Article
Chemistry, Analytical
Musa N. Hamza, Yadgar Abdulkarim, Salah Raza Saeed, Olcay Altintas, Rashad H. Mahmud, Bhargav Appasani, Cristian Ravariu
Summary: This research presents a new low-cost microstrip patch antenna suitable for wideband microwave imaging applications. The antenna performance is improved with the addition of an artificial magnetic conductor (AMC), which is validated through experimental results. This work is of significant importance for the design of electromagnetic biosensors.
Article
Engineering, Electrical & Electronic
Ren-Hui Jin, Zheng-Gang Yan, Ya-Wen Liu, Wen-Zhong Lu, Xiao-Chuan Wang
Summary: A wideband function reconfigurable metamaterial (FRM) is proposed for radar cross section (RCS) reduction, which can switch between absorption and cancellation modes by regulating the circuit unit. The experimental results demonstrate significant RCS reduction in both absorption and cancellation functions.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Ryuji Kuse, Takeshi Fukusako, Akira Matsushima
Summary: This study presents a technique to compensate for the difference in reflection phase characteristics between a finite-size metasurface (MS) and an infinite MS structure. A new MS design with notches and slots on the backing conductor is proposed to compensate for the reflection phase affected by complex diffraction at the edge. The fabrication and analysis of both the proposed and conventional MSs show that the proposed design effectively achieves the desired performance based on the unit cell analysis corresponding to the infinite structure.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Dingzhao Chen, Yanhui Liu, Shu-Lin Chen, Pei-Yuan Qin, Y. Jay Guo
Summary: A wideband low-profile antenna with switchable multilinear polarizations is proposed in this study, utilizing odd number dipoles with trapezoidal-shaped arms and p-i-n diodes for polarization reconfiguration. A circular-contoured artificial magnetic conductor (AMC) reflector is used to reduce antenna profile, while maintaining almost rotationally invariant performance. Multiple dipole structures with different LP configurations are studied, achieving measured overlapped bandwidths and peak gains within a specified frequency range.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Multidisciplinary
Wen-Jing Wu, Gaofeng Wang
Summary: The paper proposes a modified artificial magnetic conductor (M-AMC)-based antenna sensor for retrieving the complex permittivity of the material under test (MUT). The sensor system consists of a coplanar waveguide (CPW) antenna and a M-AMC structure. The M-AMC structure is composed of a 3 x 3 array and each unit cell is fabricated by two-layer dielectric substrates. The proposed antenna sensor achieves an average sensitivity of 1.89% and a maximum error of less than 3.516% in extracting the real permittivity.
Article
Engineering, Electrical & Electronic
Zhiyuan Liu, Yikai Chen, Shiwen Yang
Summary: The Vivaldi antenna array is well-suited for phased array developments in airborne installations due to its wide bandwidth and scanning angle. However, its usage is limited by the 3-D structure, which can result in significant electromagnetic scattering and compromise the stealth property of the airborne platform. This work proposes two techniques to reduce in-band scattering of the Vivaldi antenna arrays, achieving a balance between scattering reduction and radiation performance.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Hang Yuan, Fu-Chang Chen
Summary: This paper investigates a mixed decoupling scheme for a dual-polarized antenna array. The array considered here is a 2-1-2 staggered scheme for the base station, with both non-negligible E- and H-plane coupling between antenna elements. To suppress mutual coupling, a novel decoupling scheme is proposed, combining an artificial magnetic conductor (AMC) and an array-antenna decoupling surface (ADS). The proposed scheme effectively reduces the antenna profile, suppresses E-plane coupling, and achieves improved isolation and performance.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Computer Science, Information Systems
Lina Qiu, Gaobiao Xiao
Summary: A broadband circularly polarized antenna with enhanced gain and low profile is proposed, featuring crossed-dipoles with full wavelength as the main radiators and an artificial magnetic conductor (AMC) structure as the reflector. The antenna design successfully reduces the profile while achieving a wide impedance bandwidth and axial ratio bandwidth, as well as high peak and average gain.
Article
Engineering, Electrical & Electronic
Yubiao Du, Min Hu, Weidong Guo, Juan Xu
Summary: A new design for reducing radar cross section (RCS) is proposed, utilizing a metasurface consisting of three types of artificial magnetic conductor (AMC) units. The reactance expression of an ideal AMC unit with a destructive phase difference is derived using resonance circuit and transmission line theory. Based on this expression, a parallel LC resonant circuit is designed and used as the equivalent circuit for the AMC unit. By adding an AMC3 unit, the frequency band with destructive phase difference is expanded from 11.5-17.25 GHz to 7.25-17.25 GHz. Finally, three AMC3 cells are arranged in a triangular configuration to form the metasurface, achieving RCS reduction from 6.5-16.7 GHz.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Changfei Zhou, Jiaxing Sun, Wen-Wen Yang, Min Li, Hang Wong
Summary: The fusion of dipole and patch antennas is proposed to achieve a wide band and a low profile by loading parasitic elements. A double-layer-metal artificial magnetic conductor (AMC) is employed to reduce the height, and two shorting pins are loaded to improve the isolation. The measured results show that the proposed antenna has a wide impedance bandwidth, high isolation, and stable performance.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Rawaa Maher, Ahmed Allam, Haruichi Kanaya, Adel B. Abdelrahman
Summary: This paper presents two high-gain, dualband antennas designed to harvest energy from GSM-1800 and the 2.45 GHz ISM frequency bands. The antennas demonstrate good gain and circular polarization characteristics. Additionally, a dualband rectifier is designed to achieve high peak conversion efficiency.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2024)
Article
Computer Science, Information Systems
Muhammad Aamer Shahzad, Kashif Nisar Paracha, Salman Naseer, Sarosh Ahmad, Muhammad Malik, Muhammad Farhan, Adnan Ghaffar, Mousa Hussien, Abu Bakar Sharif
Summary: The study introduced an antenna integrated on a smart watch strap, which achieved high gain and efficiency through the use of flexible antenna design and optimized antenna unit, with low specific absorption rate near the human body, suitable for wireless IoT applications.
Article
Computer Science, Information Systems
Hossein Malekpoor, Ali Abolmasoumi
Summary: This article introduces a low-profile 16-element printed dipole antenna (PDA) array supported by a broadband Giuseppe Peano artificial magnetic conductor (AMC) for wireless communication systems. By inserting the AMC reflector into the PDA, improved radiation efficiency and a wider bandwidth are achieved, with a measured bandwidth of 4.50-7.20 GHz for WLAN/WiMAX and 5G applications.
Article
Engineering, Electrical & Electronic
Mostafa O. Shady, Ahmed A. Kishk
Summary: This study proposes a novel multilayer Butler matrix layout that can significantly reduce the size of conventional Butler matrices applicable to any N x N. By eliminating crossover couplers, the layout achieves higher compactness and isolation. The designed 4 x 4 multilayer Butler matrix utilizes air microstrip lines (MSLs) packaged by an artificial magnetic conductor (AMC) to suppress wave leakage and radiation loss. It operates in the frequency range of 27 to 31 GHz with low insertion loss and phase imbalance, achieving good isolation and matching.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2023)
Article
Chemistry, Multidisciplinary
Oh Heon Kwon, Won Bin Park, Juho Yun, Hong Jun Lim, Keum Cheol Hwang
Summary: A low-profile HF meandered dipole antenna with a ferrite-loaded AMC is proposed in the paper, achieving performance optimization in the HF band through meandered design and genetic algorithm optimization.
APPLIED SCIENCES-BASEL
(2021)
