encouraging result since the conductivity of other conductingpolymer films can achieve 10 4 to 10 5 S/m [10].We think that use of conducting-polymer for the design of resonating structures is more convenient for high frequencies (for example, millimetric-band), since the dimensions of the realized structures are smaller, which reduces the interaction of the microwave field with the conducting-polymer materials, and then reduces the losses of electromagnetic energy.Finally, the measured results are satisfying with regard to the matching, bandwidth, and gain for a Pani-film of conductivity 6000 S/m and permittivity 6000. However, further improvement is needed in the synthesis process of Pani-solutions in order to fabricate higher and more stable conducting-films, and in the fabrication process [11] in order to realize antennas with better characteristics. Prior to the printing process, it is usually necessary to make some ink modifications to determine the influence of the concentration of ink, printing speed, and pressure at the printing nip on the printing quality.