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Computer Science, Information Systems
Chi Zhang, Yong-Chang Jiao
Summary: This paper presents a compact transmission line decoupling and matching network for three-element circular arrays. Due to the miniaturization of wireless terminals, the antenna spacing becomes too close, resulting in large couplings and degraded system performance. The proposed network consists of an impedance transformation section and a star-shaped neutralization section, effectively eliminating couplings between antennas while occupying a smaller area. Experimental results demonstrate an increase in port isolation from 7.6 dB to 33.5 dB and a reduction in equivalent coupling coefficient from 0.11 to 0.011, validating the effectiveness of the proposed method.
Article
Engineering, Electrical & Electronic
Xiaoming Chen, Mengran Zhao, Huilin Huang, Yipeng Wang, Shitao Zhu, Chao Zhang, Jianjia Yi, Ahmed A. Kishk
Summary: Correlations and mutual couplings in antenna arrays can degrade the performance of MIMO systems. Reducing mutual coupling and correlation simultaneously is not an easy task in various multipath environments. In this study, a combination of PMS and ADS is proposed to mitigate correlations and mutual couplings in antenna arrays. Simulation and measurement results demonstrate the effectiveness of this approach.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Feng Liu, Jiayin Guo, Luyu Zhao, Guan-Long Huang, Yingsong Li, Yingzeng Yin
Summary: The study introduces a ceramic superstrate-based decoupling method that effectively reduces mutual coupling between closely packed dipole antennas while maintaining good performance. By introducing the ceramic superstrate, the isolation between antennas is significantly improved, with stable antenna performance and increased gain.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Yi-Feng Cheng, Dan Li, Shichang Chen, Gaofeng Wang
Summary: This study introduces a new approach for designing a wideband decoupling and matching network for two-element antenna arrays. Through the use of Even-Odd-Mode theory, the decoupling and matching problems are transformed into classical impedance matching problems, simplifying the network design process. By using a genetic algorithm to search for optimal circuit parameters, the proposed design demonstrates ultra-wide operating bandwidth, improved isolation, and high efficiency.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
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
Yong Mei Pan, Yang Hu, Shao Yong Zheng
Summary: A simple method using specific higher-order modes has been investigated to improve the isolation of dielectric resonator antenna elements, resulting in low mutual coupling levels and avoidance of radiation pattern distortion. This decoupling technique is effective for reducing both E-plane and H-plane coupling without the need for extra decoupling elements in the antenna system. Fabrication and measurements of a MIMO DRA array showed that using the proper mode can enhance isolation from about 15 to 45 dB at 5.25 GHz.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Zhou Jianxiong, Zhu Rongqiang, Li Haorun
Summary: A calibration method using turn table measurements is proposed to compensate for mutual coupling and channel imbalance in a compact MIMO radar array. Two mutual coupling matrices are used to model the relationship between the ideal manifold and the measured manifold, taking practical factors into account. Experimental results demonstrate the effectiveness of the method in angle estimation, beamforming, and superresolution.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Qi Xuan Lai, Yong Mei Pan, Shao Yong Zheng
Summary: A mode-counteraction-based self-decoupling method is proposed for circularly polarized multi-input multi-output microstrip patch antenna arrays. By adjusting the patch dimensions and feeding positions, the method can simultaneously excite two orthogonal modes in the active antenna and achieve a null-field region in the adjacent passive antenna to achieve a low mutual coupling of -59.4 dB.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Lina Ma, Zijian Shao, Jun Lai, Changzhan Gu, Junfa Mao
Summary: A compact wideband dual-decoupling technique is proposed for wideband microstrip patch antennas at the X-band. The proposed method integrates defected ground structure and coplanar inductance to achieve wideband decoupling. Experimental results demonstrate that the proposed method significantly improves the isolation performance of the antennas and achieves good decoupled bandwidth.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Jin Jiang, Qing-Xin Chu
Summary: This article proposes a new concept of broadband decoupling using multiple decoupling nulls to mitigate the mutual coupling problem in antenna arrays. The introduction of multiple resonators allows for broadband decoupling within the operating frequency band of the antenna. The article also elucidates the design method of the decoupling structure in the antenna array, providing significant computational resource savings. Simulation and test results demonstrate the effectiveness and high potential of this method for application to 5G MIMO antenna arrays deployed in base stations and wireless routers.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Chemistry, Multidisciplinary
Zhao Liu, Yongshun Wang, Yao Hu, Lijun Zhang
Summary: We propose a broadband decoupled antenna pair for 5G mobile terminals, which is based on the characteristic mode theory and defective ground structure. By applying the characteristic mode theory, the characteristic current distribution of the antenna is obtained and optimized to introduce new modes and achieve a wide bandwidth. The addition of a defective ground structure to the antenna pair results in a wideband decoupled antenna pair with small size and high isolation.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Jiayin Guo, Feng Liu, Luyu Zhao, Guan-Long Huang, Wei Lin, Yingzeng Yin
Summary: A decoupling design based on metasurface partial reflective decoupling superstrate (M-PRDS) is proposed for closely arranged dual-polarized antennas with power combiners. The M-PRDS technology not only achieves decoupling effect, but also has the advantages of low cost, lightweight, and easy fabrication.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Yi-Ming Zhang, Tian-Yan Lan, Shuai Zhang, Shao-Qiu Xiao
Summary: In order to suppress coupling among patch antenna arrays and reduce out-of-band spurious, this paper proposes a feeding-decoupling network with harmonic suppression. The decoupling method is achieved by generating two decoupling paths between the feeding of an antenna and the radiating patch of an adjacent antenna. The results show that the proposed decoupling structure effectively suppresses coupling and out-of-band spurious.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Qi Xuan Lai, Yong Mei Pan, Shao Yong Zheng, Wan Jun Yang
Summary: A novel decoupling method for MIMO microstrip patch antenna array is proposed, which utilizes the interaction of two modes to generate a null-field region for reducing mutual coupling. Experimental results show significant improvement in isolation for both E-plane-coupled and H-plane-coupled MPA arrays.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
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.