Since we're talking about filters here, it's worth recalling the main parameters that characterize a filter. A filter is generally a "two-port" component, or even three or four ports if the circuit is differential on input and/or output.
A filter can be characterized by its matrix of electrical admittances [Y]
or by its matrix of electrical impedances [Z], or by an electrical transfer matrix [T]
. All can be deduced from each other (see figure
1
).
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You can easily identify them thanks to this pictogram:
Similarities and differences between electroacoustic filters
