Article
Engineering, Electrical & Electronic
Yu Yao, Yu Shao, Jiliang Zhang, Jie Zhang
Summary: This article presents a transparent ultrawideband (UWB) multiple-input-multiple-output (MIMO) antenna based on a wired metal mesh (MM) structure. The proposed antenna achieves 77% transparency by hollowing out both metal and substrates into a mesh shape, while maintaining more than 83% radiation efficiency. It can be easily fabricated by conventional printed circuit board (PCB) and laser cutting techniques at a low cost.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Shailesh Jayant, Garima Srivastava, Sachin Kumar
Summary: This paper presents a four-port single radiator ultrawideband (UWB) multiple input-multiple output (MIMO) footwear antenna for wearable applications. The antenna can be easily integrated into the footwear and offers better impedance matching and isolation performance.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Rakhesh Singh Kshetrimayum, Mohit Mishra, Sonia Aissa, Shiban K. Koul, Mohammad S. Sharawi
Summary: This letter calculates the diversity order (DO) and diversity measure (DM) of multiple-input multiple-output (MIMO) antennas in various practical scenarios of single-user, multiuser, and massive MIMO wireless communications. These metrics are computed using the antenna correlation coefficient (ACC) matrix. The DO is obtained from the rank of the ACC matrix, while the DM is derived from the trace and Frobenius norm of the ACC matrix. Numerical results are presented, highlighting that the DM captures the impact of antenna correlation on diversity gain more effectively than the DO.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Ziheng Zhou, Yuehe Ge, Jiade Yuan, Zhimeng Xu, Zhizhang David Chen
Summary: This article presents a wideband printed-monopole antenna pair with enhanced isolation. A clear two-step method based on even-mode (EM) and odd-mode (OM) analyses is developed for antenna decoupling and matching. The proposed antenna pair offers isolation higher than 20 dB and total efficiency higher than 87% from 3.7 to 7.3 GHz. Furthermore, a four-element multiple-input-multiple-output (MIMO) array constructed by intersecting two of the proposed antenna pairs at their central line offers better than 20 dB isolation level from 3.8 to 7.4 GHz for every two ports.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Xide Mei, Ke-Li Wu
Summary: In this article, a capacity-oriented envelope correlation coefficient (ECC) is proposed for assessing a multiple antenna system of a MIMO mobile device. The ECC-M is proven to reflect the impact of radiation patterns and total efficiencies of multiple antennas on channel capacity. By studying two channel models, an easy-to-use ECC-M expression is derived and shown to be important in assessing the performance of multiple antennas.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Praveen Kumar, Sameena Pathan, Shweta Vincent, Om Prakash Kumar, N. Yashwanth, Pradeep Kumar, Pranav R. R. Shetty, Tanweer Ali
Summary: This paper presents a design of an ultrawideband (UWB) and four-port MIMO antenna. The antenna structure is modified to achieve a broader bandwidth by including guitar shape slots on the radiator and a half-circle slot in the lowered ground plane. The mutual coupling in the MIMO elements is minimized by parasitic elements and a mesh-like structure, improving isolation.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Engineering, Electrical & Electronic
Ubaid Ullah, Muath Al-Hasan, Slawomir Koziel, Ismail Ben Mabrouk
Summary: This article presents a four-element circularly polarized MIMO antenna array design utilizing 45 degrees inclined slots and a straight microstrip line feeding technique, achieving circular polarization diversity and polarization direction diversity, with wide impedance bandwidth, high gain, and compact size.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Bo Cheng, Zhengwei Du
Summary: This paper presents a dual-polarization microstrip MIMO antenna for 5G mobile phones, enabling multiple input and multiple output communication. By arranging eight differentially fed microstrip antenna elements on the back cover of a mobile phone, an eight-element MIMO antenna is constructed. This antenna features a wide operating band, low mutual couplings, low ECCs, and low MEG ratios.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Tianqi Pei, Lei Zhu, Jianpeng Wang, Wen Wu
Summary: This article introduces a new low-profile decoupling structure for patch antenna arrays based on the phase shift concept. Through analysis and demonstration, it is proven to effectively enhance isolation between antenna elements and suppress mutual coupling.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Wei Hu, Qiaosong Li, Hao Wu, Zhan Chen, Lehu Wen, Wen Jiang, Steven Gao
Summary: This paper presents a novel decoupling method for designing a dual-band closely arranged MIMO antenna pair with high isolation for 5G smartphones. By combining a bent loop and a T-shaped monopole into a compact space, multiple in-phase and out-of-phase modes are excited at two different bands to reduce mutual coupling. The proposed antenna pair achieves high isolation of over 24 dB without additional decoupling structures. An 8 x 8 MIMO system is developed using four such antenna pairs, operating at 3.3-3.6 GHz and 4.4-5.0 GHz, with isolation exceeding 12.8 dB, low envelope correlation coefficients (ECCs) below 0.18, and efficiencies above 71% and 68% in the respective bands. This MIMO system features dual-band operation, compact structure, and excellent isolation, providing a promising solution for 5G smartphone antenna design.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Bing Zhang, Jian Ren, Yu-Xiang Sun, Ying Liu, Yingzeng Yin
Summary: This paper presents a four-port cylindrical pattern diversity and polarization-diversity dielectric resonator antenna (DRA) for MIMO applications. The design utilizes degenerate modes of the cylindrical DRA to achieve efficient mode excitation and utilization of diversity. The performance of the design is verified through simulation, fabrication, and measurement, and the indoor communication performance is evaluated.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Satheeshkumar Thirugnanasambandam, Idayachandran Govindanarayanan
Summary: This article proposes a wideband tripolarized antenna for fifth-generation access point applications. The antenna is composed of a circular patch and a square reflector, and is excited by three ports separated by 120. The bandwidth and isolation of the antenna are enhanced by circular hook shaped slots and a defective ground reflector. The measured impedance bandwidth of the antenna is 46.9% (3.1 GHz-5 GHz) and the peak isolation is -26 dB.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Poonam Kumari, Ravi Kumar Gangwar, Raghvendra Kumar Chaudhary
Summary: In this letter, a novel aperture-coupled stepped dielectric resonator (DR) ultrawideband (UWB) multiple-input-multiple-output (MIMO) antenna (UMA) is proposed. The UMA achieves UWB by resonating at specific frequencies and merges with the aperture resonating bands. By incorporating a modified neutralization line and a dual artificial magnetic conductor (AMC) structure, the proposed antenna improves isolation, gain, and radiation characteristics. The UMA also shows better gain stability and phase linearity compared to a traditional UWB antenna.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2022)
Article
Chemistry, Analytical
Rong Yang, Shuqi Xi, Qibo Cai, Zhizhou Chen, Xiaohang Wang, Gui Liu
Summary: The proposed compact dual-band MIMO antenna, with high isolation and small size, is suitable for 5G and 4G applications.
Article
Engineering, Electrical & Electronic
Bixia Yang, Yunxue Xu, Jiahao Tong, Yuhao Zhang, Yuwen Feng, Yafei Hu
Summary: A novel self-decoupling tri-port antenna is proposed, which achieves good isolation and low correlation coefficient through mode cancellation method and active reflection coefficient theory.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
