Computationally-effective wideband worst-case model of transmission line radiation

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

“…Good agreement of values derived at stages 1 and 2 indicates that it is possible to use results derived at stage 3 as etalon results (similarly to [9], [11]).…”

“…Consideration of these components is convenient in this case because properties of common-mode component emissions are significantly differ from properties of differential-mode. Calculation of the electromagnetic field radiated by the twisted pair is carried out by the following algorithm: 1) amplitudes of currents I S and I L in one wire of the twisted pair are computed in according to the method stated in [10]; 2) current waves' amplitudes are determined by amplitudes of the currents in according to [11]; 3) the electric and magnetic fields of the single wire are computed by the current waves' amplitudes [9]; 4) Amplitudes of the fields calculated for the single wire are multiplied by correcting factors C and D in order to account for the twisted pair radiation peculiarities:…”

“…where F 2 is estimation of amplitude of the electric (E) or magnetic (H) field created by the twisted pair, a is parameter determining the type of twisted pair terminations (b is balanced terminations, n is unbalanced terminations), F 1 is estimation of amplitude of the electric or magnetic field created by single wire (computed by models [11] and [9] The worst-case model enables to compute majorizing AFC F 2 (f ) of the field radiated by the twisted pair, in the observation point. Majorizing AFC is not lower than maximums of the etalon AFC (derived numerically).…”

“…Stage 2. Current waves' amplitudes are determined by current (calculated by MTL method) through the vertical grounding wire at the source [11]. Derived amplitudes of current waves are substituted in truncated model of the wire radiation [9].…”