Low Power Ultra-Wideband Digitizer

The objective is to design a low power 20 GHz digitizer using a Nyquist Folding front end based on technology developed at L-3 Communications and 5 GHz ADC module designed by CEI in a previously awarded Phase I SBIR. The baseline design is a single channel with a modulated sampling signal at 10 Gsps followed by a 5 GHz low pass filter and amplifier. This signal is then digitized with the 5 GHz TI-ADC module with an FPGA for equalization and signal reconstruction. A feasibility and requirements analysis that will be conducted in Phase I will determine if a second channel is necessary in order to unambiguously recover the original RF. For the two channel case, both channels will utilize a constant sampling signal, but with a different offset.