Search for a Class-F RF PA. (Follow up HW#12)

cont from 2-stage RF PA Driver 

Find a class-F for this schematic

optimized (unfortunately,  champion is class AB,

class-F is not viable because it was blowing through the 1.5× Vds limit)

left not a genuine Class-F (also not viable), center AB a champion by refinement,

 right AB the best power/efficiency point

artifact

conclusion: class-F Not Found

Adapt to a new topology to breed Class-F ( OK, got it, but not worth it. Class-E is even better)

old topology is not viable. (transformer 1:1)

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我用 Claude cowork 找了滿足條件的 Class-F (true, but blew)

corrected, artifact

fitness function disfavors class-F (HD3 floor constraint wants it be class-AB), relaxed during search

class-F winner repaired

note: the two solutions are within the same basin

s11, s22 repair, corrected vs. dashboard