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

Abstract

A computationally-effective model for radiation of a rectilinear twisted pair placed above a conduct- ing screen is proposed. The model is intended for diagnostics (express analysis) of unintentional inter- ference 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 vali- dated by comparison with numerical simulation re- sults 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 obser- vation point was located above the screen from 4 cm to 2 m away from the center of the twisted pair in arbitrary direction.