diff --git a/examples/templates_ngspice/S-parameter_file_analysis.sch b/examples/templates_ngspice/S-parameter_file_analysis.sch
deleted file mode 100644
index a9ed2286..00000000
--- a/examples/templates_ngspice/S-parameter_file_analysis.sch
+++ /dev/null
@@ -1,54 +0,0 @@
-<Qucs Schematic 24.1.0>
-<Properties>
-  <View=-17,-126,1556,780,0.745707,0,1>
-  <Grid=10,10,1>
-  <DataSet=S-parameter_file_analysis.dat>
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-  <GND * 5 400 200 0 0 0 0>
-  <Pac P1 1 120 150 -97 -31 0 1 "1" 1 "50 Ohm" 1 "0 dBm" 0 "1 GHz" 0 "26.85" 0 "true" 0>
-  <GND * 5 120 200 0 0 0 0>
-  <.SP SP1 1 70 270 0 80 0 0 "lin" 1 "445kHz" 1 "465kHz" 1 "101" 1 "no" 0 "1" 0 "2" 0 "no" 0 "no" 0>
-  <NutmegEq NutmegEq1 1 290 270 -27 16 0 0 "sp" 1 "S11_dB=dB(s_1_1)" 1 "S12_dB=dB(s_1_2)" 1 "S21_dB=dB(s_2_1)" 1 "S22_dB=dB(s_2_2)" 1>
-  <NutmegEq NutmegEq2 1 290 430 -27 16 0 0 "sp" 1 "Phase_rad=cph(s_2_1)" 1 "Phase_deg=180/pi*Phase_rad" 1 "Group_Delay=-1*deriv(cph(S_2_1))/2/pi" 1>
-  <SPfile X1 1 250 100 -26 -59 0 0 "FL455kHz.s2p" 1 "rectangular" 0 "linear" 0 "open" 0 "2" 0>
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-	<"ngspice/ac.s22_db" #ff0000 0 3 0 0 1>
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-  <Text 60 -30 14 #000000 0 "S-parameter simulation of FL455kHz.s2p\nFix path to FL455kHz.s2p file">
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diff --git a/examples/templates_ngspice/S-parameter_passive_analysis.sch b/examples/templates_ngspice/S-parameter_passive_analysis.sch
new file mode 100644
index 00000000..0402ca71
--- /dev/null
+++ b/examples/templates_ngspice/S-parameter_passive_analysis.sch
@@ -0,0 +1,77 @@
+<Qucs Schematic 24.1.0>
+<Properties>
+  <View=-17,-20,1733,1115,1,0,240>
+  <Grid=10,10,1>
+  <DataSet=S-parameter_passive_analysis.dat>
+  <DataDisplay=S-parameter_passive_analysis.dpl>
+  <OpenDisplay=0>
+  <Script=S-parameter_passive_analysis.m>
+  <RunScript=0>
+  <showFrame=0>
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+  <FrameText1=Drawn By:>
+  <FrameText2=Datum:>
+  <FrameText3=Revision:>
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+<Symbol>
+</Symbol>
+<Components>
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+  <GND * 5 280 220 0 0 0 0>
+  <GND * 5 440 220 0 0 0 0>
+  <GND * 5 480 220 0 0 0 0>
+  <Pac P2 1 620 170 20 -25 0 1 "2" 1 "50 Ohm" 1 "0 dBm" 0 "1 GHz" 0 "26.85" 0>
+  <GND * 5 620 220 0 0 0 0>
+  <GND * 5 120 220 0 0 0 0>
+  <Pac P1 1 120 170 -97 -31 0 1 "1" 1 "50 Ohm" 1 "0 dBm" 0 "1 GHz" 0 "26.85" 0>
+  <C C1 1 180 100 -26 -55 0 2 "4.7pF" 1 "" 0 "neutral" 0>
+  <C C5 1 560 100 -32 -54 0 0 "4.7pF" 1 "" 0 "neutral" 0>
+  <C C3 1 370 100 -26 -55 0 2 "1pF" 1 "" 0 "neutral" 0>
+  <.SP SP1 1 40 310 0 80 0 0 "lin" 1 "107MHz" 1 "167MHz" 1 "101" 1 "no" 0 "1" 0 "2" 0 "no" 0 "no" 0>
+  <C C4 1 480 170 16 -21 0 3 "15pF" 1 "" 0 "neutral" 0>
+  <C C2 1 240 170 -73 -16 0 1 "15pF" 1 "" 0 "neutral" 0>
+  <L L2 1 440 170 -71 -18 0 1 "66nH" 1 "" 0>
+  <L L1 1 280 170 10 -18 0 1 "66nH" 1 "" 0>
+  <NutmegEq NutmegEq1 1 250 330 -27 16 0 0 "sp" 1 "S11_dB=dB(s_1_1)" 1 "S12_dB=dB(s_1_2)" 1 "S21_dB=dB(s_2_1)" 1 "S22_dB=dB(s_2_2)" 1>
+  <NutmegEq NutmegEq2 1 430 330 -27 16 0 0 "sp" 1 "Phase_rad=cph(s_2_1)" 1 "Phase_deg=180/pi*Phase_rad" 1 "Group_Delay=-1*deriv(cph(S_2_1))/2/pi" 1>
+  <NutmegEq NutmegEq3 1 430 470 -27 16 0 0 "sp" 1 "GD=group_delay(s_2_1)" 1>
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+<Paintings>
+  <Text 90 0 14 #000000 0 "Group Delay using S-parameter simulation 132-142 MHz BPF">
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diff --git a/examples/templates_ngspice/genericopa.cir b/examples/templates_ngspice/genericopa.cir
new file mode 100644
index 00000000..b541eddb
--- /dev/null
+++ b/examples/templates_ngspice/genericopa.cir
@@ -0,0 +1,16 @@
+* generic OpAmp model
+* gain, phase, offset, limits to power supply, input and output resistance
+.subckt genopa in+ in- vcc vee out POLE=20 GAIN=20k VOFFSET=5m ROUT=10 RIN=10Meg
+Rin in+ in+ {RIN}
+Voff in+ inoff dc {VOFFSET}
+G10 0 int inoff in- 100u
+R1 int 0 {GAIN/100u}
+C1 int 0 {1/(6.28*(GAIN/100u)*POLE)}
+Eout 2 0 int 0 1
+Rout 2 out {ROUT}
+Elow 3 0 vee 0 1
+Ehigh 8 0 vcc 0 1
+Dlow 3 int Dlimit
+Dhigh int 8 Dlimit
+.model Dlimit D N=0.01
+.ends genopa