On the impressive weaponry. is 28nm tech really needed? I mean, I thought F22 was designed and built almost two decades ago, right? (I don’t know much about military weapons).
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There is a past post on that. I’ll quote it.
28nm. Much of the Chinese military chip production appears to be 40nm and higher. Always remember that the smaller the nm is, the more susceptible the chip is to EM interference, EMP, cosmic rays in the higher atmosphere, and so on, so there is a limit to how far any military will accept smaller and smaller nm. This is why going to another chip making technology like graphene or going to 3D stacking, might be a more attractive idea.
Remember this picture? Note that "20" on the third item should stand for J-20, while the others are for J-16 and J-10B. It also describes the modules used for the "-20" radar uses 3D MCM. The infographic describes three generations of AESA radars, starting with the J-10B at Gen 1.5. The four digits represent the number of elements so the J-10B is 12XX, the J-16 at 1760, and the J-20 at 1856.
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