/

   

, . , . , .

" " ("", 2005, 9, . 11, 12). - - . , , , "", .

, , . . . , , . . . .

 
. 1 ( )

, , . 1. - , - ( Unp), , .

R1 - , . , 1 XW1. C1L1C2 30 . VD1, VD2 , a VD3 - R2 R3, R5, R6 R4 R5, R6 , 3.. 4

GALI-5 INA-03184 MSA-0505 MSA-1105 MSA-0786 MSA-0886 SGA-6489 SGA-7489 MAX2611
, 20 25 7,5 10 13 32 20 22 18
F-, = 2000 = 2500 = 2300 = 1300 = 2000 = 400 = 1500 = 1000 = 1100
  3,5 2,6 6,5 3,6 5 3,3 2,8 2,9 3,5
P1, 19 -2 19 17 2 12,5 20 22 2,9
IP, , 35 7 29 30 19 27 33 38 13
I, 65 10 80 60 22 36 75 130 16
c 85 25 135 80 60 65 150 160 40
Unp. 4,4 4 8,4 5,5 4 7,8 5 5 3,8
SOT-89 84 Plastic 05 Plastic 05 Plastic 86 Plastic 86 Plastic SOT-89 SOT-89 SOT-143


, . . , - ; F-3 - 3 ( ); - .

: , - , 1 (Output Power at 1 dB Gain Compression); IP3 - , . (Third Order Intercept Point). 50- , (). : - ; - ; Unp - .


. 2

, , . 2. VD1 , L1 , L1C2C3 . XW1 , XW2 - , XW3 , . , XW2 XW1 .


. 3

1,5 , . 3. . 1-12, - - 3303 BOURNS, 0805. -2 0,2 2 10-12 . XW1 -XW3 - F, . . . 4.


. 4

R2, R3, R5, R6 (Rz) 11, , I: R = (U-U)/l. - 75 , R5 R6 , . . R5 = R6 = 75 . , SGA-6489 (I = 75 ) U = 12 R = (12 - 5)/75 - 93 R5 R6 38 , R2 R3 : 93 - 38 = 55 R2 = R3 = 100 . , R2 ( R3) cc  = (l/2)2-R2 = 0,14 , 0,25 .


. 5

. 5. 1,5 , . -24 (1 - 10 ), - CAT (-, CAT-) . XW2 . .

, (XW3), , 15 P1 IP3. R2, R3, R5, R6 , 3 . 4 , L1 . - .

, (=0,95...2,4 ) . (LNB - Low Noise Block) .

: .

.

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