二、带线和微带特性阻抗 A 121-k22二、带线和微带特性阻抗 B 0 C E D F A x y b w/2 Z-plane A B C D E F A - -1/k -1 1 1/k t-plane tr ti u v C D E F A B A w-plane 1 ( ) z A t t t k dl B = − −                     + 1  2 2 2 2 1 2 0 1 1 1 / ( )( ) w A dt t k t B t = − − + 2 0 2 2 2 2 1 1