Design of RF/Microwave efficient buildings using frequency selective surface

A band-pass frequency selective surface (FSS) which is designed on energy saving glass (ESG) with a layer of hard coating to improve the transmission of RF/Microwave signals through modern buildings is presented. A square loop and top loaded cross dipoles FSSs are combined to produce a dual band-pass filter, to improve the transmission of the most common UMTS and Wi-Fi signals, while maintaining the IR insulation properties of the ESG. An optimized design is presented, which attenuates less than 10 dB within the required microwave bands, while only reducing both the total coating area and IR attenuation by 12.35%. A stable response is achieved between 0° – 60° incident angles, for both TE and TM polarizations. Parametric studies on geometrical dimensions, substrate permittivity and thickness also help clarify the effects of these parameters upon the overall performance of FSS on hard coating ESG and the process of FSS design optimization.

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