A.8 Setup of the Resonant Circuit and the Band Rejection Filter

This section contains the setup of the parallel resonant circuit and the band rejection filter:

ResonantCircuit
{
   aux vR = 10 kOhm;
   aux f0 = 10 MHz;
   aux w0 = 2 * pi * f0;
   aux Q  = stepTbl([0.5, 1.0, 2.0, 5.0, 10.0]);

   aux vL = vR / (w0 * Q);
   aux vC = Q  / (w0 * vR);

   Iin : ~Devices.I { P  = "out"; M  = "gnd"; I0 = 1 A; acI0 = 1 A; }

   R   : ~Devices.R { N1 = "out"; N2 = "gnd"; R  = ^vR; }
   L   : ~Devices.L { N1 = "out"; N2 = "gnd"; L  = ^vL; }
   C   : ~Devices.C { N1 = "out"; N2 = "gnd"; C  = ^vC; }
}

BandRejection
{
   aux f0 = 50 Hz;
   aux vC = 100 uF;
   aux w0 = 2 * pi * f0;
   aux Q  = stepTbl([0.5, 1.0, 2.0, 5.0, 10.0]);

   aux vL = 1 / (w0 * w0 * vC);
   aux vR = 1 / (Q  * w0 * vC);

   Vdd : ~Devices.V { P  = "Vin"; M  = "gnd"; V0 = 1 V; acV0 = 1 V; }

   R   : ~Devices.R { N1 = "Vin"; N2 = "out"; R  = ^vR; }
   L   : ~Devices.L { N1 = "out"; N2 = "ctr"; L  = ^vL; }
   C   : ~Devices.C { N1 = "ctr"; N2 = "gnd"; C  = ^vC; }
}

Since both simulations use the same Solve and Curve section, the conditional inheritance is a good choice to improve the setup. This feature can be especially employed for including several similar simulations in one input-deck. Depending on the variable resonant (which could be, for example, bound to an environment variable), either section ResonantCircuit or section BandRejection is inherited by the Circuit section.

aux resonant = yes;

Circuit : ResonantCircuit ? ~resonant, BandRejection ? !~resonant;

Note, that the sources provide the following keywords:

• Parameter acI0 for complex-valued current sources.
• Parameter acV0 for complex-valued voltage sources.
• Parameter acPort for port names of voltage sources required for the admittance matrix simulations.