Disain Amplifier RF
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Transcript of 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
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5.0
+0.2
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+0.5
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+1.0
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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
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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