Bandpass filter 1.3 GHz

Bandpass filter 1.3 GHz is a narrowband RF component engineered for stable operation within 1240–1300 MHz, providing precise selection of the desired spectrum around the 1270 MHz center frequency. This filter ensures minimal signal distortion and low insertion loss, enabling clean passband transmission for microwave RF systems and L-band infrastructures. Its optimized frequency response is suited for high-selectivity filtering applications where accurate band limitation is required.

Designed with 75-ohm F-type connectors, the filter integrates seamlessly into microwave paths and broadcast environments that rely on coaxial infrastructure. The non-hermetic compact case simplifies installation while maintaining electrical stability across the operating band. High suppression levels — 45 dB at 1190 MHz and 31 dB at 1350 MHz — ensure effective attenuation of out-of-band interference, protecting receivers and improving link performance.

✅ Precision filtering for narrowband RF systems

This 1.3 GHz bandpass filter provides accurate band limitation for 1240–1300 MHz systems, ensuring only the required spectral portion passes through. The tight response makes it an ideal component for paths requiring high signal purity and controlled bandwidth shaping. Its stable center frequency of 1270 MHz contributes to predictable performance in demanding RF applications.

✅ High rejection levels for interference protection

The filter ensures strong suppression outside the passband, delivering 45 dB attenuation at 1190 MHz and 31 dB at 1350 MHz. This minimizes unwanted energy that may degrade system performance or overload sensitive equipment. Such selectivity enhances reliability in environments with high spectral congestion.

✅ Low-loss design for improved signal integrity

With insertion loss limited to 0.6 dB and frequency response flatness within 0.6 dB, the filter preserves the integrity of the desired signal. These characteristics are essential for microwave links, L-band processing chains, and systems operating with tight SNR constraints. The result is a clean, stable transmission path with minimal degradation.

🛠️ This bandpass filter is designed for integration into L-band, microwave, and 1.3 GHz communication chains requiring high precision and stable filtering. Its 75-ohm impedance and F-type interface allow seamless installation in standard coaxial networks used in broadcast, measurement, and RF distribution systems. The filter provides consistent electrical characteristics suitable for long-term continuous operation.

🛒 The compact design and reliable passband characteristics make this filter ideal for OEM manufacturers, RF integrators, and operators of microwave systems. It can be used as a modular component in receiver chains, repeater nodes, and specialized telecom equipment. Its predictable selectivity and low-loss architecture offer dependable performance in professional installations.

📌 Key features

• 1.3 GHz narrowband bandpass RF filter

This precision-tuned 1240–1300 MHz filter provides a controlled passband centered at 1270 MHz, ensuring accurate spectral selection for microwave and L-band systems. Its narrowband response supports high-quality RF transmission in communication links.

• Low-loss 75-ohm coaxial design with F-type ports

The unit offers insertion loss of only 0.6 dB, minimizing attenuation and maintaining strong signal levels across the passband. The 75-ohm F-type connectors ensure compatibility with common coaxial infrastructures in broadcasting and microwave distribution.

• High out-of-band suppression RF filter

With 45 dB attenuation at 1190 MHz and 31 dB at 1350 MHz, the filter effectively eliminates unwanted adjacent signals. This superior rejection enhances system stability and prevents interference in dense RF environments.

• Stable frequency response with low ripple

The amplitude-frequency variation does not exceed 0.6 dB, providing consistent passband performance. This stability ensures reliable signal integrity for systems requiring high precision and low noise.

• Microwave-grade filter for L-band and 1.3 GHz systems

Its tuned cavity structure and optimized impedance provide reliable operation in telecom, broadcast, and measurement chains. The compact non-hermetic housing supports integration into rack, indoor, or space-limited installations.

⚙️ Main functions

• Passband selection for 1240–1300 MHz systems

The filter allows only the desired frequency range to pass, ensuring narrowband operation in 1.3 GHz microwave paths. This improves signal clarity and minimizes unwanted spectral components.

• Suppression of out-of-band interference

High rejection levels prevent strong nearby signals from entering the receiver or subsequent stages. This maintains system stability in high-interference environments.

• Low-loss RF transmission within the passband

The 0.6 dB insertion loss ensures efficient signal transfer and minimal energy loss. This helps preserve signal-to-noise ratio in sensitive microwave systems.

• Impedance matching for 75-ohm lines

The filter maintains correct impedance throughout the chain, reducing reflections and improving transmission efficiency. This ensures consistent performance in coaxial networks.

• Signal conditioning in microwave RF chains

The filter shapes and controls the signal spectrum, preparing it for processing, amplification, or downconversion. This function is essential in complex multi-link communication systems.

🧩 Applications

• Microwave and L-band communication paths

Used to preserve signal integrity in 1.3 GHz links and L-band RF systems requiring narrowband filtering. It supports stable operation in broadcast, telecom, and transport networks.

• Interference suppression in RF front-ends

Effective at eliminating unwanted near-band signals that may overload or interfere with receiver chains. Ideal for high-density spectral environments.

• HAM radio 23 cm band filtering

Suitable for amateur radio applications requiring precise filtering around the 1270 MHz band. Ensures clean transmission and reception in competitive or experimental setups.

• Broadcast and measurement equipment

Useful in RF laboratories, test benches, and professional broadcasting infrastructure. The filter provides predictable behavior required for precise signal analysis.

• OEM integration in telecom devices

Can be embedded into communication, telemetry, or repeater modules. Its compact size simplifies mechanical integration into larger systems.

💡 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 Bandpass filter 1.3 GHz, feel free to contact our team. We provide professional consultation and aftersales support to help with installation and system integration.