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Types of Transmission Lines
(a) Two wire transmission line:- This transmission line consists of a pair of parallel conducting wires separated by a uniform distance .These are used in power systems or telephones lines.
(b) Coaxial transmission line:- This consists of an inner and a coaxial outer conducting sheath separated by a dielectric medium . They are used as TV cables, telephones cables and power cables.
(c) Parallel plate transmission line or planar line:- It has two parallel conducting plates separated by a dielectric slab of uniform thickness
(d) Optical fibres transmission line:- It consists of core and cladding . Information passes through the core in the form of totally internal reflected TEM waves.