Broadband Circuit Analog Absorber Using Low-Cost Frequency Selective Surface

2021 ◽  
Author(s):  
Koichi Furuya ◽  
Tsuyoshi Kobayashi ◽  
Noriyuki Fukui ◽  
Naofumi Yoneda
Keyword(s):  
Low Cost ◽  
Frequency Selective Surface ◽  
Frequency Selective

scholarly journals Analysis of substrateintegrated frequency selective surface antenna for IoT applications

2020 ◽  
Vol 18 (2) ◽  
pp. 875
Author(s):  
Govardhani Immadi ◽  
M. Venkata Narayana ◽  
A. Navya ◽  
C. Anudeep Varma ◽  
A. Abhishek Reddy ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Low Cost ◽  
Frequency Selective Surface ◽  
Microstrip Patch Antenna ◽  
Iot Applications ◽  
The Past ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna ◽  
Frequency Selective ◽  
Tan Δ

<p>Antennas are long used for communication of data since a century and their usage has been diversified over the past two decades and the antennas also entered the domain of medical fields. A rectangular microstrip patch antenna has been designed on a substrate integrated waveguide with frequency selective surface which is in the shape of a square. The design of this antenna with SIW are done by using CST on a low cost FR4 substrate where є<sub>r</sub> =4.4, h=1.58 mm and tan δ=0.0035. The SIW structure merit is utilized on the traditional FSS is simulated and verified by using CST.</p>

Low-Cost All-Metal Bandpass Frequency Selective Surface

2021 ◽  
Author(s):  
Foez Ahmed ◽  
Muhammad U. Afzal ◽  
Touseef Hayat ◽  
Karu P. Esselle
Keyword(s):  
Low Cost ◽  
Frequency Selective Surface ◽  
Frequency Selective

scholarly journals 3D conformal bandpass millimeter-wave frequency selective surface with improved fields of view

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
H. Fernández Álvarez ◽  
Darren A. Cadman ◽  
Athanasios Goulas ◽  
M. E. de Cos Gómez ◽  
Daniel S. Engstrøm ◽  
...  
Keyword(s):  
High Performance ◽  
Incidence Angle ◽  
Low Cost ◽  
Near Field ◽  
Frequency Selective Surface ◽  
Field Region ◽  
Filter Array ◽  
3D Printed ◽  
Frequency Selective ◽  
Good Agreement

AbstractConventional planar frequency selective surfaces (FSSs) are characterized in the far-field region and they are sensitive to the incidence angle of impinging waves. In this paper, a spherical dome FSS is presented, aiming to provide improved angular stable bandpass filtering performance as compared to its planar counterpart when the FSS is placed in the near-field region of an antenna source. A comparison between the conformal FSS and a finite planar FSS is presented through simulations at the frequency range between 26 to 40 GHz in order to demonstrate the advantages of utilizing the conformal FSS in the near-field. The conformal FSS is 3D printed and copper electroplated, which leads to a low-cost and lightweight bandpass filter array. Placing it in the near-field region of a primary antenna can be used as radomes to realize compact high-performance mm-wave systems. The comparison between simulated and measured conformal FSS results is in good agreement. The challenges that arise when designing, manufacturing, and measuring this type of structure are reported and guidelines to overcome these are presented.

scholarly journals A novel 4-DOF wide-range tunable frequency selective surface using an origami “eggbox” structure

2021 ◽  
pp. 1-7
Author(s):  
Yepu Cui ◽  
Ryan Bahr ◽  
Samantha Van Rijs ◽  
Manos Tentzeris
Keyword(s):  
Degrees Of Freedom ◽  
Low Cost ◽  
Frequency Selective Surface ◽  
Ultra Wideband ◽  
Space Applications ◽  
Tunable Range ◽  
Mechanical Metamaterials ◽  
Wide Range ◽  
Frequency Selective ◽  
Tunable Frequency

Abstract Shape-changing mechanical metamaterials have drawn the attention of researchers toward the development of continuous-range tunable frequency selective surfaces (FSSs). In this paper, a novel tunable FSS utilizing an origami-inspired “eggbox” structure is presented featuring four-degrees of freedom that can change the frequency response of two orthogonal linear polarizations. The centrosymmetric “eggbox” structure can be folded or rotated along two axes that lead to unprecedented reconfigurability compared to traditional Miura-Ori-based structures which have fewer degrees of control. The utilized cross-shaped dipole FSS element shows enhanced bandwidth, support for orthogonal linear polarization, and ease of fabrication. The prototype is fabricated using a low-cost fully additive inkjet printing process with silver nanoparticle conductive ink. The outcome of this study shows a 25% frequency tunable range over two polarization directions. The design can be an ideal spatial filtering candidate for advanced ultra-wideband terrestrial and space applications.

Microfabrication of Low Cost Frequency Selective Surface for Terahertz Wave by Laser Ablation

2019 ◽  
Vol 48 (4) ◽  
pp. 2423-2429 ◽  
Author(s):  
Manikandan Esakkimuthu ◽  
Sreeja Balakrishnapillai Suseela ◽  
Radha Sankarrajan ◽  
Abhishek Gupta ◽  
Shriganesh Prabhu
Keyword(s):  
Laser Ablation ◽  
Low Cost ◽  
Frequency Selective Surface ◽  
Terahertz Wave ◽  
Frequency Selective

Screen Printed Frequency-Selective Surfaces on Rigid, Flexible and Elastic Substrates

2006 ◽  
Vol 964 ◽  
Author(s):  
Thomas Kistenmacher ◽  
Shaun Francomacaro ◽  
Ben Brawley ◽  
Ra'id Awadallah ◽  
Paul Vichot ◽  
...  
Keyword(s):  
Screen Printing ◽  
Low Cost ◽  
Frequency Selective Surface ◽  
Flexible Substrates ◽  
Frequency Selective Surfaces ◽  
Quality Factors ◽  
Split Ring ◽  
Elastic Substrates ◽  
Frequency Selective ◽  
Screen Printed

ABSTRACTA series of frequency-selective surface (FSS) arrays based on nested split-ring triangle resonators have been fabricated using screen printing. A silver-filled polymer thick film (PTF) paste was selected as the active medium for the FSS arrays as it has good compatibility with the various substrates employed and is in itself naturally flexible. Substrates included FR4 boards and polyimide (PI), polyethylene terephthalate (PET) and silicone sheeting. Compared to arrays fabricated from Cu-clad FR4 board, the screen-printed arrays are resonance shifted owing to the magnitude of the dielectric constant and thickness of the various substrates. In addition, the quality factors of the screen-printed arrays are reduced compared to those fabricated from the more conductive Cu resonators. Despite these limitations, screen-printed arrays have considerable potential as components for low-cost flexible and conformal microwave devices.

Characterization of frequency-selective surface spatial filters in a rectangular waveguide

2012 ◽  
Vol 4 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Fabien Debarros ◽  
Pierre Lemaître-Auger ◽  
Alysson Vasconcelos Gomes de Menezes ◽  
Romain Siragusa ◽  
Tan-Phu Vuong ◽  
...  
Keyword(s):  
Rectangular Waveguide ◽  
Assessment Tool ◽  
Low Cost ◽  
Plane Waves ◽  
Single Mode ◽  
Frequency Selective Surface ◽  
Spatial Filters ◽  
Full Wave ◽  
Frequency Selective ◽  
Axes Of Symmetry

The possibility to characterize infinite and periodic frequency-selective surfaces (FSS) filters that have two orthogonal axes of symmetry inside a waveguide is reported. Thus, preliminary measurements can rapidly be obtained at low cost with few elementary cells instead of using a large FSS panel in free space. This is possible because of the equivalence that exists between the electromagnetic fields of two symmetric and oblique plane waves incident on and reflected from an infinite periodic surface and the incident/reflected fields that exist inside a single-mode rectangular waveguide containing a finite number of elementary cells. Comparisons of the measurements with some full-wave simulations for FSS belonging to the first three groups as they were defined by Munk confirm the good agreement between them. This is an interesting and simple assessment tool concerning the fabrication quality of FSS. The extension of this technique to non-symmetric FSS patterns is also discussed and supported by experimental and simulation results. The limitations of the technique are finally discussed.

scholarly journals Highly sensitive frequency selective surface for structural health monitoring system

2019 ◽  
Vol 14 (2) ◽  
pp. 523
Author(s):  
S. A. Suhaimi ◽  
S. N. Azemi ◽  
P. J. Soh ◽  
C.B.M. Rashidi ◽  
A Abdullah Al-Hadi
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Low Cost ◽  
Three Dimensional ◽  
Frequency Selective Surface ◽  
Structural Health ◽  
Ac Power ◽  
Highly Sensitive ◽  
Passive Sensor ◽  
Frequency Selective

<span>This paper is introduced a passive sensor to detect the performance of the structure using three-dimensional (3D) Frequency Selective Surfaces (FSS). The proposed 3D Circular FSS results are proved behave as passive sensor with changing of sensitivity incident angles to be apply in Structural Health Monitoring (SHM) system. Moreover, this 3D Circular FSS capable to operate without stand to any (DC/AC) power and very low cost in term of installation and maintenance.</span>

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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