Marq Kole
Junior Member
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Posts: 11
Eindhoven, The Netherlands
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Geoffrey_Coram wrote on Aug 29th, 2006, 8:32am:Ken Kundert wrote on Aug 28th, 2006, 8:49am:3. It is not very useful; there are very few models that are both easy to describe in the frequency domain and hard to describe in the time domain. I can howeer see Marq's point that, for an "instrumentation module" ie one that prints out information about the circuit, it is nice to be able to print the frequency value. I could imagine providing a %code to give the frequency. I've been giving this some thought: with respect to the model safety aspects and limited to small-signal frequency domain, I can only see two extensions: - display format codes that allow one to output AC values of signals - but you might want additional formatters for getting polar representation, or only real part, imaginary part, phase or magnitude,
- built-in S-parameter and Y-parameter models, along the lines of the Spice primitives mentioned in Annex E, using either a file or array just like the $table_model.
I really like these instrumentation modules because they allow me to compare the results in various simulators. Think of compact model development or IP library development.
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