A Self Calibrating Ultra-Wideband Pulse Notching T

The Army is looking to develop and demonstrate a low-power, ultra-wideband (UWB) transmitter whose spectral content can be tailored to fit within certain limits, and avoid specific frequency bands. What is needed is a transmitter that can generate a waveform supporting 0.4 to 2.4 GHz with multiple programmed nulls in a pulse no longer than 50nS, along with an algorithm to compress the target return signal into an impulse. The average output power should support 5 mW, with -20 dBm/MHz. Bedford Signals proposes to solve this problem by combining our capabilities in UWB notching filters and cancellers with our wideband digital waveform generator. Specifically, we intend to modify our digital waveform generator to support notching a 50 nS pulse having a 2.5 GHz bandwidth. The proposed self calibrating hardware design is based on our existing DSP board, and is targeted at a production cost of $2500 each in volume.