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Dual-band, dual-circularly polarised antenna element

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2 Author(s)
Dorsey, W.M. ; Radar Div., U.S. Naval Res. Lab., Washington, DC, USA ; Zaghloul, A.I.

A dual-band element that operates with dual-circular polarisation in two separate industrial, scientific and medical bands is presented. The design that is based on concentric square slot/shorted-ring configuration is realisable in cost-effective printed circuit board technology making it attractive for low-cost personal communications devices. The antenna element provides a flexible topology that allows for convenient, independent control of the polarisation and impedance bandwidth of two distinct frequency bands with no fundamental limitation on the ratio between the high- and low-band frequency ranges. The topology of this element is presented, and the antenna concept is validated via simulated and measured results.

Published in:

Microwaves, Antennas & Propagation, IET  (Volume:7 ,  Issue: 4 )