Propagation on a two-conductor transmission line
Électronique impulsionnelle

In this section, we propose to study propagation on a two-conductor transmission line. To do this, we make the following assumptions:

• the line is made up of two cylindrical metal conductors with an Ox axis (there is no flaring or narrowing of the structure);

• the space between the two conductors is filled by a single homogeneous dielectric, with dielectric constants ε and µ (relative constants: ε_r = ε /ε₀ and µ_r = µ /µ₀) ;

• propagation along the line is assumed to be TEM (transverse electric-magnetic) (sinusoidal regime), which means that the transverse dimensions of the line are smaller than the wavelength.

• Equivalent diagram of a section of line

  Consider a section of line, of length dx, between x and x + dx. The equivalent diagram is shown in figure...