Abstract
Transparent conductive films are used to the energy saving windowpane for the excellent solar enagy reflection characteristic. Radio waves are almost reflected by such high conductive filmes and cause radio interferences sometimes. Dividing a conductive film we can control the reflection. Modelling of the separated stripe-like films to ultra thin ellipse poles and using the method of image, we calculate the transmitance and reflectance. We studied the relation between the transmission characteristics and each parameter of the separated films. The characteristic in frequency is mainly controlled by the width of the film and the dielectric constant of the substrate. The sheet glass of sevral mm in thickness with a divided film of 1 cm in width, transmits radio waves up to about 1 GHz.