Dual-band isotropic metamaterial absorber based on near-field interaction in the Ku band

2020 ◽  
Vol 20 (2) ◽  
pp. 331-336 ◽  
Author(s):  
The Linh Pham ◽  
Hong Tiep Dinh ◽  
Dinh Hai Le ◽  
Xuan Khuyen Bui ◽  
Son Tung Bui ◽  
...  
Keyword(s):  
Near Field ◽  
Metamaterial Absorber ◽  
Dual Band ◽  
Field Interaction ◽  
Ku Band

scholarly journals A Polarization Independent Quasi-TEM Metamaterial Absorber for X and Ku Band Sensing Applications

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4209 ◽  
Author(s):  
Ahasanul Hoque ◽  
Mohammad Tariqul Islam ◽  
Ali Almutairi ◽  
Touhidul Alam ◽  
Mandeep Jit Singh ◽  
...  
Keyword(s):  
Satellite Communication ◽  
Wave Spectrum ◽  
Metamaterial Absorber ◽  
Simulation Software ◽  
Ring Resonators ◽  
Dual Band ◽  
Absorption Bands ◽  
Sensing Applications ◽  
Resonance Frequencies ◽  
Ku Band

In this paper, a dual-band metamaterial absorber (MMA) ring with a mirror reflexed C-shape is introduced for X and Ku band sensing applications. The proposed metamaterial consists of two square ring resonators and a mirror reflexed C-shape, which reveals two distinctive absorption bands in the electromagnetic wave spectrum. The mechanism of the two-band absorber particularly demonstrates two resonance frequencies and absorption was analyzed using a quasi-TEM field distribution. The absorption can be tunable by changing the size of the metallic ring in the frequency spectrum. Design and analysis of the proposed meta-absorber was performed using the finite-integration technique (FIT)-based CST microwave studio simulation software. Two specific absorption peaks value of 99.6% and 99.14% are achieved at 13.78 GHz and 15.3 GHz, respectively. The absorption results have been measured and compared with computational results. The proposed dual-band absorber has potential applications in sensing techniques for satellite communication and radar systems.

Single-peak-regulation and wide-angle dual-band metamaterial absorber based on hollow-cross and solid-cross resonators

2020 ◽  
Vol 91 (3) ◽  
pp. 30901
Author(s):  
Yibo Tang ◽  
Longhui He ◽  
Jianming Xu ◽  
Hailang He ◽  
Yuhan Li ◽  
...  
Keyword(s):  
Transverse Electric ◽  
Surface Current ◽  
Dielectric Substrate ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Absorption Peak ◽  
Dual Band ◽  
Single Peak ◽  
Wide Angle ◽  
Surface Current Density

A dual-band microwave metamaterial absorber with single-peak regulation and wide-angle absorption has been proposed and illustrated. The designed metamaterial absorber is consisted of hollow-cross resonators, solid-cross resonators, dielectric substrate and metallic background plane. Strong absorption peak coefficients of 99.92% and 99.55% are achieved at 8.42 and 11.31 GHz, respectively, which is basically consistent with the experimental results. Surface current density and changing material properties are employed to illustrate the absorptive mechanism. More importantly, the proposed dual-band metamaterial absorber has the adjustable property of single absorption peak and could operate well at wide incidence angles for both transverse electric (TE) and transverse magnetic (TM) waves. Research results could provide and enrich instructive guidances for realizing a single-peak-regulation and wide-angle dual-band metamaterial absorber.

Polarization-insensitive dual-band terahertz metamaterial absorber based on asymmetric arrangement of two rectangular-shaped resonators

Optik ◽  
2021 ◽  
pp. 167669
Author(s):  
Dac Tuyen Le ◽  
Ba Tuan Tong ◽  
Thi Kim Thu Nguyen ◽  
Thanh Nghia Cao ◽  
Hong Quang Nguyen ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Polarization Insensitive

Design and Investigation of Polarization Independent Dual-Band Metamaterial Absorber

2020 ◽  
Author(s):  
Nur Izzati Zulkefli ◽  
Adel Ashyap ◽  
Ariffuddin Joret ◽  
Siti Hajar Aminah Ali ◽  
Samsul Haimi Dahlan ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Polarization Independent

A Numerically Efficient Method for Analysis of Very Large Articulated Floating Structures

1998 ◽  
Vol 42 (03) ◽  
pp. 174-186
Author(s):  
C. J. Garrison
Keyword(s):  
Hydrodynamic Interaction ◽  
Near Field ◽  
Three Dimensional ◽  
Computational Effort ◽  
Floating Structure ◽  
Complete Structure ◽  
Field Interaction ◽  
Floating Structures ◽  
Computing Effort ◽  
The Individual

A method is presented for evaluation of the motion of long structures composed of interconnected barges, or modules, of arbitrary shape. Such structures are being proposed in the construction of offshore airports or other large offshore floating structures. It is known that the evaluation of the motion of jointed or otherwise interconnected modules which make up a long floating structure may be evaluated by three dimensional radiation/diffraction analysis. However, the computing effort increases rapidly as the complexity of the geometric shape of the individual modules and the total number of modules increases. This paper describes an approximate method which drastically reduces the computational effort without major effects on accuracy. The method relies on accounting for hydrodynamic interaction effects between only adjacent modules within the structure rather than between all of the modules since the near-field interaction is by far the more important. This approximation reduces the computational effort to that of solving the two-module problem regardless of the total number of modules in the complete structure.

Design and Empirical Evaluation of a Novel Near-field Interaction Metaphor on Distant Object Manipulation in VR

2021 ◽  
Author(s):  
Chia-Yang Lee ◽  
Wei-An Hsieh ◽  
David Brickler ◽  
Sabarish V. Babu ◽  
Jung-Hong Chuang
Keyword(s):  
Near Field ◽  
Empirical Evaluation ◽  
Object Manipulation ◽  
Field Interaction ◽  
Distant Object
Sign in / Sign up

Export Citation Format

Share Document