Black-box models using Z, Y, h or ABCD parameters.
A two-port is characterised by relations between port voltages and currents using Z, Y, h, ABCD or S parameters. Cascade uses ABCD matrices multiplication. Used for amplifiers, filters and transmission lines.
The ABCD matrix of a series impedance Z is [[1,Z],[0,1]].
Two-port models describe a network by its terminal behaviour, so you can connect circuits together without knowing their inside details.
Black-box models using Z, Y, h or ABCD parameters.
Two-port models describe a network by its terminal behaviour, so you can connect circuits together without knowing their inside details.
A network with two ports, each with a pair of terminals, where the current in each port matches the current in its partner.
They give a linear relation between port voltages and currents, so cascaded networks can be combined with simple matrix multiplication.
Typical applications include modelling an amplifier stage as a two-port in a larger chain, characterising a filter for use in a system simulation and describing a transformer with its impedance parameters.
Study "Frequency response and Bode plots" first (topic 48 of 106 in Electrical Engineering). It covers the groundwork this topic builds on.
Reciprocity. Input and output impedance. S-parameters for RF.
The ABCD matrix of a series impedance Z is [[1,Z],[0,1]].
The next topic is "Mutual inductance", which builds directly on this one.
It is classed as Intermediate in Electrical Engineering (topic 49 of 106). It is an intermediate topic. Work through the beginner topics in Electrical Engineering first.
Want to practise? Open the interactive course for quick checks, quizzes, simulations and progress tracking.