Application of Symmetry in Innovative Microwave/Millimeter-Wave/THz Antenna, Circuit and Radar System

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

Deadline for manuscript submissions: 30 June 2024 | Viewed by 1920

Special Issue Editors


E-Mail Website
Guest Editor
Institute of Electromagnetics and Acoustics, Xiamen University, Xiamen 361005, China
Interests: 5G large-scale millimeter-wave MIMO antennas; millimeter-wave-filtering antennas/chip antennas; multi-band co-aperture base-station antenna arrays; satellite circularly polarized array antennas; RF multi-device collaborative integration design
School of Integrated Circuits, Guangdong University of Technology, Guangzhou 510006, China
Interests: RF integrated circuits; antenna-in-package; active integrated antennas; wireless power transfer; RF front-end circuits; time-modulated metamaterials

Special Issue Information

Dear Colleagues,

Next-generation communication technologies such as 5G, B5G and 6G are among the most important technologies for the future. Advanced antenna and RF front-end systems are key technologies that can meet the demanding requirements for next-generation communications. This Special Issue aims to highlight the application of symmetry in innovative microwave/millimeter-wave/THz antenna, circuit and radar systems. Authors are kindly invited to submit their contributions to this Special Issue on topics including, but not limited to, the following:

  1. Sub-6GHz/mmWave technology for 5G antennas;
  2. Sub-THz technology for 6G antennas;
  3. Active or passive circuits such as filters, power dividers, duplexers, amplifiers, etc.;
  4. Symmetrical metasurfaces or metamaterials applied in innovative antenna designs;
  5. Radar system simulation and waveform design;
  6. LEO satellite antenna arrays/phased arrays.

Dr. Yao Zhang
Dr. Zhixia Du
Guest Editors

Manuscript Submission Information

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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

  • antenna
  • circuit
  • radar system
  • symmetrical metamaterials
  • satellite phased array

Published Papers (2 papers)

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Research

12 pages, 3387 KiB  
Article
A Novel Radar Cross-Section Calculation Method Based on the Combination of the Spectral Element Method and the Integral Method
by Hongyu Zhao, Jingying Chen, Mingwei Zhuang, Xiaofan Yang and Jianliang Zhuo
Symmetry 2024, 16(5), 542; https://doi.org/10.3390/sym16050542 - 1 May 2024
Viewed by 587
Abstract
This article proposes a novel method for calculating radar cross-sections (RCSs) that combines the spectral element method and the integral method, allowing for RCS calculations at any position in a free space or a half-space. This approach replaces the field source with an [...] Read more.
This article proposes a novel method for calculating radar cross-sections (RCSs) that combines the spectral element method and the integral method, allowing for RCS calculations at any position in a free space or a half-space. This approach replaces the field source with an incident field using the scattered field equation of the spectral element method, enabling the arbitrary placement of the field source without being limited by the computational domain. By applying the superposition theorem and the volume equivalence principle, the scattered field of the objects at any position is obtained through integral equations, eliminating limitations on the computation points imposed by the computational domain. Based on Green’s function’s important role throughout the calculation process and its symmetry properties, the RCS calculation of symmetric models will be more advantageous. Finally, several examples, including symmetry models, are provided to validate both the feasibility and accuracy of this proposed method. Full article
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12 pages, 4098 KiB  
Article
Computational Design of an In-Line Coaxial-to-Circular Waveguide Adapter with More Than an Octave Bandwidth
by Erdenesukh Altanzaya, Jiwon Heo, Songyuan Xu, Chan-Soo Lee, Bierng-Chearl Ahn, Sung-Soo Kim and Seong-Gon Choi
Symmetry 2024, 16(3), 304; https://doi.org/10.3390/sym16030304 - 5 Mar 2024
Viewed by 847
Abstract
This paper presents a computer-simulation-based design of an in-line, coaxial-to-circular waveguide adapter for converting the coaxial transverse electromagnetic (TEM) mode to the circular waveguide TE11 mode over more than a one-octave bandwidth. The proposed adapter consists of a coaxial-to-rectangular waveguide transformer employing [...] Read more.
This paper presents a computer-simulation-based design of an in-line, coaxial-to-circular waveguide adapter for converting the coaxial transverse electromagnetic (TEM) mode to the circular waveguide TE11 mode over more than a one-octave bandwidth. The proposed adapter consists of a coaxial-to-rectangular waveguide transformer employing a stepped-ridge converter and a rectangular-to-circular waveguide transformer employing a curved transition. The proposed adapter has been optimized using a commercial simulation tool. The dimensions of the designed adapter are given so that it can be verified by anyone who is interested. The designed adapter operates from 8.00 GHz to 22.95 GHz (2.87:1 bandwidth) with a reflection coefficient of less than −20 dB and a higher-order mode level of less than −25.0 dB. Full article
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