Fig. 5
From: Rapid global antenna design by simplex regressors and multi-resolution simulations

Operating and performance parameters: (a) dual-band antenna of Fig. 2(b) (f = [f1 f2]T – resonant frequencies; l = [l1 l2]T – reflection at f1 and f2) (b) quasi-Yagi antenna (cf. Sect. Algorithm verification and benchmarking) (f = f1, l = [l1 l2]T – reflection at f1 and gain at its maximum).