A polarization diverse antenna for dual-band WLAN applications

A dual-band dual-polarized (DBDP) array antenna is proposed for wireless local area network (WLAN) applications. A four-element array is used to facilitate operation in both the standard WLAN frequency bands, while also incorporating the capacity to send/receive arbitrary orthogonal polarizations. The presented compact structure is characterized by wide bandwidths, average gains of 5.5 dBi and 7.0 dBi over the 2.4 and 5.2 GHz bands respectively, high F-to-B ratios, stable radiation patterns, as well as cross-polarization levels below 30 dB relative to the boresight.