IEVref: 103-10-19 ID: Language: en Status: Standard Term: attenuation coefficient Synonym1: Synonym2: Synonym3: Symbol: α Definition: real part of the propagation coefficient $\alpha =\text{Re}\underset{_}{\gamma }$Note 1 to entry: For a transmission line the attenuation coefficient is the limit of the quotient of the relative change of a field quantity between two points on the axis by the distance between the points, when this distance tends to zero. Publication date: 2009-12 Source: Replaces: Internal notes: 2017-02-20: Editorial revisions in accordance with the information provided in C00020 (IEV 103) - evaluation. JGO CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: