https://orcid.org/0000-0002-1874-3844
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Abstract
Mutual interference between wireless devices in indoor environment reduces system performance. Ensuring secure personal communication within such wireless networks is also another important problem. Existing indoor surfaces can be converted to frequency-selective surfaces to avoid interferences among WLAN networks, as well as securing personal data. ISM signals of 2.4 and 5.8 GHz are intensively used in indoor environment. In this work, a novel band-stop periodic element geometry that attenuates incoming 2.4 and 5.8 GHz ISM signals for a wide range of incidence angles is presented. The achieved attenuation level is minimum 20 dB in the desired frequency bands. Optimization of the proposed geometry is achieved with an ease by using a novel multi-band FSS design technique which is based on nested geometries and miniaturizing.
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B. Döken
Bora Döken received his MSc and PhD degrees from Informatics Institute of Istanbul Technical University, Istanbul, Turkey, in 2010 and 2018, respectively. After working in various positions in the private sector, he became an instructor at the Istanbul Technical University in October 2007. He is currently involved in the areas of FSS, periodic structures, antennas, and metamaterials. Corresponding author. Email: [email protected]
M. Kartal
Mesut Kartal (M’91) received his MS degree in 1993 and PhD degree in 2000. Currently, he is a professor in the Istanbul Technical University, Department of Electronics and Communication Engineering. His research interests include remote sensing, inverse problems, RF and microwave design engineering, as well as modeling, design, simulations and analysis, and CAD techniques in high-frequency region. Email: [email protected]