Kramers‐Kronig Transformation of Constant Phase Impedances

The question of whether constant phase impedances obey the Kramers‐Kronig relations has been examined analytically and numerically. We show that these impedances do transform correctly provided that ‐|⋜α⋜|. This range of α values covers all minimum phase passive electrical elements (R, C, L), semi‐infinite diffusion , pore diffusion, RC transmission lines , R‐L transmission lines , and R‐C‐L transmission lines.