Design of tri band printed dipole

We present the design of a tri frequency dipole antenna. We propose a progressive design with a beginning with a single dipole antenna and then a dual band dipole and finally the design for a tri band frequency operation. For the design of all this antennas, we use the experiences of the laboratory with this kind of antenna and we don't need to realize simulation to obtain the good frequency operation. A first design was made with copper leaf and after a final prototype was realized with PCB. The measurements presented in this communication were made with the final prototype antenna.