Autotune filter for mitigation of interference and other EMS threats

US Army operations rely on air and missile defense (AMD) systems to provide fully integrated low altitude air defense against cruise missiles, unmanned aerial vehicles, and other low flying fixed and rotary wing targets, as well as tactical ballistic nuclear, biological and chemical warheads. Metamagnetics Inc. proposes to develop a cost-effective and compact auto-tune filter (ATF) that rapidly and dynamically adapts to eliminate electromagnetic threats in AMD systems. When auto-tune filters are placed before and after a low-noise amplifier (LNA) in the receive chain of a radar receiver co-site interference, jamming, and antenna mismatch signals are automatically filtered allowing the RF signal of interest to be extracted from the clutter.