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Impedance matrix of a folded dipole pair under eleven configuration

Jian Yang (Institutionen för signaler och system, Antenner) ; Daniel Nyberg (Institutionen för signaler och system) ; J. Yin
IET Microwaves, Antennas & Propagation (1751-8725). Vol. 4 (2010), 6, p. 697-703.
[Artikel, refereegranskad vetenskaplig]

A new decade wideband antenna, the Eleven antenna, has been developed during the last years. The basic configuration of Eleven antenna is two parallel dipoles separated by half wavelength above the ground plane, which is referred to as the eleven configuration. In order to cascade the dipoles in log-periodic array for obtaining wideband performance, folded dipoles are often used. The input impedance of shorted folded dipole in free space has been analysed by using two-mode method: a transmission line mode and an antenna mode. In the present study, the impedance matrix of a pair of folded dipoles as a two-port network under the eleven configuration will be analysed by including the mutual coupling among elements of folded dipoles into the two-mode method. As veri. cation, an Eleven antenna with one pair of folded dipoles has been analysed by the present method, modelled in a commercial software - CST MS and manufactured. The results by using the present method agree well with the measured and simulated one.

Nyckelord: transmission-line model

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Denna post skapades 2010-07-16. Senast ändrad 2011-01-17.
CPL Pubid: 123884


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Institutioner (Chalmers)

Institutionen för signaler och system, Antenner (2005-2014)
Institutionen för signaler och system


Informations- och kommunikationsteknik
Elektroteknik och elektronik

Chalmers infrastruktur