Thanks planar metamaterials,
I have the basic understanding of TL and have designed a number of horn and patch antennas. I am just new to reflectarray antennas. Just started it as its my new task. can you refer me to some good material regarding RA antennas and unit cell specially. Any help, tutorial, is appreciated. actually i am getting the phase response but its not correct. plus which software should i use, CST or HFSS for this, i know how to use both but still which one is recommended.
Regards