Triple-Band Frequency Selective Surface Design Effective Over Oblique Incidence Angles for GSM System

Abstract

A novel triple-band frequency selective surface (FSS) as a band stop filter in Global System for Mobile communication (GSM) frequencies is presented. Unit cell of the FSS consists of two isolated resonators, one square loop resonating at 942 MHz and another synthetic resonator in the same layer having resonant frequencies of 1842 and 2142 MHz. The synthetic resonator consists of two similar geometries which are coupled to each other by slim gaps in a way that each resonance arises through the joint lengths of both of the geometries. Therefore, these dependent resonators simply provide frequency tuning ability in those very closely spaced frequencies. Moreover, very low-frequency response sensitivity to the oblique incidence angles is achieved by using a miniaturized single synthetic resonator for the two frequencies in a single layer. A desirable 20 dB attenuation in the transmission characteristics is achieved at all frequencies of the GSM system with stability for oblique incidence for both TE and TM polarizations.

KEYWORDS:

• Arrays
• Bandstop filters
• Frequency selective surface
• GSM
• Resonators
• Triple band

Additional information

Funding

This research has been supported by TÜBİTAK [grant number 113E619].

Notes on contributors

Javad Jangi Golezani

Javad Jangi Golezani received his MSc and PhD from Informatics Institute of Istanbul Technical University, Istanbul, Turkey, in 2012 and 2017, respectively. Currently, he is an assistant professor at Baskent University, Department of Electrical and Electronics Engineering. His research interests include antennas and propagation, RF and microwave systems, and frequency selective surfaces. Corresponding author. Email: [email protected]

Mesut Kartal

Mesut Kartal (M’91) received his MSc in 1993 and PhD in 2000. Currently, he is a professor at 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 the high-frequency region. Email: [email protected]

Bora Döken

Bora Döken received his MSc and PhD 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 FSSs, periodic structures, antennas and metamaterials. Email: [email protected]

Selçuk Paker

Selçuk Paker received his MS in 1992 and PhD in 1998. Currently, he is a professor at the Istanbul Technical University, Department of Electronics and Communication Engineering. His research interests include antennas and propagation, radar and SAR systems, electromagnetics, RF and microwave systems, wireless communications. Email: [email protected]