Single-Layer Wide-band 45 Degree Phase Shifter with Filter Function

2021 ◽  
Author(s):  
Duo Xu ◽  
Yiming Tang
Keyword(s):  
Phase Shifter ◽  
Single Layer ◽  
Wide Band ◽  
Filter Function

scholarly journals Independently Tunable Multipurpose Absorber with Single Layer of Metal-Graphene Metamaterials

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 284
Author(s):  
Chen Han ◽  
Renbin Zhong ◽  
Zekun Liang ◽  
Long Yang ◽  
Zheng Fang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Fermi Level ◽  
Potential Application ◽  
Single Layer ◽  
Wide Band ◽  
Metamaterial Absorber ◽  
Unit Cell ◽  
Perfect Absorption ◽  
Solar Energy Harvesting ◽  
Band Absorption

This paper reports an independently tunable graphene-based metamaterial absorber (GMA) designed by etching two cascaded resonators with dissimilar sizes in the unit cell. Two perfect absorption peaks were obtained at 6.94 and 10.68 μm with simple single-layer metal-graphene metamaterials; the peaks show absorption values higher than 99%. The mechanism of absorption was analyzed theoretically. The independent tunability of the metamaterial absorber (MA) was realized by varying the Fermi level of graphene under a set of resonators. Furthermore, multi-band and wide-band absorption were observed by the proposed structure upon increasing the number of resonators and resizing them in the unit cell. The obtained results demonstrate the multipurpose performance of this type of absorber and indicate its potential application in diverse applications, such as solar energy harvesting and thermal absorbing.

scholarly journals A Compact Single-Layer Balanced Phase Shifter With Wide Bandwidth and Uniform Reference Line

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 41530-41536
Author(s):  
Wei Zhang ◽  
Kai Xu ◽  
Jin Shi ◽  
Zhidan Shen
Keyword(s):  
Phase Shifter ◽  
Single Layer ◽  
Reference Line ◽  
Wide Bandwidth

A Multiple-Bands Metamaterial Absorber Based in X, Ku and K-Band

2021 ◽  
Author(s):  
Muhammad Fahim Zafar ◽  
Usman Masud
Keyword(s):  
Single Layer ◽  
Wide Band ◽  
Metamaterial Absorber ◽  
Basic Unit ◽  
Frequency Range ◽  
Structure Form ◽  
Perfect Absorption ◽  
Polarization Insensitive ◽  
Band Absorption ◽  
K Band

Abstract Developing a highly efficient and multiple-bands metamaterial absorber is a hot issue in recent era. In this paper, A multiple-bands metamaterial absorber has been presented which is based in X, Ku and K-band. Firstly, we have designed two single layer basic unit cell of X-shape and cross-shape, then they are arranged in the multi-layers structure form for the purpose of obtaining multiple- bands and wide band absorption. The proposed absorber is able to work in multiple bands because it has six peaks in the frequency range of 8–24 GHz with having near perfect absorption. Moreover, the sixth peak has a wideband absorption which is 2.93 GHz. Furthermore, the proposed absorber is also tested for polarization insensitivity and also for oblique incidence. Absorption was found polarization insensitive with almost perfect absorption.

A novel wide-band tunable RF phase shifter using a variable optical directional coupler

1999 ◽  
Vol 47 (5) ◽  
pp. 645-648 ◽  
Author(s):  
K. Ghorbani ◽  
A. Mitchell ◽  
R.B. Waterhouse ◽  
M.W. Austin
Keyword(s):  
Directional Coupler ◽  
Phase Shifter ◽  
Wide Band

Wide-Band Monolithic Phase Shifter

1984 ◽  
Vol 32 (12) ◽  
pp. 1710-1714 ◽  
Author(s):  
Y. Ayasli ◽  
S.W. Miller ◽  
R. Mozzi ◽  
L.K. Hanes
Keyword(s):  
Phase Shifter ◽  
Wide Band
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