Design of compact High gain dipole Antenna

Hi all!

A normal dipole has a gain of 1.6dBi..right ?

This stacked dipole has a a gain of 9dBi:

http://actility.thingpark.com/thingp...bi-868mhz.html

but its kinda big....

I want to design a compact high gain antenna with the use of meta material as described in this document:

http://citeseerx.ist.psu.edu/viewdoc...=rep1&type=pdf

Does anyone has experience with this ?
Anyone who has acces to 3D simulation software ?

Thanks in advance!