On the Concept of Grounding Impedance of Multipoint Grounding Systems (CROSBI ID 214269)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Čavka, Damir ; Rachidi, Farhad ; Poljak, Dragan
engleski
On the Concept of Grounding Impedance of Multipoint Grounding Systems
An N-port equivalent circuit approach is adopted to model a multipoint grounding system, N being the number of injection points. A methodology is proposed to determine the parameters of the N-port equivalent circuit from either numerical simulations or experimental measurements. For the case of a symmetrical grounding system, analytical closed-form expressions are derived for the equivalent parameters of the N-port circuit. We show that the concept of the equivalent input impedance (harmonic impedance) could be used in the case of a symmetrical multipoint grounding system. We show also that the experimental evaluation of the impedance of a grounding system using a single injection point is a conservative engineering practice, since the obtained impedance might be overestimated at high frequencies.
Antenna model; equivalent harmonic impedance; frequency domain; GB-IBEM; multipoint grounding system
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Podaci o izdanju
56 (6)
2014.
1540-1544
objavljeno
0018-9375
10.1109/TEMC.2014.2341043