PCB Stripline Impedance Calculator

A stripline transmission line is similar to a standard stripline transmission line, but has round conductors. Modeling approximations can be used to understand the impedance of a stripline transmission line.

Description

A wire stripline is constructed with a round conductor suspended between two ground planes. The conductor and ground planes are separated with a dielectric. This calculator assumes the distance between the two reference planes to be an equal distance.

Microstrip Transmission Line Models

The impedance Z0 of a transmission line consisting of a circular signal conductor having a diameter d and centered between parallel ground planes separated by a distance h is given by:

Eq. 1

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Impedance calculation

Microstrip impedance shall be calculated according to above Eq. 1