What is de-embedding?
Each port in a circuit analyzed by em introduces a discontinuity into the analysis results. In addition, any feed transmission lines that might be present introduce phase shift, and possibly, impedance mismatch and loss. Depending upon the nature of your analysis, this may or may not be desirable. De-embedding is the process by which the port discontinuity and transmission line effects are removed from the analysis results.
To summarize, this algorithm performs the following analysis steps when enabled:
Calculates port discontinuities.
Removes effects of port discontinuities from analysis results.
Optionally shifts reference planes (removes effects of feed or port transmission lines from analysis results).
Calculates transmission line parameters Eeff and Z0.
Run em with de-embedding enabled whenever you do not want to include the effects of port discontinuities in your analysis results. The De-embed option is selected by default in the analysis controls.
The em de-embedding algorithm
is described in detail in the ''De-embedding''
and ''De-embedding Guidelines'' chapters
of the Sonnet User's Guide.
