Transmission Line Parameter Calculator

Application ID: 22351


Transmission line theory is a cornerstone in the teaching of RF and microwave engineering.

Transmission lines are used to guide waves of electromagnetic fields at radio frequencies. They exist in a variety of forms, many of which are adapted for easy fabrication and employment in printed circuit board (PCB) designs. Often, they are used to carry information, with minimal loss and distortion, within a device and between devices.

Electromagnetic fields propagate along transmission lines as transverse electromagnetic (TEM) waves. The Transmission Line Parameter Calculator app computes resistance (R), inductance (L), conductance (G), and capacitance (C) as well as the characteristic impedance and propagation constant for some common transmission lines types, such as a coaxial line, twin lead, microstrip line, and coplanar waveguide (CPW).

This application example illustrates applications of this type that would nominally be built using the following products:

COMSOL Multiphysics®