Papers on WiFi dual band antenna which covers 2.4GHz and 5GHz bands

Hello All,

Can anybody give me suggestions or papers on Wi-Fi Dual band antenna which covers both 2.4GHz and 5GHz bands?

Advance thanks

Sekhar

http://ma.icu.ac.kr/conference/2007_...%20antenna.pdf
http://journals.tubitak.gov.tr/elekt...1-8-0801-6.pdf
http://www.ece.uci.edu/rfmems/public...C089-APS04.pdf
http://www.ctvr.ie/docs/RF%20Pubs/Am..._IWAT_2005.pdf

Dear Vodafone,

Thanks a lot for the information.

Sekhar