How can we obtain the s-parameters data with non-50 normalization?
How can we obtain the s-parameters data with non-50 normalization?
On IE3D, we obtain the 50-ohm normalized s-parameters automatically. However, we would like to obtain non-50 ohm normalized s-parameters. For example, for differential pair design, we may want the 100-ohm normalized s-parameters.
IE3D saves s-parameters into Touchstone format with default 50-ohm normalization impedance. To get the s-parameters not normalized to 50-ohm, you can do the following: On MODUA, select FILE->DISPLAY PARAMETER MODULE and select the file of interests. Select CONTROL->DEFINE DISPLAY DATA. Pick dB and Phase of S-Parameters and select OK. Check the items you want to display. Select OK, you will see the tabulated s-parameters on MODUA. Optionally, you can select VIEW->GRAPH PARAMETERS to change the valid digits for the data. Select CONTROL->TERMINATING IMPEDANCE to change the normalization impedance for each port. Select FILE->SAVE DISPLAYED DATA to save the re-normalized s-parameters into a data file for post processing.
About Jian Zheng
Dr. Jian-X Zheng received the B.S. and M.S. degrees in electrical engineering from Tsinghua University, Beijing China, in 1984 and 1986, respectively, and a Ph.D. degree in electrical engineering from the University of Colorado at Boulder in 1990. He founded Zeland Software, Inc., specializing in 3D full-wave EM simulation products, in 1993. Dr. Zheng has been leading development of the IE3D Full-Wave EM Design System for a broad range of high-frequency and wide-band electronic design applications. Dr. Zheng has more than 26 years of experience developing full-wave EM technologies.
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