SBIR-STTR Award

The Signal Isolation w/ Frequency Tuning Filter, or SIFTer, is a technique for protecting a wide variety of EW and C4ISR receivers from the effects of unintentional (friendly) and intentional (enemy) jamming and interference. SIFTer is capable of rejecting broadband and narrowband interference without the requirement for a reference sample of the interference source.

Keywords:
Anti-Jam, Co-Site Interference, Bandpass Filter, Adaptive Filter, Noise Cancellation, Cognitive Radios

TeraSys Signal Isolating, Frequency Tuning Filter (SIFTer) is a new approach to RF Interference Mitigation (RIM) that filters wideband noise and extracts desired radio signals from strong RF interference, without needing a reference copy of the interference. SIFTer combines a next-generation digitally-tunable bandpass filter (BPF) architecture with new DSP signal extraction techniques to break free of the engineering tradeoffs associated with conventional filter design. In Phase I, TeraSys demonstrated the feasibility of SIFTer through modeling and simulation, showing that SIFTer is able to extract specified waveforms from noise and meet the Armys size, weight and power-handling targets. In Phase II, TeraSys will develop a hardware prototype less than 0.10 cubic feet in size and demonstrate the utility and advantages of SIFTer in specific Army applications, setting the stage for Phase III transition through programs such as PdM EWIs RF Interference Mitigation (RIM). TeraSys will also explore avenues for commercialization and licensing of the SIFTer technology to meet the large and growing commercial market demand for improved methods of dealing with wireless interference.