Dual-band loop-loaded printed dipole array with a corporate balun/feed structure


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SONDAŞ A., UÇAR M. H. B., ERDEMLİ Y. E.

IET MICROWAVES ANTENNAS & PROPAGATION, vol.6, no.10, pp.1109-1116, 2012 (SCI-Expanded) identifier identifier

Abstract

A novel loop-loaded printed dipole (LLPD) antenna array is introduced for a dual-band operation at 3.0/5.5 GHz bands. As the loop elements placed on the dipole aperture provide the dual-band operation, a new corporate balun/feed structure is employed to achieve balanced and matched excitation for the array. The simulation and measurement results for 1 x 1, 2 x 2 and 4 x 4 LLPD array designs are presented, demonstrating quite well agreement. In particular, the 4 x 4 design offers better than 17% impedance bandwidth and a realised gain of at least 15 dBi with tolerable side-lobe levels at the designated frequency bands.