Energy-Saving Glass (ESG) is a specially coated glass with metallic oxide coating to maximize blocking of infrared and ultraviolet radiation into buildings. These are called low-emissivity or energy-saving windows since the metallic oxide coating on one side of the glass can reflect most of the incident infrared power. This coated glass acts as a filter for electromagnetic radiations in the infrared region, while being totally transparent to the visible part of the spectrum. Due to this property of coated glass, thermal insulation is obtained inside the buildings. However, it has several drawbacks where one of the major is the attenuation of the transmission of useful microwave signals and radio frequency (RF) signals, such as Global System for Mobile Communication (GSM) and personal communication signal, which leads to poor communication inside the building. Therefore, in order to overcome this problem, several solutions have been determined; where the first solution is to etch the structure design shape on the coated side of the glass by applying a regular shape, while the second solution is by using the different types of regular shapes as a combined shape on the coated glass developed by commercial software.