3 ms·
Two stages of quadrature downconvertion: input -> 64 GHz -> 8 GHz -> A/D samplers (x16). Super Quadrodyne? A decent understanding of SDR receivers is all you
by topspin 4y ago
Two stages of quadrature downconvertion: input -> 64 GHz -> 8 GHz -> A/D samplers (x16).
Super Quadrodyne?
A decent understanding of SDR receivers is all you need to understand how this works. Same basic ideas, just one or two orders of magnitude faster. Incredible RF engineering; An Indium Phosphide (InP) stage feeds a Silicon-Germanium (SiGe) stage feeds about 9kg of custom CMOS DSP + high speed memory. A bargain at less than $1.5 million.