Impedance matrix of a folded dipole pair under eleven configuration
Journal article, 2010

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.

transmission-line model


Jian Yang

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Daniel Nyberg

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

J. Yin

Norwegian University of Science and Technology (NTNU)

IET Microwaves, Antennas and Propagation

1751-8725 (ISSN)

Vol. 4 6 697-703 IMAPCH000004000006000697000001

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering



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