I once saw an antenna design produced by GA that was very interesting. Met all the performance parameters in a very compact and easy to fabricate design. Extr

I once saw an antenna design produced by GA that was very interesting. Met all the performance parameters in a very compact and easy to fabricate design. Extremely counter-intuitive design -- it looked like a mangled paper clip -- but it worked in simulation and in real life. People have also had good results using GA to optimize Yagi-Uda arrays. In that case, it is very easy to map design parameters onto a "gene vector" in a way that is well-understood and such that it yields an understandable result. But that is really just a search problem, so maybe other algorithms would do as well.