Characteristics

Characteristics of a shielded line: The coaxial lines used for the transmission of electromagnetic waves consist of an external conductor of cylindrical shape, with an inner conductor arranged along the axis of the former. The two conductors are separated by dielectric material of suitable features.

lab Manuals

Characteristics of a shielded line: The coaxial lines used for the transmission of electromagnetic waves consist of an external conductor of cylindrical shape, with an inner conductor arranged along the axis of the former. The two conductors are separated by dielectric material of suitable features.
One of advantage of this kind of lines in that these lines are intrinsically self shielding, due to the geometry of arrangement of two conductors. Moreover the shielding features of the coaxial lines improve when the frequency increases.

First Demo Article

If the line is supplied with a pulsed signal and the line is not matched at the ends, the pulses sent in to the line will more or less reflected as a function of the mismatch. The reflected fraction of the pulse moves along the line in the opposite direction to the impedance of generator it is again reflected to the other end. The purpose of this test is to study the propagation of the pulse edges along the line, under different matching conditions viz open line, short circuit line & matched line.