Filtri attivi - Corsi a Distanza
Transcript
Filtri attivi - Corsi a Distanza
½ ! " ! # $ % & ' ( ) * + * , - .. / % 0 .. . , ! # ! 1 # # 2 2 .3 , ( 2 .4 - , + + , ! 5 , ! ! , ! ( 6 .7 ! 1 ! # , # ! 5 , ! # ! ( ! 8 9 ! 2 # ! + .: 2 , 1 ! 6 .; 0 H -22.5 dB |H| 0 -45 -10 -67.5 -20 0.1 1 f/f0 -90 10 0.01 0.1 1 10 f/f0 100 ! , 8 ! 5 .3 8 , 2 * ! ! * 2 ! 2 .< " 1 # + ! ! = ! * - ! 2 + .> - , 2 ! # 6 .? , + dB 0 90 H 67.5 -10 45 |H| 22.5 -20 0.1 1 $ f/f0 10 0 0.01 0.1 1 10 f/f0 100 ( * , ) * 1 ..@ 2 = # % , 5 ! , ! ... + ! , 1 - # 1 # 5 dB |H| 0 90 -10 H 0 -20 0.1 10 1 f/f0 -90 100 0.1 1 10 f/f0 100 A ! ! ..3 1 0 H -45 dB |H| 0 -90 -10 -135 -20 0.1 1 f/f0 10 -180 0.01 0.1 1 10 f/f0 100 ! ! B - ! - # ! , 2 ! ! , ..4 - 5 ! Æ * , * 8 , 1 # , A A! 0 , 2 ..7 dB 0 0 |H| Q H Q -90 -40 -80 0.01 0.1 1 10 f/f 100 0 -180 0.01 0.1 1 10 f/f 100 0 6 ! C , 6 5 ! 7@6 D - !D 1 , - / ! 2 2 , , - 0 # ! ! E 6B , 2 9 * , 6 1 + ..: , ! E ! dB 0 180 |H| H Q Q 90 -40 -80 0.01 0.1 0 0.01 10 f/f 100 0 1 0.1 1 10 f/f 100 0 ( * 6B , +90 0 dB |H| H Q -20 -40 -60 0.01 0 Q 0.1 1 10 f/f 100 0 -90 0.01 0.1 1 10 f/f 100 0 ! ..; - 6 E + 6 . 6 2 # # ( # # & ' ! , # # # # * ) ! 5 ! , C ! , 5 , + 5 * ( F F * GF H # 2 ..7 C , ( &' 6 $ @6 2 , . 3 8 . * 1 8 3 dB |H| 0 90 Q H 0 -20 Q -40 0.1 -90 0.01 f/f0 10 1 0.1 1 10 f/f 100 0 " ..< 2 ! * ! , + ) . Æ Æ ..> 0 H Q -180 -360 0.01 0.1 10 f/f 100 0 1 # !" * # 5 - * , Æ Æ Æ Æ D # , 8 I , J + * , 1 * ( * ! I A * 1 D 8 * + * ! !* - 1 ! ! ! 1 A ! # + * # - ! & !' ! ! , 9 1 C ! C # 8 # ! # $ A 2 KI "+ B 2 KI ..? / ( Y2 Y1 VX Ve $ Y3 Y4 Vu Vu & '() - ! ( $ ! ! , 2 2 ! , L 2 KI - @ ( 2 .3@ nC mR R Ve C VX % Vu Vu '* '() 2 ! , + ! , ( C2 R1 Ve R3 VX C4 Vu Vu '* '() + - I .3. ! , + I , * , 1 .M @:M .M @:M ! # * , 5 I A! 2 NI * $* * 1 ! 2 1 8 # - ! A .33 R nC C Ve VX mR Vu Vu '* '() + ! , R2 C 3 C1 Ve VX R4 Vu Vu '* '() + ( I , I , * , ( * I $* ! * ! ! = ! .37 RA Y1 Y2 Y3 Ve RB K Y4 Vu/K Vu Vu/K K=1+RB /RA Vu '* + ! ! ! * * 2 KI ! 2 , ! ! ! ! A 2 KI ! .3: RA nC mR RB R Ve VX C Vu Vu/K '* + , ! ! + ! , ! ! A ! ! - 8 # 1 I .3; , RA C2 R1 Ve RB R3 VX C4 Vu Vu/K ! '* + 2 * 2 NI I ( $* ! * ! ( - !.M 3@ M O ( - , ! ! ! 1 ! ! ! ! 2 KI ..? ! 2 ! .37 ! ! ! ! * ! # A # $ ( .3< Y1 Y2 Ve Y4 " Y3 Y5 Vx Vu '* , ! 1 8 9 ! 2 .3< 2 = .3> C2 R1 Ve C3 R5 R4 # Vu , , 2 ! * ! ! ! - ! .3? R2 R1 Ve C5 R3 C4 $ Vu + , , ( ! # % $& ' % * $ * / 2 * # # # * 0 ! , , " ! .4@ F(s) Ve % Vu1 Vu2 Vu3 '* * 5 ! .4. " .43 ( , , * * R4 R5 R3 C1 R6 C2 R7 Ve VHP R1 VLP R2 VBP 2 , 5 ! - 8! 2 8 .44 * C1 R1 R5 C2 R2 R4 Ve R3 R3 VBP -VLP VLP & - 8 ! # " * - ! # , 1, , A , 2 ( C % , A (&) .47 2 ! * |H| fs fc f .* # + A *, * 6B , ! 46 P@ 6 % 6B # - 6B .7@ .7. .3 1 ( # * * + .4 ! .73 .74 .77 .7 - ! $ ! .73 .74 ! .7: 1 2 + 6 6B * 1 6 .. ! .4> .4? 2 6 ! #$%# ( ! ( .7; : A! # , $ 5 2 2 7@6 7KF ! 7@6 % * 5 5 ! ! 1 ! 1 ! ! #& ' *' "+ 2 ! / * ! Ix Vx Z1 Z2 A1 Va2 Z5 Va1 A2 Vx Z3 Z4 Vx & 2 # .4: ! ! 1 & ! - ! ! ( ' ' 2 5 ' ( , & & & ' ( 2 , 1! 058" ! Ve ! Vu , ! # "+ .4; , ( ( .4< ! Vu R Ve C R1 A2 C2 V’u R3 A1 R4 R5 " , A! ! / ! ! ! , - ! ! $ 3 .@ 6 6B +I +I ¼ ¼ ¼ ¼ ¼ / 0 ¼ ¼ ¼ ¼ ¼ / 1 *0 ¼ ¼ ¼ ¼ / &* )* 0 ¼ ¼ ¼ ¼ ¼ / &* )* 0 0 dB 7 6 5 4 3 -1 2 -2 0.1 0.5 # f 2 1 ¼ 0 dB 4 3 -10 5 6 2 7 8 9 10 -20 -30 -40 -50 f 5 1 $ 10 2 0 dB 2 3 4 5 10 -1 -2 -3 0.1 % 0.5 f 1 *2 1 0 dB -20 -40 2 -60 3 -80 4 10 8 7 6 5 1 1 dB 9 5 f 10 1 *2 10 6 0 2 3 7 -1 0.1 0.5 f &* )* 2 3 2 0 0 !0 "0 %4 1 1 dB 8 4 0 5 9 -1 0.1 f 0.5 1 &* )* 2 3 2 0 0 #0 $4 0 dB -20 2 -40 -60 3 -80 10 1 9 8 7 5 6 5 &* )* 2 4 f 10 0 dB -20 2 -40 3 -60 -80 10 9 8 7 1 4 5 6 f 5 10 &* )* 2 0 dB -40 Be el rw or B B 5d 0. 1d th v v he he ys tte ss Bu eb ys eb Ch Ch -80 -120 0.1 1 f ! & * - 0 - 10