常用傅里叶变换对,拉氏变换对,Z变换对
单边指数脉冲
e at u (t ), Re a 0
1 a j 2a a 22
双边指数脉冲
e
a t
, Re a 0
高斯脉冲
e
( at )2
a
e
2a
2
三角脉冲
t 1 T, t T1/ 2 triT1 (t ) 1 0, t T/ 2 1 1 (a j ) 2 1 (a j ) na j (a j ) 2+ 0 2
te at u(t ), Re{a} 0t n 1 e at u (t ), Re{a} 0 (n 1)!减幅余弦
e at cos( 0t )u (t )
减幅正弦
e at sin( 0t )u (t )
0 (a j ) 2+ 0 2
1 a t22
a
e
a
余弦脉冲
GT1 (t ) cos( 0t )
( 0 )T1 T1 sinc ... 2 2 sinc ( 0 )T1 2