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Dr. Andrei Muller, progenitor of the world's first
Chart™ software program, has teamed with a handful of able colleagues
to release a commercial version of this paradigm-changing design and analysis tool.
The following press release was issued on July 17, 2019.
Example of one of these new features showing a 3D frequency sweep
representation over S11. The paths of the 2 nH inductor and −2 pF capacitor
represented between 1 and 3 GHz.
3D Smith Chart representation for the shunt inductance and quality
factor for different inductors within 1-16 GHz. As the inductance becomes negative
it enters the 3D Smith Chart interior. The quality factor is represented as a generalized
cylinder for each frequency point around the corresponding inductance
Many New Features Added
3D Smith Chart™ announces a new version (1.02) of the 3D Smith Chart with
new features. The original 3D Smith Chart tool (version 1.01) extended the Smith
Chart capabilities for the first time since the 1939s to make it usable for circuits
with negative resistance based on a unit sphere that plots circuits with reflection
coefficient magnitudes larger than 1 by mapping them as arcs on the 3D sphere. The
South represents active areas with negative resistance, North areas represent passive
with positive resistance, East inductive, and West capacitive. (North Pole: perfect
match, South Pole infinite mismatch).
3D frequency (live) sweeping representation (for visualizing
the dynamics of the S parameters variation). For example, negative capacitances &
positive inductances can be directly distinguished due to their opposed frequency
sweeping orientation. Furthermore, no uncertainty on the sweeping range start &
end points occurs now while interpreting the results.
Unique inductor quality factor visualization over the S11 parameters
in 3D, 3D inductance display over the S11 parameter and Q as a generalized
cylinder of a radius corresponding to its normalized value for each frequency point.
Different models of definitions are used (shunt inductor model, series inductor
Several improvements in terms of rendering/visualizations,
helpful both in actual design and learning the 2D Smith and 3D Smith Chart concepts
(axes system, "Greenwich" constant resistance meridian, surface transparency, etc.).
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas
and reference material while performing my work as an RF system and circuit design engineer.
The Internet was still largely an unknown entity at the time and not much was available
in the form of WYSIWYG
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