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Boosted by cstanhope@social.coop ("Your weary 'net denizen"):
gsuberland@chaos.social ("Graham Sutherland / Polynomial") wrote:

meme. KEEP DOING IMPEDANCE CONTROL EVERYTHING IS A TRANSMISSION LINE. YEARS OF DIE SHRINKS and now NOTHING is lumped length. Want to go fast? We have a tool for that, it’s called a FIELD SOLVER. “Yes please let me transfer 800Gbps down a passive copper cable. Please let me run 8000MT/s DDR5 with open slots. Please transmit my files over the air using 60GHz radio waves.” - Statements we could only dream of a decade ago. LOOK at what Electronics Engineers have been achieving with little more than some copper foil glued to fiberglass and a fancy calculator. Images with exclamation marks under them. Left shows tabbed routing for controlled impedance. Middle shows an 800G QSFP-DD DR8+ network module, and the equations for Hammerstand and Cannonball-Huray foil roughness loss modelling. Right shows PAM4 and DB-PAM4 eye diagrams at 90, 96, and 100Gbps. They have harnessed the power of sand and metal to scream through the ether.