Qucs touchstone import manual#

Many people are involved to make the component and feature list more complete.

component designer for inductances and capacitances.

attenuator synthesis (resistive pi, tee, bridged-tee and splitter topology).

filter synthesis (LC ladder, stepped-Z, microstrip, active filters etc.).

numerical data processing using Octave by John W.

PCB layout and Gerber viewer using KiCAD by the KiCAD team qucs- tioii implics n miah grcntcr dagrco of coiilrol ovcr socinl proccsscs.

import of GDS II format with libGDSII by M.

import of PCB layouts in HyperLynx format with hyp2mat by Koen De Vleeschauwer.electromagnetic field simulation of PCBs.digital simulations in VHDL using GHDL by Tristan Gingold.

digital simulations in Verilog using ICARUS by Stephen Williams.

VerilogA using ADMS by Laurent Lemaitre,.

equation-defined components (voltage or frequency dependent),.

Qucs touchstone import manual#

parameter sweeps, powerful optimization algorithms, tolerance analysis and manual tuning with sliders.

Harmonic Balance analysis (including large-signal AC and noise analysis).

transient analysis (including periodic steady-state simulation).

s-parameter analysis (including noise parameter calculation).

user-defined components (time, frequency and mixed domain).

diode, photodiode, tunnel diode, SCR, triac, diac, OpAmp models,.

SGP, Statz, TOM3, HICUM, JFET, MOSFET models,.

microstrip, coplanar and stripline elements, Touchstone files as well as CITIfiles can now be converted into Qucs datasets using the command line converter Qucs-Converter.

all popular lumped, RF and digital components,.

# Hand-edit z.s2p and change the reference impedanceĬonvert-parameters -f S z.s2p converted. It's equivalent to converting to Z parameters with the first reference, then converting back with the second.Įdit (and self plug): if you have Linux or other POSIX environment such as cygwin, one of the examples that comes with libvna will do most of the work for you:Ĭonvert-parameters -f Z orig.s2p z.s2p # convert to Z s2p file, because the table values will be be wrong for the new reference.įor the case of real, positive reference impedances, you can convert S parameters in Z1 to S parameters in Z2, using the following conversion. Further, it won't help to change the reference impedance in the. This conversion can't be done with a simple linear scaling operation. The Z parameters for this network, regardless of the reference impedance, are. But if you have S parameters, it's not so simple.įor example, suppose your DUT is a simple T network 10dB attenuator for 50 ohms with R1=26.0 ohms on each arm, and R2=35.1 ohms to ground in the middle. Not specific to Qucs, just a general comment on renormalization - If you have Z, Y, G or H parameters, all you have to do is change the reference impedance at the top of the file and you're done.