Disain Amplifier RF

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    Disain Amplifier RF

    [Bretchko Chapter 9]

    Aspek2 Dasar

    Disain Amplifier RF Semikonduktor

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    Rangkaian RF

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    Amplifier RF

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    Transducer o!er "ain

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    #nilateral Transducer $ "ain

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    #nilateral Transducer $ "ain

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    Sta%ilit& Circle

    ' Amplifier %eroperasi dengan %and!idthtertentu

    ' (mpedansi kompleks dapat ter%entuk dari

    %er%agai kom%inasi real)ima*inerlingkaran

    ' Se%agai konsekuensi+ sta%ilitas *uga

    digam%arkan dalam se%uat lingkaran,circle- dengan pusat dan *ari)*ari tertentu

    ' (nput sta%ilit& . output sta%ilit&

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    #nconditional Sta%ilit&

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    T#"AS

    ' /em%aca Chapter 9 Bretchko+

    ' /enger*akan ulang soal)soal contoh 9)0

    sampai 9)01+ %agi kelas men*adi 01 group$

    ' /em%uat atau men*alankan routin matla%

    untuk men*a!a% soal)soal contoh

    terse%ut$

    ' /ulai minggu &ang akan datang dilakukan

    demo untuk menger*akan soal$

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    3$ 9)0 o!er relation

    ' RF amplifier mempun&ai S)parameter &ang diukur pada

    45 6hm7 s0085$):5+ S208$414+ S0285$2)05

    dan S2285$;);4$ Sum%er %erupa tegangan dengan

    s8;5 6hm$

    6utputn&a mendri=e antena dengan impedansi :4 6hm$' ?itung7

    @ Tranducer gain+ unilateral transducer gain+ a=aila%le gain+

    operating po!er gain

    @ o!er deli=ered to the load ,-+ a=aila%le po!er ,A- daninciden po!er inc

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    3$ 9)

    ' Tentukan sta%ilit& region dari BT

    BF"454 dengan %ias

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    /atla% routine E

    ' ' (n this e3ample !e plot input and output sta%ilit& circles' for the BT !hose S)parameters are measured at se=eral' freGuencies$ (n this simulation !e use the t&pe BF"454 %iased' at

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    lot (nput)output Sta%ilit&

    0.2

    0.5

    1.0

    2.0

    5.0

    +0.2

    -0.2

    +0.5

    -0.5

    +1.0

    -1.0

    +2.0

    -2.0

    +5.0

    -5.0

    0.0

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    3)9);

    ' Carilah sta%ilit& region dari transistor &ang mempun&ai

    S)parameter &ang diukur pada 45 6hm7 s0085$:):5+

    S0285$2)05+ S2084$414dan S2285$:);4$

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    ' ' This routine plots the input and output sta%ilit& circles' for a h&pothetical transistor and !hose S)parameters' are defined in 3maple 9);' ' Cop&right ,c- 0999 %& $Bretchko and R$ud!ig' HRF Circuit Design7 Theor& and racticeH' ' ' close allI close all opened graphs

    ' clear allI clear all =aria%les' ' smithJchartI create a Smith Chart' ' S)parameters for the h&pothetical transistor' ' s0085$:Le3p,*L,):5-O015Lpi-I' s0285$2Le3p,*L,)05-O015Lpi-I' s2084$4Le3p,*L,M14-O015Lpi-I' s2285$:Le3p,*L,);4-O015Lpi-I'

    ' sJparam8[s00+s02Is20+s22]I' ' [P+delta] 8 PJfactor,sJparam- check sta%ilit&' ' inputJsta%ilit&,sJparam+ NrN-I' outputJsta%ilit&,sJparam+ N%N-I' ' print )deps Nfig9J9$epsN

    /atla% result

    0.2

    0.5

    1.0

    2.0

    5.0

    +0.2

    -0.2

    +0.5

    -0.5

    +1.0

    -1.0

    +2.0

    -2.0

    +5.0

    -5.0

    0.0

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    T#"AS A(B

    ' Baca chapter 9 QRF Amplifier Design

    Bretchko $$$

    ' Cari spesifikasi Transistor RF pada

    frekuensi gelom%ang mikro+ terutamascattering parametern&a

    ' akukan Qpemrograman agar kita dapat

    melakukan analisis a!al transistor@ /atla%

    @ 3cel