AtaiTec Corp.

The Signal Integrity Company

1427 Royal Ann Ct.
San Jose, CA 95129
ph: 408-597-7188
info@ataitec.com

SI Software

Our software ADK, x2D, SI3D, and ISD can help, if you want to do any of the followings:

Compute S parameters of complex 3D structures
Compute optimized TX tap coefficients, run channel simulation, and plot eye diagrams
Convert S parameters into equivalent SPICE models
Convert SPICE models into S parameters
Define PCB stackup and trace width/spacing for impedance control
Speed up full-wave simulation of symmetric structures by up to 8x
Create W-element transmission line models
Assemble multiple 4-port measurement data into one Touchstone file
Fill in DC and correct passivity and causality violation in Touchstone files
Convert S parameters into TDR/TDT waveforms
Equate S parameters to frequency-dependent impedance and delay
Change S parameters to different reference impedance
Convert single-ended S parameters into mixed-mode S parameters, and vice versa
Cascade or de-embed S parameters
Identify from- and to-port connection in multi-port Touchstone files
Extract part of Touchstone files
Interpolate or extrapolate S parameters
Plot S parameters from multiple Touchstone files
Compare with IEEE 802.3ap and other specs
Create model library for IC parasitic extraction
De-embed test fixture in VNA measurement
and more...

Advanced SI Design Kits (ADK)
Everything you want to do with S parameters in one place
ADK is a comprehenive set of SI utility tools to simplify many commonly encountered SI tasks to a single mouse click. ADK has been used daily for many years in major hardware companies. With ADK, new graduates can be trained to perform the tasks of middle-level SI engineers within a day.
Example 1
ADK corrects causality violation and outputs new Touchstone files for better channel simulation and impedance reading. Note how much the S parameters can change after causality correction.
Example 2
Converting S parameters into equivalent HSPICE models is just one mouse click away. Attempts to curvefit non-causal models will be futile. ADK's causality correction ensures that the curvefitted models are also valid beyond the original frequency range.
Example 3
Going from S parameters to optimized TX tap coefficients and eye diagram is again only one mouse click away.
Example 4
ADK's "smart extrapolation" helps many circuit simulators run smoothly and correctly.
x2D
Most accurate 2D field solver
x2D is a 2D RLGC field solver, based on boundary element method (BEM), that has been correlated with numerous actual measurements. Layered structures are entered directly through GUI. Arbitrary structures can also be easily specified through user-defined files or built-in templates. W-element models and a detailed report, including differential and common mode impedance, are provided.
SI3D
Novel 3D SI solver for connector and cable design
Ideal for rapid design iteration, SI3D is a novel 3D SI tool that computes S parameters of complex 3D structures in minutes, instead of days. For example, a 60-port connector model can be imported in .sat, .stp, or .igs format, and simulated on a laptop in less than 5 minutes. SI3D has been found to provide more accurate return loss and impedance profile in many cases than well-known 3D full-wave solvers.
In Situ De-embedding (ISD)
Patent-pending tool to replace TRL calibration
ISD is a patent-pending de-embedding tool to replace TRL calibration and help save SMAs and board material, while providing causal and more accurate DUT results. See SI Measurement for more details.