Numerical analysis of cylindrical dipole antennas using an auxiliary sources model

Papakanellos, PJ; Capsalis, CN

dc.contributor.author	Papakanellos, PJ	en
dc.contributor.author	Capsalis, CN	en
dc.date.accessioned	2014-03-01T11:44:35Z
dc.date.available	2014-03-01T11:44:35Z
dc.date.issued	2003	en
dc.identifier.issn	0920-5071	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/37016
dc.subject	Numerical Analysis	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Cylindrical antennas	en
dc.subject.other	Electric field effects	en
dc.subject.other	Mathematical models	en
dc.subject.other	Surface properties	en
dc.subject.other	Cylindrical dipole antennas	en
dc.subject.other	Dipole antennas	en
dc.title	Numerical analysis of cylindrical dipole antennas using an auxiliary sources model	en
heal.type	other	en
heal.identifier.primary	10.1163/156939303767868900	en
heal.identifier.secondary	http://dx.doi.org/10.1163/156939303767868900	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	In this paper, the problem of the radiation from a circular cylindrical dipole antenna, which is either symmetrically or asymmetrically fed by an idealized voltage source, is analyzed using the method of auxiliary sources (MAS). This method is applied by introducing a set of fictitious sources carrying unknown currents inside the dipole for the direct description of the radiated electromagnetic (EM) field. The unknown currents are determined by imposing the electric field continuity boundary conditions on the physical surface of the dipole. The solution is formed using spatially overlapped small smusoidal dipoles, instead of elementary dipoles that are usually used in conventional implementations of current-model based techniques. It is shown that this choice leads to a significant acceleration in the rate of convergence of the solution and, as a direct outcome, to a noteworthy reduction of the relevant computational cost. Since the currents of the fictitious sources are determined, various quantities of great theoretical and practical interest, are readily computable. Several examples illustrating the well-behaved convergence of the proposed method are presented, concerning various geometrical configurations. In each case, the accuracy of the resultant solution is verified by checking the stability of the input impedance/admittance of the dipole for an increasing number of fictitious sources and comparing the computed values with previously published data.	en
heal.publisher	VSP BV	en
heal.journalName	Journal of Electromagnetic Waves and Applications	en
dc.identifier.doi	10.1163/156939303767868900	en
dc.identifier.isi	ISI:000184004300001	en
dc.identifier.volume	17	en
dc.identifier.issue	3	en
dc.identifier.spage	389	en
dc.identifier.epage	407	en