MULTI-BEAM

作品数：70被引量：118H指数：6
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相关领域：电子电信更多>>
相关作者：付春华李烨李冬凤石代恒王捷更多>>
相关机构：北京真空电子技术研究所东南大学更多>>
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相关基金：国家自然科学基金中国博士后科学基金国家重点基础研究发展计划更多>>
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Dual-band multi-beam reconfigurable terahertz antenna based on graphene frequency selective surface
《红外与毫米波学报》2024年第5期628-633,共6页JIN Zhao RONG Yu QIAO Li-Ping YU Jing-Dong WU Fei GUO Chen TIAN Dou 
Supported by the Natural Science Foundation of Tibet Autonomous Region(XZ202401ZR0025);the National Natural Science Founda-tion of China(62164011,62301081);the Natural Science Foundation of Shaanxi Province(2022JQ-589)。
In this paper,a dual-band graphene-based frequency selective surface(GFSS)is investigated and the operating mechanism of this GFSS is analyzed.By adjusting the bias voltage to control the graphene chemical po-tential ...
关键词：THz antenna MULTI-BEAM GRAPHENE DUAL-BAND RECONFIGURABLE 
Demand-based dynamic bandwidth allocation in multi-beam satellites using machine learning concepts
《Intelligent and Converged Networks》2024年第2期147-166,共20页Shwet Kashyap Nisha Gupta 
In the realm of satellite communication,where the importance of efficient spectrum utilization is growing day by day due to the increasing significance of this technology,dynamic resource management has emerged as a p...
关键词：satellite communications multi-beam satellites machine learning weighted k-means clustering Voronoi tessellation knee-elbow method 
Distortion-aware beamforming design for multi-beam satellite communications with nonlinear power amplifiers
《Science China(Information Sciences)》2024年第6期355-365,共11页Xiang XIAO Li YOU Kezhi WANG Xiqi GAO 
supported by National Natural Science Foundation of China for Outstanding Young Scholars(Grant No.62322104);Prospective and Key Technologies for Industry of the Key Technologies R&D Program of Jiangsu(Grant Nos.BE2022067,BE2022067-5);Natural Science Foundation of Jiangsu Province(Grant No.BK20231415);Natural Science Foundation on Frontier Leading Technology Basic Research Project of Jiangsu(Grant No.BK20222001);Jiangsu Province Basic Research Project(Grant No.BK20192002);Fundamental Research Funds for the Central Universities(Grant Nos.2242022k60007,2242023K5003)。
Hardware components can cause different impairments,including power amplifier(PA)nonlinearities,which inevitably impact the system performance of satellite communications(SATCOM).In this work,we consider a multi-beam ...
关键词：multi-beam satellite communications nonlinear power amplifier energy and spectral efficiency tradeoff resource efficiency robust beamforming 
Highly efficient optics/microwave beam splitter based on frequency selective surface
《Chinese Optics Letters》2024年第6期136-141,共6页Qiao Sun Nianxi Xu Haigui Yang Dongzhi Shan Yang Tang Xin Chen Tongtong Wang Jinsong Gao Yu Cai 
supported by the National Natural Science Foundation of China (No.61901437)。
The development of hybrid optics/microwave communication systems puts forward a new requirement for beam splitters to efficiently transmit microwave signals and simultaneously reflect optical signals. Owing to mechani...
关键词：beam splitter multi-beam interference frequency selective surface high transmission 
Butler matrix enabled multi-beam optical phased array for two-dimensional beam-steering and ranging被引量：2
《Photonics Research》2024年第5期912-920,共9页ZUOYU ZHOU WEIHAN XU CHUXIN LIU RUIYANG XU CHEN ZHU XINHANG LI LIANGJUN LU JIANPING CHEN LINJIE ZHOU 
National Key Research and Development Program of China(2022YFB2804502);National Natural Science Foundation of China(6207030193,62090052,62135010);Special-Key Project of Innovation Program of Shanghai Municipal Education Commission(2019-07-00-02-E00075)。
Based on the wavelength transparency of the Butler matrix(BM)beamforming network,we demonstrate a multibeam optical phased array(MOPA)with an emitting aperture composed of grating couplers at a 1.55μm pitch for wavel...
关键词：OPTICAL tuning BEAM 
Mode Competition of Low Voltage Backward Wave Oscillator near 500 GHz with Parallel Multi-Beam
《Chinese Journal of Electronics》2024年第2期488-495,共8页Xiaoyan ZHAO Jincheng HU Haoran ZHANG Sidou GUO Yuming FENG Lin TANG Kaichun ZHANG Diwei LIU 
supported by the National Key Research and Development Program of China(Grant No.2017YFA0701003);the National Natural Science Foundation of China(Grant Nos.61988102 and 61921002);the Fundamental Research Funds for the Central Universities(Grant No.ZYGX2020ZB008);the Fund of Key Laboratory of Terahertz(THz)Technology,Ministry of Education,China。
A backward wave oscillator with parallel multiple beams and multi-pin slow-wave structure(SWS)operating at the frequency above 500 GHz is studied.Both the cold-cavity dispersion characteristics and CST Particle Studio...
关键词：Mode competition Backward wave oscillator Multi-pin slow-wave structure Parallel multiple beams Defects. 
Near-Field Beam Training for Holographic MIMO Communications: Typical Methods, Challenges and Future Directions被引量：1
《ZTE Communications》2024年第1期41-52,共12页SHEN Jiayu YANG Jun ZHU Chen DENG Zhiji HUANG Chongwen 
Holographic multiple-input multiple-output(HMIMO)has become an emerging technology for achieving ultra-high frequency spectral efficiency and spatial resolution in future wireless systems.The increasing antenna apertu...
关键词：holographic multiple-input multiple-output(HMIMO) beam training NEAR-FIELD equal interval multi-beam(EIMB)training hash multi-beam(HMB)training 
A True-Time-Delay Array Architecture for Wideband Multi-Beam Tracking
《China Communications》2023年第8期65-77,共13页Xiaowei Liu Guangliang Ren 
supported by the foundation of National Key Laboratory of Electromagnetic Environment(Grant No.202103012).
The true-time delay(TTD)units are critical for solving beam squint and frequency selective fading inWideband Large-Scale Antenna Systems(LSASs).In this work,we propose a TTD array architecture for wideband multi-beam ...
关键词：true-time delay(TTD) spatial filter variable fractional delay(VFD) wideband multi-beam tracking time delay estimation(TDE) 
Nanoscale multi-beam lithography of photonic crystals with ultrafast laser被引量：8
《Light(Science & Applications)》2023年第8期1604-1615,共12页Jiaqun Li Jianfeng Yan Lan Jiang Jiachen Yu Heng Guo Liangti Qu 
This work is supported by the National Natural Science Foundation of China(Grant no.52075289).
Photonic crystals are utilized in many noteworthy applications like optical communications,light flow control,and quantum optics.Photonic crystal with nanoscale structure is important for the manipulation of light pro...
关键词：LITHOGRAPHY BEAM OPTICS 
Sequential dynamic resource allocation in multi-beam satellite systems:A learning-based optimization method被引量：2
《Chinese Journal of Aeronautics》2023年第6期288-301,共14页Yixin HUANG Shufan WU Zhankui ZENG Zeyu KANG Zhongcheng MU Hai HUANG 
co-supported by the National Natural Science Foundation of China(No.U20B2056);the Office of Military and Civilian Integration Development Committee of Shanghai,China(No.2020-jmrh1-kj25).
Multi-beam antenna and beam hopping technologies are an effective solution for scarce satellite frequency resources.One of the primary challenges accompanying with Multi-Beam Satellites(MBS)is an efficient Dynamic Res...
关键词：Beam hopping Deep reinforcement learning Dynamic resource allocation Mixed-integer programming Multi-beam satellite systems Multi-objective optimization 
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