Keywords:
- multiconductor systems;
- capacitive coupling;
- partial-capacitances
Abstract
In the analysis of electrostatic-field problems for multiconductor systems with
n + 1 conducting bodies immersed in dielectric media, the capacitive coupling effects among conductors can be described by means of a partial-capacitance scheme consisting of a network of
n(
n + 1)/2 capacitors, each one linking each conductor pair. From a physical viewpoint, each capacitor is usually associated with the existence of lines of force of the displacement field vector
D from one conductor to another. In this paper, we show that such a physical interpretation not only cannot be taken literally, but also, above all, can be a misleading one. If care is not taken, computation procedures based on
D-field integration may lead to a wrong evaluation of the partial-capacitance scheme. For illustration purposes, a very simple example of a symmetric three-conductor system with odd-mode excitation is analyzed. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 346–349, 2005; Published online in Wiley InterScience (
www.interscience.wiley.com). DOI 10.1002/mop.21166