1090MHz Double-Sided PCB ADS-B Filter

This ADS-B filter module is purpose-built for 1090 MHz Mode S transponder signal processing in SDR-based reception systems. It provides a narrow passband centred at 1090 ±15 MHz, with 1.5 dB insertion loss and 40 dB suppression at 50 MHz offset. The core construction uses a 1.6 mm thick double-sided PCB, fully tinned for uniform conductivity and corrosion resistance. Input and output are both 50 ohm matched and fitted with SMA-K (female) connectors. Rated for up to 13 dBm (20 mW) RF input, it incorporates broad copper heat-sinking regions to manage thermal load and improve longevity. Its one-piece moulded housing ensures mechanical robustness and ease of integration into custom enclosures or rack-mounted ground stations.