Two Port Networks

An electrical network with two separate ports for input and output.

Port

A pair of terminals through which current may enter or leave a network.

Parameters

Z parameters

Denoted by . Aka. open-circuit impedance parameters.

Y parameters

Denoted by . Aka. short-circuit admittance parameters.

Transmission parameters

Denoted by . Aka. ABCD parameters.

Here:

• - Open circuit transfer function. Dimensionless.
• - Short circuit transfer impedance.
• - Open circuit transfer admittance.
• - Short circuit current ratio. Dimensionless.

Reciprocal network

A network is said to be reciprocal if .

Hybrid parameters