Design And Analysis Of Microwave Transmission Glass By Using Complementary FSS

• Main Author: Md Fauzi, Noor Azamiah
• Format: Thesis
• Language: English; English
• Published: 2018
• Subjects: T Technology (General); TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utem.edu.my/id/eprint/23318/1/Design%20And%20Analysis%20Of%20Microwave%20Transmission%20Glass%20By%20Using%20Complementary%20FSS.pdf; http://eprints.utem.edu.my/id/eprint/23318/2/Design%20And%20Analysis%20Of%20Microwave%20Transmission%20Glass%20By%20Using%20Complementary%20FSS.pdf; http://eprints.utem.edu.my/id/eprint/23318/; http://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=112304

The rapid development of communication system has witnessed changes from signal transmitted physically to signal transmitted via microwave.However,the effects of microwaves to the environment has also raised concern to community even when the applications of the modern wireless communication systems have offered many benefits.Thus,several solutions to overcome that problem have been made in the technology such as Frequency Selective Surface (FSS).FSS can exhibit the characteristic band stop and band pass filters which can allow or block the electromagnetic waves.The aim of this research is to design,simulate and analyze new FSS structure based on complementary structure for Global System for Mobile Communication (GSM) and Wireless Local Area Network (WLAN) applications.There are few parameters in this project that had been analyzed such as reflection coefficient,transmission coefficient and the impedance of FSS.The basic shapes of FSS such as square,circle and rectangular had been designed to produce the frequency pass band.The design structure of FSS was designed based on materials FR4 and glass. Design A has two designs; Design A1 (circle) and A2 (square).The designs that produce the best reflection and transmission coefficient is Design A1.9 with -20.981 dB and -0.179 dB compared to other designs.Meanwhile,Design B has three types;the combination of two circles (Design B1), the combination of two squares (Design B2) and the combination of circle and square (Design B3).This design has been designed based on Design A but a square loop was added at the outer FSS.The best reflection and transmission obtained from Design B is Design B2 with -16.152 dB and -1.281 dB. The triband FSS (Design C) has been designed by the combination of double square loop and the combination of two circles.The complementary FSS of Design D1 and D2 has been designed based on Design B2 and C with a parallel line at the back side.The result revealed that a new band is created when the complementary FSS is used.In addition,the reflection coefficient also increased for Design D2 compared to Design C at frequency response 2.4 GHz and 5.2 GHz with -16.045 dB compared to -12.592 dB and -12.584 dB compared to -10.873dB.When the reflection coefficient increased, the bandwidth also increased from 201.39 MHz to 306.52 MHz and 390.53 MHz to 532.9 MHz.In addition,the mathematical modeling for the impedance modeling has been done in certain frequency response for all FSS designs.The application of this design is suitable for green smart house or in modern office building.