Shielding performances of ITO transparent windows: Theoretical and experimental characterization

The shielding performance of indium-titanium-oxide (ITO) thin film depends on the characteristics of the impinging electromagnetic field, on the geometry of the shield, and on the frequency range. In this paper, a complete experimental characterization of the shielding effectiveness of ITO transparent windows is performed by using three different approaches. The obtained results are compared in order to define the limit of applicability of each technique. In addition, numerical simulations are performed by applying the finite-difference time-domain method in order to assess the effects of the geometry of the test configuration on the obtained results.