Special transmission problems in solid dielectric h.f. cable

Formulae are derived for the standing wave ratio at any point along a h.f. transmission line using solid dielectric, from which it appears that the total normal attenuation of any transmission line may be obtained simply by measuring the input standing wave ratio when the far end has complete reflection, i.e. when it is terminated in open circuit, short circuit, or a completely reactive load. Calculation of the additional losses introduced into a transmission line due to load mismatch shows that where the normal attenuation is negligible the additional loss due to any amount of mismatch is also negligible. Where, however, the normal attenuation and the load mismatch are large, the additional loss due to this mismatch may be appreciable. Power dissipation in solid dielectric cables is briefly discussed.