Statistical characterization of multiconductor transmission lines illuminated by a random plane-wave field

This work addresses the problem of field coupling to multiconductor transmission lines (MTLs) by means of a statistical approach. Currents induced in the MTL loads are regarded as random variables, depending on random amplitude, polarization, and direction of incidence of an offending plane wave. The aim is to identify some statistical properties of the current magnitude in the line loads. Influences of MTL geometrical parameters and load configurations on the statistical properties of the currents induced in different MTL wires are investigated. In particular, a bundle- and a bus-like configuration are analyzed and compared from the point of view of external susceptibility. For low frequencies, the consistency of statistical estimates is supported by analytical considerations.