D:Ha根据 Maxwell方程中场分量的关系求出, (%)()小a+y r≤a m-1) H 2k.a (%)小 cos(m+1Copyright Wang Yan D: H(Z) 根据Maxwell方程中场分量的关系求出，  ( ) ( ) ( )  ( ) ( ) ( )  ( ) ( ) ( )  ( ) ( ) ( )               −      −  +       −      +  +           − = − + +     / K U cos m 1 a K Wr n W / K U cos m 1 a K Wr n W /J U cos m 1 a Ur J n U /J U cos m 1 a Ur J n U 2 m 1 m 2 m 1 m 2 m-1 m 1 m 1 m 1 0 k a j A HZ r  a r  a