L-impedenza karatteristika hija għal sinjali AC (jew sinjali ta'-frekwenza għolja). L-impedenza karatteristika hija kunċett fit-trażmissjoni ta'-linja twila. Matul il-proċess ta 'trażmissjoni tas-sinjal fil-linja ta' trasmissjoni, f'punt fejn jasal is-sinjal, il-linja ta 'trażmissjoni u l-pjan ta' referenza jiltaqgħu. Jiġi ffurmat kamp elettriku, u minħabba l-eżistenza tal-kamp elettriku, jiġi ġġenerat kurrent żgħir istantanju, u dan il-kurrent żgħir jeżisti f'kull punt fil-linja ta 'trażmissjoni. Fl-istess ħin, is-sinjal għandu wkoll ċertu vultaġġ, sabiex fil-proċess ta 'trażmissjoni tas-sinjal, kull punt tal-linja ta' trasmissjoni jkun ekwivalenti għal reżistenza, u din ir-reżistenza hija l-impedenza karatteristika tal-linja ta 'trasmissjoni li semmejna.
The continuity of the characteristic impedance (ρ) basically depends on the stability of the ratio of the distribution parameters L{{0}} and C0. We all know Ohm's law: U=RI, where R is the resistance or resistance load, in ohms (Ω). Resistance is related to the resistivity (also known as conductivity) of metal materials, but in the process of high-frequency signal transmission, we also need to understand the transmission of the physical medium (such as twisted pair, coaxial wire, waveguide) that transmits high-frequency signals characteristics, which are different from low-frequency signals, this transmission characteristic is related to the conductive material of the transmission medium (such as copper or silver), conductivity (resistivity), geometry (most commonly cylindrical), distributed inductance (L0), distributed capacitance (C0), insulating material (dielectric constant), etc. are all related, but the influence of these distribution parameters and the dielectric constant of insulating material is often not considered during low-frequency signal transmission.
