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ChipNews

Новости строительства

827:

827 0688759652

:

- . , , " " " ", .

2963-2 (RUS) . :

2963-2

II ... 372:

!

( . )

     , , . , .

     . , , , . , , (), . , , MB15E03SL Fujitsu (www.fujitsumicro.com), LC . , 10%.

     , (hop time) . , , . , , .

     . , , . , .

     - - , , . , . , . , .

     , , , . :

     :

. 1. () , ()

     , . 1.

  1. FSTEP :

    FSTEP = FMAX VCO FMIN VCO;



  2. N:

    N = FMAX VCO / ;



  3. FN:

         x , 0,707;

  4. 2:

  5. R1:

  6. 1:



  7. R2 C3. , RC- , C2 R1.

  8. TS:

         FA TS, 1000 .

     . 1 , . , MB15E03SL, . . 2 100 100 . 100 ( 0) -72,0 dBc/, 1000 -75,5 dBc/. , (1000 ).

       100  - 100

. 2. 100 - 100

    . 3 , 30 -96,7 dBc. , . 4, 770,01 800,01 , 7,65 . . , .

     30     -96,7 dBc

. 3. 30 -96,7 dBc

    770,01  800,01   7,65

. 4. 770,01 800,01 7,65

. ,

, ,
500 15,5
1000 7,7
2000 3,9
3000 2,6


 :

1. FSTEP = 800,01  - 770,01  = 30 ;
2. N = 800,01  : 30  = 26667;
3. FN = 2 · 1000 : (6,28·(0,707 + 1 : 2,828)) = 300,27 ;
4. 2 = (0,006 · 226):(26667·(6,28·300,27)2) = 1,39 ;
5. R1 = 1,414 x (26667:(0,006·226·1,39-6)) = 539 ;
6. 1 = 1,39  : 10 = 0,139 ;
7. , R2 = 539 ,  3 = 1,39  : 10 = 0,139 ;
8. TS = (-1·ln(1000:30e6)) : (300,27·6,28·0,707) = 7,73 

EDN, 2000 .







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