying without significantly decreasing the signal-to-noise ratio by minimizing additional noise (the selective bandpass filter is installed at the input of the amplifier, which limits the bandwidth of the received signal).
The amplifier has 50 Ohm impedance and DC pass (optional).
L-band low-noise amplifier features a compact case which protects it from dust and moisture. It is tiny and reliable.
Filtered L-band Low-Noise Amplifier is designed for applications where enhanced selectivity and improved signal purity are required. Operating within 1503–1725 MHz, this amplifier incorporates an integrated bandpass filter at the input, which suppresses out-of-band interference and prevents unwanted signals from entering the amplification chain. This selective front-end filtering significantly improves the signal-to-noise ratio (SNR), providing clean and stable amplification for SATCOM, GNSS, telemetry, and professional navigation receivers.
With 30 dB gain, ±1 dB gain flatness, and 2.6 dB noise figure, the Filtered L-band Low-Noise Amplifier maintains stable, predictable performance across the entire filtered L-band range. It supports 50 Ohm impedance, optional DC pass, and high linearity with +20 dBm P1dB output. The enclosure is compact, dust- and moisture-protected, engineered for 100% non-condensing humidity and wide temperature tolerance. The +7.5…+34 V voltage flexibility and low 2 W power consumption allow seamless integration into diverse RF systems, including portable, embedded, and harsh-environment installations.
✅ Integrated bandpass filter for improved interference rejection
The amplifier’s built-in filter eliminates unwanted signals outside the 1503–1725 MHz band, ensuring clean input conditions for high-sensitivity satellite and navigation receivers. This selective filtering enhances overall signal clarity and prevents overload from broadband ambient noise.
✅ High stability with ±1 dB gain flatness and strong 30 dB amplification
The narrowband architecture ensures consistent amplitude characteristics, vital for systems requiring precise signal level control. Stable gain performance enhances demodulation quality and improves receiver sensitivity under variable signal conditions.
✅ Designed for reliability in harsh RF environments
A durable enclosure protects the amplifier from dust, moisture, and extreme temperatures, supporting dependable outdoor and industrial operation. Its wide operational voltage range enables integration into mobile, remote, and energy-limited systems.
🛠️ Engineered for selective, low-noise L-band signal enhancement The amplifier combines narrowband filtering with low-noise amplification, ensuring clean, interference-free operation for GNSS, SATCOM, and telemetry networks. The robust linear output stage and optimized impedance matching contribute to a stable high-performance RF front end.
🛒 Ideal for precision navigation, satellite monitoring and protected RF links Due to its enhanced selectivity and high stability, the Filtered L-band Low-Noise Amplifier serves as a reliable component for systems requiring strict interference control, such as aviation navigation, mobile GNSS repeaters, secure communication links, and laboratory RF platforms.
📌 Key features
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Filtered L-band amplifier 1503–1725 MHz with integrated bandpass filter
The selective filtering stage suppresses all off-band interference, providing only the target L-band spectrum for amplification. This dramatically improves noise immunity in navigation, telemetry, and SATCOM chains.
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30 dB gain with ±1 dB flatness for narrowband signal precision
The highly consistent gain response ensures minimal amplitude distortion across the operating band. This contributes to stable demodulation and improved overall L-band reception accuracy.
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Low noise figure 2.6 dB with +20 dBm P1dB linear output
The amplifier maintains low internal noise while supporting strong output power for demanding RF systems. High linearity helps prevent compression under strong input conditions.
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Superior impedance matching: –19 dB input RL, –13 dB output RL
Accurate matching minimizes reflections and amplitude ripple within the system. This ensures stable system performance and predictable behavior under varying load conditions.
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Wide input voltage +7.5…+34 V and low 2 W consumption
The amplifier is compatible with mobile, battery-powered, and industrial systems requiring flexible power arrangements. Low consumption supports long-term autonomous operation.
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Rugged, moisture-resistant case 145×50×25 mm, 280 g
The robust mechanical construction allows installation in outdoor, marine, aviation, or industrial environments. It withstands 100% non-condensing humidity and extreme temperatures.
⚙️ Main functions
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Selective L-band amplification with out-of-band noise suppression
The integrated bandpass filter blocks unwanted spectral components before amplification, improving receiver sensitivity and protecting RF front ends from overload. This ensures clean signal processing even in high-interference regions.
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Maintenance of stable narrowband gain for sensitive RF systems
With ±1 dB flatness, the Filtered L-band Low-Noise Amplifier provides consistent amplification required for navigation, telemetry, and synchronized communication systems. This reduces demodulation errors and improves the reliability of precision RF links.
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Support for high linearity and clean output performance
The +20 dBm P1dB capability ensures that the amplifier maintains linear behavior under varying input levels. This prevents distortion and helps retain the accuracy of L-band modulation formats.
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Reliable performance in extreme outdoor and industrial conditions
The wide temperature range and humidity tolerance allow continuous operation in harsh environments. This makes the amplifier suitable for remote deployments, UAV systems, maritime navigation, and RF infrastructure subject to climatic stress.
🧩 Applications
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GNSS, GPS, GLONASS and Galileo navigation systems
The Filtered L-band Low-Noise Amplifier enhances navigation accuracy by eliminating out-of-band noise and amplifying only the desired L-band frequencies. Its high stability supports precise tracking even under weak-signal conditions.
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Satellite communication receivers and protected L-band RF links
By suppressing ambient interference and providing stable gain, the amplifier is ideal for SATCOM monitoring, telemetry uplinks, and L-band downlink conditioning. It improves SNR and protects sensitive receivers.
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Aviation, maritime and mobile positioning systems
Its rugged housing, extended temperature tolerance, and moisture resistance allow deployment in aircraft, ships, UAVs, and vehicle-mounted navigation terminals. The amplifier maintains high performance despite environmental fluctuations.
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Laboratory RF equipment, calibration and measurement systems
The narrowband, stable response, and predictable amplitude characteristics make the amplifier ideal for test benches, prototyping, filtering experiments, and RF measurement setups. Engineers benefit from its controlled spectral behavior and high repeatability.
💡 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 Filtered L-band Low-Noise Amplifier, feel free to contact our team. We provide professional consultation and aftersales support to help with installation and setup, ensuring you get the most out of your equipment.
