Wideband computationally-effective worst-case model of twisted pair radiation

A computationally-effective model for radiation of a rectilinear twisted pair placed above a conducting screen is proposed. The model is intended for diagnostics (express analysis) of unintentional interference in large complexes of radio and electronic equipment and makes it possible to compute the worst-case amplitude-frequency characteristics for electric and magnetic fields. The model was validated by comparison with numerical simulation results in the frequency band from 10 MHz to 1.2 GHz (for balanced feed and load) and from 300 kHz to 1.2 GHz (for unbalanced terminations), the observation point was located above the screen from 4 cm to 2 m away from the center of the twisted pair in arbitrary direction.