qucs-bugs

[Carsten K. <cko...@cb...>]

Hello,

when I use the PhaseShifter component in an AC simulation I get strange results.
In the following simulation the measured voltage jumps to a complete different value only for one specific phase shifter value.
I also had an segmentation fault error with a simulation very similar to this one, but could not reproduce it
Are phase shifters allowed in AC simulations?

Best Regards
Carsten

<Qucs Schematic 0.0.16>
<Properties>
  <View=570,-5,2605,1112,0.811996,0,0>
  <Grid=10,10,1>
  <DataSet=phase_shifterTest_PhaseSweep.dat>
  <DataDisplay=phase_shifterTest_PhaseSweep.dpl>
  <OpenDisplay=0>
  <Script=phase_shifterTest_PhaseSweep.m>
  <RunScript=0>
  <showFrame=0>
  <FrameText0=Title>
  <FrameText1=Drawn By:>
  <FrameText2=Date:>
  <FrameText3=Revision:>
</Properties>
<Symbol>
</Symbol>
<Components>
  <C C30 1 1220 460 -68 -28 1 1 "7pF" 1 "" 0 "neutral" 0>
  <C C31 1 1220 360 -83 -21 1 1 "10pF" 1 "" 0 "neutral" 0>
  <GND * 1 1220 490 0 0 1 2>
  <VProbe UPr16 1 1390 390 28 -31 0 0>
  <GND * 1 1400 490 0 0 0 0>
  <PShift X5 1 970 300 33 -45 1 2 "phase" 1 "50 Ohm" 0>
  <GND * 1 820 490 0 0 1 2>
  <Pac P1 1 820 410 29 -40 1 1 "1" 1 "50 Ohm" 1 "0.001" 1 "1 GHz" 0 "26.85" 0>
  <.AC AC1 1 920 580 0 45 0 0 "lin" 1 "200MHz" 1 "300MHz" 1 "100" 1 "no" 0>
  <.SW SW1 1 1130 580 0 73 0 0 "AC1" 1 "lin" 1 "phase" 1 "0" 1 "359" 1 "360" 1>
</Components>
<Wires>
  <1220 390 1220 410 "" 0 0 0 "">
  <1220 410 1220 430 "" 0 0 0 "">
  <1220 410 1380 410 "" 0 0 0 "">
  <1400 410 1400 490 "" 0 0 0 "">
  <1220 300 1220 330 "" 0 0 0 "">
  <1000 300 1220 300 "" 0 0 0 "">
  <820 300 940 300 "" 0 0 0 "">
  <820 300 820 380 "" 0 0 0 "">
  <820 440 820 490 "" 0 0 0 "">
</Wires>
<Diagrams>
  <Rect3D 1370 920 530 349 3 #c0c0c0 1 00 1 2.722e+08 5e+06 3.222e+08 1 -36 100 400 1 0.34 0.005 0.368008 292 0 255 "" "" "">
	<"UPr16.v" #0000ff 0 3 0 0 1>
  </Rect3D>
  <Tab 1570 523 387 403 3 #c0c0c0 1 00 1 0 1 1 1 0 1 1 1 0 1 3600 315 0 225 "" "" "">
	<"UPr16.v" #0000ff 0 3 1 0 0>
  </Tab>
</Diagrams>
<Paintings>
</Paintings>