5.1 .
.
. .
-1 , 12 +12. . 30- , , 1 5. .
5.2 --08
.
. , , , XW2, XW3 (.8), 1 5 - . 3-51, 3-66. 1 1,00,2 12200,001 . 5 -- 3¸5 49250,002 .
5.3 1 (. 8)
1. (S1) 4/70 .
2. 1 , 3775 1 , 85 .
3. 70 .
4. (9) U 1. (0 1) .
5. (R1) 4/70 0 (275).
6. 3750 3800 , . 85 .
.8
1.
7. U(f).
.
f, | |||||||||||
U, | |||||||||||
P, | |||||||||||
K, | |||||||||||
P = - 85 , U = 0,3976 ; P = (U)2/R; R = 75 ; Kp = P/ |
8. U P = (U)2/R. .
|
|
9.
Kp = P/ Kp [] = 10 lg (P/) = 20 lg (U/ U)
. Kp(f).
5.4.
1. 3775 85 .
2. 70 .
3. 18 ( ).
4. . :
8 / .
N1 dB mW.
N2 dB mW.
n .
, :
= (N2 N1 20 lg(8/n)),
, , , 50 .
DS = 1 .
5.5. (. 9)
1. 1, , 3775 85 .
2. 1 (4) 4/70 . (+1, 0 0,1) .
R40 .
5.6.
1. Ӗ 4/70 .
2. 85 , 1 (U0).
3. 93 1 (U-8). (DN-8 ) :
DN-8 = 20 lg(U0/U-8).
4. 77 1 (U+8 ). (DN+8 ) :
DN+8 = 20 lg(U+8/U0).
0,5 , R50 .
6.
1 :
-1
kp(f)
|
|
.
.9
.
7.
1. .
2. -1. -1 .
3. 1 5? , .
4. ? .
5. -1?
6. ?
7. -1 ?
8. ? , . .
9. ?
10. ?
11. ?
12. ?