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(3.19), (3.20) (3.21) .

W(jw) = = = - j , (3.55)

.. U(w) = ; V(w) = .

A(w) = = ; (3.56)

j(w) = arctg = - arctg wT. (3.57)

. 3.12.

.3.12

 

. 3.12 , 0 ¥ 0 -90.

, w = 1/, A(1/T)= , j(1/T)=-45. . , ( ).

(3.55) 0 ¥. ,

U(-w)=U(w), V(-w)=-V(w).

.3.13

 

, 0 + ¥ - ¥ 0.

.3.13.

, . .

(3.56), ().

L(w)=20lg =20lg1-20lg . (3.58)

(3.58). .

0 £ w < 1/T L(w) 20lg1. (3.59)

1/T £ w < ¥ L(w) 20lg1 - 20lgwT=-20lgwT. (3.60)

(3.59) (3.60) ( ). (3.59) , (3.60) . () .

, (3.60). , .. /:

L(10w) - L(w) = 20lg1 - 20lg(10wT) - 20lg1 - 20lgwT = -20lg 10 = -20 ,

, -20 /.

w=1/ 20lg 3 .

. 3.14.

.3.14

 

W(jw) = = ,

.. A(w)= j(w)=-p/2, . 3.14.

, , -90 .

-20lg A(w) = 20lg = 20lg1 - 20lg w. (3.61)

(3.61) - , -20 / . w=1-1 L(w)=0 (. . 3.14)

3.1.


3.1.

 

 
(, ) ()
x = k× x, k - , - k - , - 0, - , k - , - x(t - t)= x,(t), t - -
W(p) k T× p
- h(t)
 
 

. 3.1.

 

 
- (, ) () -
L(w)
j(w)

 






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