Is possible to use EBG with small frequencies?

The doubt i have is if is possible to use this substrate at for example 900 Mhz?
And if the antenna is for some frequencies how can I choose the parameters, if they depends of the operation frequencies?
Thank you very much

You can find some stuff on EBG-Electromagnetic Bandgap-

http://www.tech2004.umd.edu/2004post...CE_Bandgap.pdf