2. The main property of a filter: its attenuation
2.1 Introduction to S parameters
An electromagnetic interference filter is characterized by its attenuation (as a passive component is by its impedance). The attenuation of a filter is expressed in decibels and is measurable through its parameter S 21 . This parameter corresponds to the transmission coefficient between the filter's input and output. The parameter matrix S can be described as the ratio of incident a i (equation (1) ) and reflected b i (equation (2)...
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The main property of a filter: its attenuation
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