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Excuse me, what is the difference between S parameter and S parameter, dB ？

Posted Apr 25, 2019, 9:11 p.m. EDT RF & Microwave Engineering Version 5.4 1 Reply

Yang Cheng
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What is the calculation formula for the two types of parameters？

1 Reply Last Post Apr 26, 2019, 5:51 p.m. EDT
Robert Koslover Certified Consultant
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Posted: 6 years ago Apr 26, 2019, 5:51 p.m. EDT

In general, an S parameter is a complex number. In contrast, when an S parameter is expressed in dB, it is taken as 20 times the Logarithm (base 10) of the magnitude of S, or 20*Log|S|.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
In general, an S parameter is a complex number. In contrast, when an S parameter is expressed in dB, it is taken as 20 times the Logarithm (base 10) of the magnitude of S, or 20*Log|S|.

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