ANALISA TANGGAPAN TEGANGAN DAN ARUS TERHADAP PERUBAHAN PARAMETER SALURAN TRANSMISI

Abstract

Transmission line is a media to transfer signal or power from one point to another. According to this context, any system of wire can be considered as a transmission line. However, transmission line actually was a group of lines that are arranged in a certain pattern. The arrangement was done uniformly in order to simplify the calculation, reduces cost, and increases convenience. The response (characteristic) in a transmission line depend on its parameters such as primary and secondary constants, load impedance, and also the condition of termination on the receiving end of the line. The value of primary and secondary constants determined by type of cable used, that are open wire, coaxial or paired telephone cable, and by the cable descriptions. Termination on the receiving end can be divided into matching (ZR = Zo) and mismatch impedance (ZR  Zo). In mismatch condition, load impedance could be a normal impedance that has certain value and also could be made zero or infinite. Cable description will affect the primary and secondary constants’ value such as the attenuation constant, phase shift constant, propagation constant and characteristic impedance, whereas the termination on the receiving end will affect the value and shape or phase of the incident and reflected voltage or current wave.