mirror of
https://github.com/ra3xdh/qucs_s
synced 2025-03-28 21:13:26 +00:00
51 lines
1.9 KiB
XML
51 lines
1.9 KiB
XML
<Qucs Schematic 0.0.12>
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<Properties>
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<View=0,10,750,594,1,0,0>
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<Grid=10,10,1>
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<DataSet=groupdelay_ac.dat>
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<DataDisplay=groupdelay_ac.dpl>
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<OpenDisplay=1>
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<showFrame=0>
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<FrameText0=Titel>
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<FrameText1=Gezeichnet von:>
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<FrameText2=Datum:>
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<FrameText3=Revision:>
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</Properties>
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<Symbol>
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</Symbol>
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<Components>
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<C C1 1 240 220 17 -26 0 1 "39.01pF" 1 "" 0 "neutral" 0>
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<GND * 1 240 250 0 0 0 0>
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<L L1 1 310 140 -26 10 0 0 "280.9nH" 1 "" 0>
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<C C2 1 380 220 17 -26 0 1 "39.01pF" 1 "" 0 "neutral" 0>
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<GND * 1 380 250 0 0 0 0>
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<GND * 1 60 250 0 0 0 0>
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<Vac V1 1 60 200 18 -26 0 1 "1 V" 1 "1 GHz" 0 "0" 0 "0" 0>
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<Vac V2 1 550 200 18 -26 0 1 "0 V" 1 "1 GHz" 0 "0" 0 "0" 0>
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<GND * 1 550 250 0 0 0 0>
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<R R2 1 480 140 -26 15 0 0 "Z0" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
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<.AC AC1 1 50 330 0 46 0 0 "log" 1 "1 MHz" 1 "200 MHz" 1 "458" 1 "no" 0>
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<Eqn Eqn1 1 270 340 -28 15 0 0 "dBS21_3rd=dB(S21)" 1 "S21=b2/a1" 1 "S11=b1/a1" 1 "a1=(P1.v+Z0*-V1.i)/(2*sqrt(Z0))" 1 "Z0=60" 1 "b1=(P1.v-Z0*-V1.i)/(2*sqrt(Z0))" 1 "b2=(P2.v-Z0*-V2.i)/(2*sqrt(Z0))" 1 "gain_phase=unwrap(angle(S21))" 1 "group_delay=-diff(gain_phase,2*pi*acfrequency)" 1 "yes" 0>
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<R R1 1 150 140 -26 15 0 0 "Z0" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
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</Components>
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<Wires>
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<240 140 240 190 "" 0 0 0 "">
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<380 140 380 190 "" 0 0 0 "">
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<240 140 280 140 "" 0 0 0 "">
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<340 140 380 140 "" 0 0 0 "">
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<60 230 60 250 "" 0 0 0 "">
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<380 140 450 140 "P2" 430 100 31 "">
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<510 140 550 140 "" 0 0 0 "">
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<550 140 550 170 "" 0 0 0 "">
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<550 230 550 250 "" 0 0 0 "">
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<180 140 240 140 "P1" 230 100 28 "">
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<60 140 60 170 "" 0 0 0 "">
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<60 140 120 140 "" 0 0 0 "">
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</Wires>
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<Diagrams>
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</Diagrams>
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<Paintings>
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<Text 470 310 12 #000000 0 "3rd order\nButterworth low-pass filter\n68MHz cutoff, PI-type,\nimpedance matching 60 Ohm">
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<Text 60 50 14 #000000 0 "group delay using AC simulation">
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</Paintings>
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