Frequency Selective Surface Design in Wireless Communication

The use of low-emissivity or energy saving glass (ESG) has become very popular in the modern day building design.This energy saving property is achieved by applying a coating on one side of the glass which is made up of multiple layers of metal/metal oxides. This coating provides good thermal insulation to the buildings by blocking infrared signals while being transparent to visible part of the spectrum. Therefore,the visibility through the glass remains very good while the building can be kept warm for the longer period of time in winter. The reverse is true for summer. One of the drawbacks of energy saving glass is that it also fades / attenuates the transmission of useful microwave signals through them . These signals fall mostly within the frequency band of 600 MHz to 2100 MHz. UHF TV, GSM 900/1800/1900 MHz, personal communication for security, GPS, 3G, 4G, 5G mobile signals etc, all fall within the same frequency band. In order to pass these signals through the coated glass, frequency selective surface (FSS) can be used. In this presentation Dr Ghaffer Kiani explains techniques to solve the above mentioned issues by designing frequency selective surface for energy saving glass used in modern buildings.