Article
Engineering, Electrical & Electronic
Hung Luyen, Zongtang Zhang, John H. Booske, Nader Behdad
Summary: We propose a wideband reflectarray antenna with electronic beam-steering capability. The reflectarray uses an electronically reconfigurable polarization-rotating unit cell to achieve beam-steering. We construct a prototype with 256 elements to demonstrate the effectiveness of the design concept.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Review
Chemistry, Multidisciplinary
Mirhamed Mirmozafari, Zongtang Zhang, Meng Gao, Jiahao Zhao, Mohammad Mahdi Honari, John H. Booske, Nader Behdad
Summary: The study reviewed mechanically reconfigurable reflectarray (RA) and transmitarray (TA) antennas, categorizing them into three major groups and a hybrid category. Performance metrics such as aperture efficiency, gain, bandwidth, scanning range, and resolution were compared across different approaches. Opportunities for further advancements in antenna performance were also identified.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Electrical & Electronic
Siti Nailah Mastura Zainarry, Shengjian Jammy Chen, Christophe Fumeaux
Summary: This paper presents a frequency-reconfigurable zero-scanning singlefeed antenna that combines two planar back-to-back quarter-wave patch antennas. The antenna utilizes open-circuited stub-loaded varactors connected to the sides of the radiating apertures for reconfigurability. By tuning the bias voltages to the varactors, the resonance frequency and relative phase of the two patches can be adjusted, enabling continuous tuning of the operation frequency and scanning of a radiation null in one plane. Experimental validation of the antenna prototype confirms the potential of the design concept.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Yuhan Wu, Shixing Yu, Na Kou, Zhao Ding, Zhengping Zhang
Summary: In this study, a 1-bit reconfigurable reflectarray antenna (RRA) using liquid metal is proposed for beam steering with high gain and high aperture efficiency. The RRA consists of three layers: the top and bottom layers have a translucent resin casing with a thin dielectric layer in between. The proposed RRA can effectively generate scanning beams within +/- 40 degrees and has a maximum measured gain of 24.08dBi with an aperture efficiency of 20.36%. It has the potential to be applied in modern wireless communication systems.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2023)
Article
Computer Science, Information Systems
Hoang Dang Cuong, Minh-Thuy Le, Nguyen Quoc Dinh, Xuan Nam Tran, Naobumi Michishita
Summary: In this work, a simple but novel method for modelling PIN diode SMP-1340-040 is developed by using waveguides and modified simulation approaches. Based on the obtained model, a broadband 1-bit unit cell using only one substrate is also proposed. The experimental results show an excellent agreement with the simulation, confirming the accuracy of the proposed PIN diode model.
Article
Computer Science, Information Systems
Antonio Pino, Yolanda Rodriguez-Vaqueiro, Eduardo Martinez-de-Rioja, Daniel Martinez-de-Rioja, Borja Gonzalez-Valdes, Marcos Arias, Oscar Rubinos, Jose Antonio Encinar, Giovanni Toso
Summary: This paper proposes a new method for synthesizing curved reflectarrays using Geometrical Optics (GO). The concepts of virtual normal and path length shift are introduced to enable a vector-based formulation that can be solved using ray tracing techniques. The method is applied to design two versions of a Dual Bifocal Reflectarray, aiming to enhance the performance of multibeam antenna and improve the scanning characteristics of the antenna. Numerical results are presented to demonstrate the feasibility of this solution for multibeam or scanning satellite antennas operating in the Ka band.
Article
Engineering, Electrical & Electronic
Chuan-Wei Luo, Gang Zhao, Yong-Chang Jiao, Guan-Tao Chen, Yang-Dong Yan
Summary: This study proposes a broadband reconfigurable transmitarray antenna based on a polarization rotation element, which effectively broadens the operating bandwidth of the RTA by controlling the on and off states of p-i-n diodes to change the polarization orientation of the emitted wave. Experimental results show that a 16 x 16 elements RTA has good performance, including peak gain, aperture efficiency, and beam scanning range.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Yujie Zhang, Zixiang Han, Shiwen Tang, Shanpu Shen, Chi-Yuk Chiu, Ross Murch
Summary: This article introduces a novel single-fed horizontally polarized pattern-reconfigurable antenna that is highly capable of generating various radiation patterns. The antenna is able to achieve flexible beam steering and full 3-D space scanning without the use of phase shifters. Experimental and simulation results demonstrate the antenna's performance in different radiation modes, showcasing its high pattern reconfigurability and versatility for sub-6 GHz wireless applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Peter Callaghan, Pavlos Giannakou, Simon G. King, Maxim Shkunov, Paul R. Young
Summary: A simple, low-cost, linearly polarized reconfigurable reflectarray surface is introduced in this study, allowing for beam steering over a wide range of angles in one plane. The technology has great potential for widespread deployment in wireless systems and can aid system designers with simple equations for design and manufacturing using screen-printing techniques.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Bing Jie Xiang, Xin Dai, Kwai-Man Luk
Summary: This article presents a wideband 1-bit reflectarray antenna with 2-D electronically beam-scanning capability. By using a novel reconfigurable element, the antenna achieves wideband operation and variable resonance types. Results show that the antenna performs well across the operating bandwidth and is a promising candidate for intelligent reflective surface applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Shangyang Li, Yan Wang, Feng Xu
Summary: In this article, an 8 x 8 array with 2-D wide-angle scanning is proposed and studied. By integrating two p-i-n diodes on the feeding line, the radiated electric field of the element can present two different phase states of 0 and -180 degrees. The proposed array has the advantages of being lightweight, low-cost, and easy to integrate, enabling its applications in space-limited scenarios such as base stations and unmanned aerial vehicles.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Na Zhang, Ke Chen, Jianmin Zhao, Qi Hu, Kui Tang, Junming Zhao, Tian Jiang, Yijun Feng
Summary: This study proposes a dual-polarized reconfigurable reflectarray (RRA) with dual-polarized beam control using a dual-channel programmable metasurface. By changing the working states of p-i-n diodes in each metasurface element, well-defined beam scanning can be achieved. The proposed RRA has promising applications in wireless communication and tracking/detecting systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Computer Science, Information Systems
Qasim Ali, Yu Xiao, Shozab Shafiq, Wenhao Tan, Waseem Shahzad, Syed Muzahir Abbas, Houjun Sun
Summary: This paper presents a hexagonal meander-shaped wideband electronically reconfigurable transmitarray (HMRTA) for satellite communications and radar applications. The proposed transmitarray offers high gain, low profile, and wideband characteristics with beam-scanning and beam-forming features. It achieves good radiation patterns at all scanning angles, and the cross-polarization level remains low. The array can perform beam scanning in both elevation and azimuth planes.
Article
Engineering, Electrical & Electronic
Fan Wu, Rong Lu, Jingxue Wang, Zhi Hao Jiang, Wei Hong, Kwai-Man Luk
Summary: This article reports a circularly polarized reflectarray with 2-D electronically steerable beam and introduces a new design approach to simplify element configuration and reduce the number of required diodes. Experimental results confirm the design's beam focusing, dynamic beam steering capabilities, as well as polarization purity and aperture efficiency.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Weite Zhang, Hipolito Gomez-Sousa, Juan Heredia-Juesas, Jose A. Martinez-Lorenzo
Summary: The article introduces a method for real-time security screening using reflectarrays and proposes simulation and object material characterization methods based on physical optics and geometrical optics. Results from simulations and experiments demonstrate the potential of this method for detecting threat materials within the human body.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2021)
Article
Engineering, Electrical & Electronic
Liang Wu, A. J. Farrall, P. R. Young
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2015)
Article
Engineering, Electrical & Electronic
Ruo Feng Xu, A. J. Farrall, P. R. Young
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2014)
Article
Engineering, Electrical & Electronic
A Farrall, PR Young
ELECTRONICS LETTERS
(2004)
