l = 1 400 .
: , .
3 :
1. (400 315 )
2. (315 280 )
3. (280 200 )
4.
.
, , .
. .
, -. .
:
;
, ;
.
J /2 .
1) =50% , τ ≥ 5 .
- 10 /2; - 0, 1 /2; -
2) ≤1 , τ1 < 5 , τ > 30
- 50 /2; - 0,5 /2; - 0,0001 /2
1. .
2. .
3. (, ,...)
4. . .
1. : ,
2.
3.
.
(> 0).
0,78-103
Þ .
:
1. .
2. .
3. ( ).
.
. 12.1.005 88 - .
| l | . . , /2 | ||
| 760 1500 | S ³ 50 % | ||
| 1500 3000 | 25 < S < 50 % | ||
| 3000 4500 4500 1000 | S £ 25 % . S £ 25 % |
.
. . . . ( ). . .
1. , ; R = λ/2π.
2. .
3. , ; R=2 π λ
2.2.4.1191-03
| f, | λ, | λ/2π, | |
| 3104 - 3107 | 104 - 10 | 1667 1,67 | |
| 3107 - 3108 | 10 - 1 | 1,67 0,167 | |
| 3108 - 31011 | 1 10-3 | 0,167 0,16710-3 |
|
|
|
.
:
1) . 10 /2, .
2) , , .
3) , , .
4) , .
( ).
.
, : ()
= 2, = [/]
= 2, = [/]
= ݷ, [/2]
= PG/4πR2, , G .
1.
= 2/, /2, = 2 /2
≤ 10 /2
2. ( , )
= 2/, /2
≤ 1 /2
3.
= 20/, /2
≤ 10 /2
4.
= ʷ/
: J = E × H
