Antenna Design for RFID UHF system

Dear all,

I am working on a RFID project for SCM.

I have taken up a chellenge to design a directional antenna so that I can scan the goods moving out of a gate (aprox 3 Meters wide).

I am new to RF field and I do realise this is not a right point to enter the field but this is all that I have to do.

I even got Ie3D for this purpose but can't figure out how to start using the same.

Can some body guide me thru this project.
I want to learn all about RF slowly, and I think this the right space to do the same

Please help.

Thanx in advance
Vicky

Hi,
first some send some RFID structure to me .i will tell u the procedure to work that model.like wise u can start your work.