Fluidic tuning of a frequency selective surface based on a four-arm Archimedean spiral

2013 ◽  
Author(s):  
Michael S. Kelley ◽  
Gregory H. Huff
Keyword(s):  
Frequency Selective Surface ◽  
Archimedean Spiral ◽  
Frequency Selective

scholarly journals ARCHIMEDEAN SPIRAL ANTENNA LOADED BY FREQUENCY SELECTIVE SURFACE

2020 ◽  
Vol 95 ◽  
pp. 199-209
Author(s):  
Jian-Yi Chu ◽  
Lin Peng ◽  
Xiao-Feng Li ◽  
Xing Jiang
Keyword(s):  
Frequency Selective Surface ◽  
Spiral Antenna ◽  
Archimedean Spiral ◽  
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.

scholarly journals Design of a Compact Passband Frequency Selective Surface with Stable Resonance

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Samineni Peddakrishna ◽  
Taimoor Khan ◽  
Binod Kumar Kanaujia ◽  
N. Nasimuddin
Keyword(s):  
Reflection Coefficient ◽  
Free Space ◽  
Single Layer ◽  
Frequency Selective Surface ◽  
Archimedean Spiral ◽  
Operating Wavelength ◽  
Frequency Selective ◽  
Spiral Type ◽  
Transmission And Reflection ◽  
Compact Planar

We propose a compact planar passband frequency selective surface (FSS) operating at the resonance frequency of 3.81 GHz. The proposed FSS is composed of single layer of the Archimedean spiral type with the interdigital capacitance between the corners of metallic patches printed on one side of the substrate. Compared to the operating wavelength, the size of the proposed single layer FSS is 0.066λ0 (λ0 is the free space wavelength at 3.81 GHz). The performance such as transmission and reflection coefficient of the proposed FSS demonstrates excellent resonance stability for different polarization and different incident angles. Finally, the optimized simulated results are validated with measured results by a fabricated prototype of 31×31 array elements on 170×170 mm2 substrate area.

Dual-Band Band-Pass Frequency Selective Surface Based on the Matryoshka Geometry with Angular Stability and Polarization Independence

2020 ◽  
Author(s):  
Alfredo Gomes Neto ◽  
Jefferson Costa e Silva ◽  
Alexandre Jean Rene Serres ◽  
Marina de Oliveira Alencar ◽  
Ianes Barbosa Grecia Coutinho ◽  
...  
Keyword(s):  
Frequency Selective Surface ◽  
Angular Stability ◽  
Dual Band ◽  
Band Pass ◽  
Frequency Selective
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