This paper presents a dual-band dual-polarized antenna array design for WLAN applications. Four double-dipole elements are orthogonally interleaved to facilitate operation in both the standard WLAN frequency bands (IEEE 802.11b and IEEE 802.11a) simultaneously. The two linear polarizations have separate ports. The presented design is characterized by dual-band operation, reasonably good front-to-back ratios, average gains of 5.2 dBi and 6.2 dBi over the 2.4 and 5.2 GHz bands respectively, stable end-fire radiation patterns and very low cross-polarization levels.
2. Piechocki, R., P. Fletcher, A. Nix, N. Canagarajah, and J. McGeehan, "A measurement based feasibility study of space-frequency MIMO detection and decoding techniques for next generation wireless LANS," IEEE Trans. Consumer Electr., Vol. 48, No. 3, 732-737, 2002.
3. Das, N. K., M. Shinozawa, N. Miyadai, T. Taniguchi, and Y. Karasawa, "Experiments on a MIMO system having dual polarization diversity branches," IEICE Trans. Commun., Vol. e89-b, 2522-2529, 2006.
4. Targonski, S. D. and D. M. Pozar, "Dual-band and dual polarized printed antenna element," Elect. Lett., Vol. 34, No. 23, 2193-2194, 1998.
5. Pokuls, R., J. Uher, and D. M. Pozar, "Dual-frequency and dual-polarization microstrip antennas for SAR applications," IEEE Trans. Antennas Propagat., Vol. 46, No. 9, 1289-1296, 1998.
6. Eldek, A. A., "Ultrawideband double rhombus antenna with stable radiation patterns for phased array applications," IEEE Trans. Antennas Propagat.,, Vol. 55, No. 1, 84-91, 2007.
7. Steyn, J. M., J. W. Odendaal, and J. Joubert, "Double dipole antenna for dual-band WLAN applications," IEEE Microw. Opt. Tech. Lett., Vol. 51, No. 9, 2034-2038, 2009.