But can this still be done in the digital age? It’s something [Windytan] has looked into, as she reconstructs images using leakage from HDMI cables. The tale starts with a mystery RF noise ...
All digital lowpass delta-sigma modulator (+ its digital up-converter) tune to fmax = 9 MHz The top_fpga.vhd contains: - A direct-digital-frequency synthesizer - A channel filter, Fpass = 9 MHz, Fstop ...