1090MHz Cavity Filter – High-Rejection N-Type Bandpass Module for ADS-B Receivers, Aviation Tracking & High-Sensitivity Detection Systems

Product Description

In the crowded 1090MHz aviation band, weak ADS-B signals from distant aircraft are constantly threatened by strong adjacent interference, cellular base stations, and out-of-band spurious emissions. The 1090MHz Cavity Filter is engineered to safeguard sensitive aviation receivers by delivering an exceptional ≥75dB out-of-band rejection while maintaining an ultra-low ≤0.5dB insertion loss. This precise signal purification prevents receiver desensitization and maximizes the capture of vital flight tracking data. Housed in a rugged black aluminum enclosure with a versatile N-Male+N-Female interface, it provides a highly reliable, drop-in solution for indoor ADS-B receiver integration, aircraft signal antennas, and high-sensitivity aviation wireless-detection devices.

Typical Applications

• ADS-B Receiving Systems: Block strong local interference to improve aircraft tracking range and data accuracy.
• Aircraft Signal Antennas: Protect the receiver front-end from high-power adjacent transmitters near airports.
• High-Sensitivity Aviation Devices: Ensure clean spectrum for critical flight monitoring and detection equipment.
• Aviation RF Testing: Provide precise bandpass filtering for laboratory validation and field diagnostics.
• Airport Ground Infrastructure: Suppress spurious emissions in dense communication environments.
• Flight Tracking Networks: Enhance signal-to-noise ratio for multi-receiver distributed tracking systems.

Technical Specifications

Key Advantages

Exceptional Out-of-Band Interference Blocking. Featuring ≥75dB rejection, this cavity filter heavily attenuates strong adjacent signals and spurious emissions, protecting sensitive aviation receiver front-ends from saturation and missed message decodes.

Ultra-Low Insertion Loss and Excellent Matching. With ≤0.5dB insertion loss and a VSWR ≤1.2, the filter ensures minimal attenuation of weak ADS-B signals, preserving critical receiver sensitivity and extending aircraft tracking range.

Rugged Construction and Flexible Interfaces. The 97.5*68.5*36mm painted black aluminum chassis offers excellent mechanical durability and shielding. The N-Male+N-Female connector configuration simplifies integration into various indoor aviation receiver setups.

What's in the Box

• 1 × 1090MHz Cavity Filter