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Single-phase pi-section transmission line.
Passive Components
The Pi-Section Line implements a single-phase transmission line with parameters lumped in pi sections.
A transmission line is characterized by a uniform distribution of inductance, resistance, capacitance and conductance along the line. However, in many cases these distributed parameters can be approximated by cascading multiple pi sections with discrete components. The figure below illustrates the electrical circuit used for the line model.
Let l be the length of the line and n the number of pi sections representing the line. The inductance L, the resistance R, the capacitance C and the conductance G of the discrete elements can then be calculated from their per-unit-length counterparts L0, R0, C0 and G0 using the following equations: