Dual-layer Frequency Selective Surface for wide stop-band applications

2015 ◽  
Author(s):  
Irfan Sohail Syed ◽  
Mohd Zarar Mohd Jenu
Keyword(s):  
Stop Band ◽  
Frequency Selective Surface ◽  
Frequency Selective

A novel design of ultra-wide stop-band single-layer frequency selective surface using square-loop and cross

2020 ◽  
pp. 1-10
Author(s):  
Amit Birwal ◽  
Sanjeev Singh ◽  
Binod Kumar Kanaujia
Keyword(s):  
Stop Band ◽  
Single Layer ◽  
Frequency Selective Surface ◽  
Transverse Magnetic ◽  
Unit Cell ◽  
Gain Enhancement ◽  
Single Side ◽  
Frequency Selective ◽  
Novel Design ◽  
Excellent Stability

Abstract In this paper, a novel design of ultra-wide stop-band single-side single-layer frequency selective surface (FSS) is presented. The unit cell of the proposed FSS is designed using the combination of conventional square loop and cross (CSLC). To enhance the bandwidth of this structure, an additional cross is inserted in all the four quadrants of CSLC. The stop-band transmission bandwidth assuming −10 dB threshold is found to be 128.94% (2.16–10 GHz) which is 34.33% more as compared to the bandwidth of CSLC. The unit cell with a dimension of 16 × 16 mm2 is printed on one side of an FR4 substrate. The design is fabricated and the measured results are found to be in good agreement with the simulated results. The design provides excellent stability for both transverse magnetic and transverse electric polarizations. The design is very flexible, where any resonant frequency can be achieved by changing the length of unit cell. The design is useful in many applications such as antenna gain enhancement, electromagnetic wave shielding for Wi-Fi/5G systems, and other Internet of Things-based applications.

scholarly journals A novel frequency selective surface of hybrid-element type with sharply decreased stop-band

2014 ◽  
Vol 63 (7) ◽  
pp. 078402
Author(s):  
Wang Yan-Song ◽  
Gao Jin-Song ◽  
Xu Nian-Xi ◽  
Tang Yang ◽  
Chen Xin
Keyword(s):  
Stop Band ◽  
Frequency Selective Surface ◽  
Hybrid Element ◽  
Element Type ◽  
Frequency Selective

scholarly journals Origami-Inspired Frequency Selective Surface with Fixed Frequency Response under Folding

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4808 ◽  
Author(s):  
Deanna Sessions ◽  
Alexander Cook ◽  
Kazuko Fuchi ◽  
Andrew Gillman ◽  
Gregory Huff ◽  
...  
Keyword(s):  
Broad Class ◽  
Stop Band ◽  
Frequency Selective Surface ◽  
Direct Write ◽  
Surface Acting ◽  
Archimedean Spiral ◽  
Future Design ◽  
Filter Performance ◽  
Band Filter ◽  
Frequency Selective

Filtering of electromagnetic signals is key for improved signal to noise ratios for a broad class of devices. However, maintaining filter performance in systems undergoing large changes in shape can be challenging, due to the interdependency between element geometry, orientation and lattice spacing. To address this challenge, an origami-based, reconfigurable spatial X-band filter with consistent frequency filtering is presented. Direct-write additive manufacturing is used to print metallic Archimedean spiral elements in a lattice on the substrate. Elements in the lattice couple to one another and this results in a frequency selective surface acting as a stop-band filter at a target frequency. The lattice is designed to maintain the filtered frequency through multiple fold angles. The combined design, modeling, fabrication, and experimental characterization results of this study provide a set of guidelines for future design of physically reconfigurable filters exhibiting sustained performance.

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