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MIMO handset antenna for 5G/WLAN applications Correspondences

Yong CHENG, Jing LU, Bing-qing SHENG

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 182-187 doi: 10.1631/FITEE.1900478

Abstract: We propose a dual-module multiple-input multiple-output (MIMO) antenna for portable terminals. The operating bands of the handheld terminal antenna are 5G (3.4–3.8 GHz) and WLAN (5.150–5.925 GHz). Antenna elements of 5G and WLAN are spaced to reduce coupling between antenna elements in the same module. The return loss of all antenna elements is larger than 6 dB. The isolation between all elements is larger than 14 dB. The radiation efficiency of the high-frequency antenna is greater than 50%, and the radiation efficiency of the low-frequency antenna is greater than 40%. The far-field gain of all elements is greater than 2.2 dBi.

Keywords： Fifth-generation (5G)     Handset antenna     Multiple-input multiple-output (MIMO) antenna     Decouple    

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A novel grey wolf optimizer and its applications in 5G frequency selection surface design Research Article

Zhihao HE, Gang JIN, Yingjun WANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 9,   Pages 1338-1353 doi: 10.1631/FITEE.2100580

Abstract: In , more connections are built between metaheuristics and electromagnetic equipment design. In this paper, we propose a self-adaptive (SAGWO) combined with a novel optimization model of a 5G (FSS) based on FSS unit nodes. SAGWO includes three improvement strategies, improving the initial distribution, increasing the randomness, and enhancing the local search, to accelerate the convergence and effectively avoid local optima. In benchmark tests, the proposed optimizer performs better than the five other optimization algorithms: original (GWO), genetic algorithm (GA), particle swarm optimizer (PSO), improved (IGWO), and selective opposition based grey wolf optimization (SOGWO). Due to its global searchability, SAGWO is suitable for solving the optimization problem of a 5G FSS that has a large design space. The combination of SAGWO and the new FSS optimization model can automatically obtain the shape of the FSS unit with electromagnetic interference shielding capability at the center operating frequency. To verify the performance of the proposed method, a double-layer ring FSS is designed with the purpose of providing electromagnetic interference shielding features at 28 GHz. The results show that the optimized FSS has better electromagnetic interference shielding at the center frequency and has higher angular stability. Finally, a sample of the optimized FSS is fabricated and tested.

Keywords： Grey wolf optimizer     Fifth-generation wireless communication system (5G)     Frequency selection surface    

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Development of Deterministic Networking Techniques for Industrial Manufacturing

Wang Shuo, Wang Jiasen, Cai Lei, Huang Tao, Lu Hua, Liu Yunjie

Strategic Study of CAE 2021, Volume 23, Issue 2,   Pages 22-29 doi: 10.15302/J-SSCAE-2021.02.004

Abstract: and technical practicability; it is significant for promoting technological innovations of the new-generation

Keywords： industrial manufacturing     industrial Internet     deterministic network     time-sensitive network     the fifth-generation    

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Zero ground clearance dual antenna pair for metal-cased fifth-generation multiple input multiple output Correspondence

Le CHANG, Wenbao HE, Xiaomin CHEN, Xiaoxue TAN, Juan CHEN, Kai KANG, Yang YANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 10,   Pages 1562-1567 doi: 10.1631/FITEE.2200119

Abstract:

The fifth-generation (5G) era has already arrived and many applications are prospering.

Keywords： 天线对；第五代移动通信技术（5G）；Sub-6 GHz；极化正交；智能终端；智能手机；零净空；全金属外壳；多输入多输出（MIMO）    

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The Fifth Academic Conference of China Cancer Research Foundation

Strategic Study of CAE 2000, Volume 2, Issue 5,   Pages 94-94

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Non-ideal space division multiple access and its application None

Ji-ying XIANG

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 357-366 doi: 10.1631/FITEE.1700827

Abstract: We study the performance of space division multiple access (SDMA) under a non-ideal engineering situation. When the SDMA channel is of high inter-layer correlation and the condition number is large, the multiple user multiple input and multiple output user equipment (MUMIMOUE) grouping should be optimized, and in some cases further dimension-reduction should be applied. As the channel measuring is always non-ideal, we use two methods, feedback mode and non-feedback mode, in terms of performance and overhead. It is proposed that the non-feedback mode is preferable even for some non-reciprocal channels. Principle analysis and test results are given.

Keywords： Fifth generation (5G)     Condition number     Channel reciprocity     Feedback mode     Non-feedback mode    

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5G evolution promoting innovation of antenna systems Correspondences

Feng GAO, Peng GAO, Wen-tao ZHU, Chen-xi ZHANG, Xian-kun MENG, Run-hong SHAN

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 188-194 doi: 10.1631/FITEE.1900561

Abstract: introduce the basic concept, background, and development of mobile communication systems from the first generation(1G) to the fifth generation (5G) including their antenna systems.

Keywords： Fifth generation (5G)     Massive multiple-input multiple-output (MIMO) antenna array     Power consumption     Weight    

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Fifth Paradigm in Science: A Case Study of an Intelligence-Driven Material Design Article

Can Leng, Zhuo Tang, Yige Zhou, Zean Tian, Weiqing Huang, Jie Liu, Keqin Li, Kenli Li

Engineering 2023, Volume 24, Issue 5,   Pages 126-137 doi: 10.1016/j.eng.2022.06.027

Abstract:

Science is entering a new era—the fifth paradigm—that is being heralded as the main characterHere, we vividly illuminate the nature of the fifth paradigm by a typical platform case specificallymaterials constructed on the Tianhe-1 supercomputer system, aiming to promote the cultivation of the fifthThrough the discussion, the intelligence-driven platform of the fifth paradigm can greatly simplify andWe believe that a glimpse of the fifth paradigm platform can pave the way for its application in other

Keywords： Catalytic materials     Fifth paradigm     Intelligence-driven     Machine learning     Synergy of interdisciplinary    

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Hierarchical fractal structure of perfect single-layer graphene

T. Zhang, K. Ding

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 371-382 doi: 10.1007/s11465-013-0279-1

Abstract: The interior fractal-type structure was discovered to be the fifth space-filling curve from physical

Keywords： hierarchical fractal structure     fractal dimension     the fifth space-filling curve     multi-fractal structure    

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Studies on advanced water-cooled reactors beyond generation III for power generation

CHENG Xu

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 141-149 doi: 10.1007/s11708-007-0018-6

Abstract: power program motivates the country s nuclear community to develop advanced reactor concepts beyond generationselection criteria, two new types of water-cooled reactors are recommended for future Chinese nuclear power generationIt is a logical extension of the generation III PWR technology in China.

Keywords： Chinese situation     selection     generation     water-cooled     feasibility    

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Synthesis and photoconductivities of bisazo charge generation materials

ZHAO Qian, WANG Shirong, LI Xianggao, HE Lili

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 330-334 doi: 10.1007/s11705-008-0061-9

Abstract: Using these bisazo compounds as charge generation materials and CT-191(2-methyl-4-(-dibenzyl)aminobenzoaldehyde

Keywords： -6-aminobenzoxazole     4′-aminophenyl     transportation     xerographic performance     generation    

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Title Author Date Type Operation

MIMO handset antenna for 5G/WLAN applications

Yong CHENG, Jing LU, Bing-qing SHENG

Journal Article

Fifth-Generation (5G) Mobile Communication Technology (English)

10 Dec 2022

Conference Videos

Fifth-Generation (5G) Mobile Communication Technology (Chinese)

7 Dec 2022

Conference Videos

A novel grey wolf optimizer and its applications in 5G frequency selection surface design

Zhihao HE, Gang JIN, Yingjun WANG

Journal Article

Development of Deterministic Networking Techniques for Industrial Manufacturing

Wang Shuo, Wang Jiasen, Cai Lei, Huang Tao, Lu Hua, Liu Yunjie

Journal Article

Zero ground clearance dual antenna pair for metal-cased fifth-generation multiple input multiple output

Le CHANG, Wenbao HE, Xiaomin CHEN, Xiaoxue TAN, Juan CHEN, Kai KANG, Yang YANG

Journal Article

The Fifth Academic Conference of China Cancer Research Foundation

Journal Article

Non-ideal space division multiple access and its application

Ji-ying XIANG

Journal Article

The Fifth Academic Conference Of the Ministry of Chemical Engineering, Metallurgy and Materials Engineering

Journal Article

5G evolution promoting innovation of antenna systems

Feng GAO, Peng GAO, Wen-tao ZHU, Chen-xi ZHANG, Xian-kun MENG, Run-hong SHAN

Journal Article

Work Report of the Fifth Academician Conference of Chinese Academy of Engineering (excerpt)

宋健

Journal Article

Fifth Paradigm in Science: A Case Study of an Intelligence-Driven Material Design

Can Leng, Zhuo Tang, Yige Zhou, Zean Tian, Weiqing Huang, Jie Liu, Keqin Li, Kenli Li

Journal Article

Hierarchical fractal structure of perfect single-layer graphene

T. Zhang, K. Ding

Journal Article

Studies on advanced water-cooled reactors beyond generation III for power generation

CHENG Xu

Journal Article

Synthesis and photoconductivities of bisazo charge generation materials

ZHAO Qian, WANG Shirong, LI Xianggao, HE Lili

Journal Article