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International Journal of Antennas and Propagation
Volume 2015 (2015), Article ID 505123, 7 pages
http://dx.doi.org/10.1155/2015/505123
Research Article

A Compact Wideband Dual-Polarized Antenna with Harmonic Suppression Using Nonuniform Defected Ground Structure

Comelec Department, Institut Mines-Télécom, Télécom ParisTech, LTCI CNRS UMR 5141, 46 rue Barrault, 75634 Paris Cedex 13, France

Received 13 June 2014; Revised 23 August 2014; Accepted 10 September 2014

Academic Editor: Renato Cicchetti

Copyright © 2015 Lana Damaj et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A wideband dual-polarized coplanar waveguide (CPW) fed antenna integrating a wide stop-band filter is presented. The designed filter is based on a nonuniform defected ground structure (DGS) in order to obtain a wide stop-band and a compact size. This filter is used to reject harmonics and spurious radiation arising from the RF front end. The complete structure (antenna and filter) has been optimized to have a compact size of ( being the free-space wavelength at the lowest operating frequency). The realized antenna operates in the frequency range between 2.7 GHz and 5.9 GHz (bandwidth of about 74%). The isolation between feeding ports is more than 18 dB. The complete structure has a wide stop-band characteristic (103%) for harmonic rejection. The simulated numerical results have been confirmed with measurements.