RF.Spice is the âRF Editionâ of [[B2.Spice A/D]]. In other words, it is an enhanced superset of [[B2.Spice A/D]] with an extensive library of RF devices that include S-parameter-based [[Multiport Networks|multiport networks ]] and a variety of generic and physical transmission line types.
* The node-locked licenses of the two programs are different.
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==RF circuit analysis==
RF circuit analysis, by nature, is an AC analysis running at high frequencies typically ranging from tens of Megahertz to tens of Gigahertz. The RF devices of RF. Spice are characterized and modeled based on their frequency-domain scattering (S) [[parameters]]. The S-[[parameters]] are tabulated as a function of frequency and interpolated in between the frequency samples. RF.Spice performs an AC analysis of these RF devices by converting their S-[[parameters]] to Y-[[parameters]] and using them in conjunction with the SPICEâs nodal admittance matrix formalism. As a result, you can mix RF devices with all the other analog and mixed-mode devices of [[B2.Spice A/D]] in your circuits.