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Symmetry
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Symmetry in Microwave and Terahertz Devices: Design, Function, Fabrication and...
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Symmetry in Microwave and Terahertz Devices: Design, Function, Fabrication and Application

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3662

Special Issue Editors

Dr. Guangsheng Deng

E-Mail Website
Guest Editor
Associate Professor, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology, Hefei 230009, China
Interests: microwave and terahertz sensors; metamaterials; electromagnetic wave absorbers
Dr. Jun Yang

E-Mail Website
Guest Editor
1. Associate Professor, Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Opto-Electric Technology, Hefei University of Technology, Hefei 230009, China
2. Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, China
Interests: terahertz antennas; terahertz metamaterials

Special Issue Information

Dear Colleagues,

Symmetry plays a crucial role in the study of microwave and terahertz wave devices, from their design to application. Symmetry is especially important when constructing reciprocal microwave/terahertz wave circuits or microwave/terahertz wave devices with polarization-independent characteristics. Various kinds of microwave and terahertz wave devices with different functions can be designed with the incorporation of symmetry, some of which might lead to breakthroughs in their corresponding research fields.

In this Special Issue of Symmetry, we will focus on novel approaches, advanced technologies, and further applications in this field, as well as the consequences of the prevalent use of symmetry in theoretical and experimental studies on the design, fabrication, and application of microwave and terahertz devices with various functions, such as generating microwave/terahertz waves, sensing or detecting using microwave/terahertz waves, imaging with microwave/terahertz waves, and developing novel microwave/terahertz wave systems for biomedical applications. We welcome research on novel microwave/terahertz wave devices targeting on all aspect of applications, where symmetry, or the deliberate lack of symmetry, is present are welcome.

Dr. Guangsheng Deng
Dr. Jun Yang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • symmetry
  • microwave circuits
  • terahertz wave imaging
  • terahertz wave sensing
  • microwave/terahertz wave absorbers
  • microwave/terahertz wave generators

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Published Papers (2 papers)

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Research

14 pages, 4976 KiB  
Article
THz Broadband Absorber Based on MoS2 with Split Rings and Archimedean Spiral Structures
by Fei Cai, Zhifei Kou and Ying Li
Symmetry 2022, 14(10), 2189; https://doi.org/10.3390/sym14102189 - 18 Oct 2022
Cited by 2 | Viewed by 1901
Abstract
The MoS2 surface plasmon resonance structure is proposed as a THz absorber in this work. The absorber adopts a double layer structure of Archimedean spirals stacked with split rings. In 1.2–3.0 THz, the absorption is greater than 92%, and the relative absorption [...] Read more.
The MoS2 surface plasmon resonance structure is proposed as a THz absorber in this work. The absorber adopts a double layer structure of Archimedean spirals stacked with split rings. In 1.2–3.0 THz, the absorption is greater than 92%, and the relative absorption bandwidth reached the value of 85.7%. Due to the circular-like symmetry of the unit, the polarization of the absorber is less sensitive to the incident angle within a certain range. When the incident angle is within 60°, the absorption in the bandwidth is still greater than 85%. The design efficiency is also significantly improved by the combined method of the equivalent circuit and finite difference time domain. Our work provides new directions for the design of terahertz devices, which is of great importance for various fields including terahertz imaging, detection and sensing, and especially in 6G communication systems. Full article
(This article belongs to the Special Issue Symmetry in Microwave and Terahertz Devices: Design, Function, Fabrication and Application)
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9 pages, 3507 KiB  
Article
A Wideband and Ultra-Thin Metamaterial Absorber Based on Resistive FSS
by Zhongliang Lv, Zelun Li, Yu Han, Yujiang Cao and Lin Yang
Symmetry 2022, 14(6), 1148; https://doi.org/10.3390/sym14061148 - 2 Jun 2022
Cited by 10 | Viewed by 2995
Abstract
A wideband, ultra-thin, wide-angle and polarization-insensitive metamaterial absorber with a single-layer resistive frequency selective surface (FSS) is proposed. The simulated results show that the absorption rate of the absorber is greater than 90% in a frequency range of 24.1–42.6 GHz, and the relative [...] Read more.
A wideband, ultra-thin, wide-angle and polarization-insensitive metamaterial absorber with a single-layer resistive frequency selective surface (FSS) is proposed. The simulated results show that the absorption rate of the absorber is greater than 90% in a frequency range of 24.1–42.6 GHz, and the relative absorption bandwidth is up to 55.47%. The thickness of the structure is 1.2 mm, which is 0.088 λ and 0.156 λ for the lowest and highest frequencies, respectively. The power loss density is analyzed to explore the mechanism of the absorption and the resistive film layer is important for the wideband absorption. Meanwhile, a strong absorption for oblique incidence with wide angle and the characteristics of polarization insensitivity are achieved for the proposed design. Full article
(This article belongs to the Special Issue Symmetry in Microwave and Terahertz Devices: Design, Function, Fabrication and Application)
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