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FUNDAMENTAL: 作品数：576被引量：992H指数：12; 导出分析报告; 相关领域：理学更多>>; 相关作者：任全伟冯巧玲冯兴平李明政李艺更多>>; 相关机构：国家自然科学基金委员会中山大学首都师范大学中国科学院更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家高技术研究发展计划更多>>

Single-fundamental-mode cryogenic(3.6 K)850-nm oxideconfined VCSEL: 《Journal of Semiconductors》2024年第10期69-73,共5页Anjin Liu Chenxi Hao Jingyu Huo Hailong Han Minglu Wang Bao Tang Lingyun Li Lixing You Wanhua Zheng; supported by the National Natural Science Foundation of China(Nos.62275243,62075209,and 61675193);the Beijing Natural Science Foundation(No.Z200006).; Cryogenic oxide-confined vertical-cavity surface-emitting laser(VCSEL)has promising application in cryogenic optical interconnect for cryogenic computing.In this paper,we demonstrate a cryogenic 850-nm oxide-confined ...; 关键词：VCSEL cryogenic temperature cryogenic computing optical interconnect

An Ultra-wideband Doubler Chain with 43-65 dBc Fundamental Rejection in Ku/K/Ka Band: 《Chinese Journal of Electronics》2024年第5期1204-1217,共14页Long WANG Jixin CHEN Debin HOU Xiaojie XU Zekun LI Dawei TANG Rui ZHOU Hao QI Yu XIANG; In this paper,a double-balanced doubler chain with>43-dBc fundamental rejection over an ultra-wide bandwidth in 0.13-μm SiGe BiCMOS technology is proposed.To achieve high fundamental rejection,high output power,and h...; 关键词：Bandwidth DOUBLER Double-balanced Fundamental rejection Single-balanced

Fundamental Limitation of Semantic Communications:Neural Estimation for Rate-Distortion: 《Journal of Communications and Information Networks》2023年第4期303-318,共16页Dongxu Li Jianhao Huang Chuan Huang Xiaoqi Qin Han Zhang Ping Zhang; supported in part by the Natural Science Foundation of China under Grants 62022070,62341112,62293480,and 62293481,in part by Shenzhen high-tech zone project under Grant KC2022KCCX0041,in part by the key project of Shenzhen under Grant JCYJ20220818103006013,in part by the Shenzhen Outstanding Talents Training Fund 202002,in part by the Guangdong Provincial Key Laboratory of Future Networks of Intelligence under Grant 2022B1212010001,and in part by the Shenzhen Key Laboratory of Big Data and Artificial Intelligence under Grant ZDSYS201707251409055.; This paper studies the fundamental limit of semantic communications over the discrete memoryless channel.We consider the scenario to send a semantic source consisting of an observation state and its corresponding sema...; 关键词：Semantic communications semantic ratedistortion generative network Blahut-Arimoto algorithm

Reconfigurable Intelligent Surfaces for 6G:Nine Fundamental Issues and One Critical Problem被引量：7: 《Tsinghua Science and Technology》2023年第5期929-939,共11页Zijian Zhang Linglong Dai; supported by the National Key Research and Development Program of China(No.2020YFB1805005);the National Natural Science Foundation of China(No.62031019);the European Commission through the H2020-MSCA-ITN META WIRELESS Research Project(No.956256)。; Thanks to the recent advances in metamaterials,Reconfigurable Intelligent Surface(RIS)has emergedas a promising technology for future 6G wireless communications.Benefiting from its high array gain,low cost,and low pow...; 关键词：Reconfigurable Intelligent Surface(RIS) sixth generation mobile system(6G) wireless communications

Fundamental Concepts behind the Development of Gamma-Ray, Directed Energy Sources: 《Open Journal of Microphysics》2023年第3期27-35,共9页Eugene Oks; We discuss novel advanced concepts suitable for the practical design of gamma-ray sources of directed energy. One concept is based on the self-channeling of a powerful optical laser in a gas within a metal tube. Anoth...; 关键词：Gamma-Ray Lasers Directed Energy Sources Self-Channeling Quadrupole Nuclear Levels High-Order Harmonic Generation

A Review of Lightweight Cryptographic Schemes and Fundamental Cryptographic Characteristics of Boolean Functions: 《Advances in Internet of Things》2022年第1期9-17,共9页Nahla Fatahelrahman Ibrahim Johnson Ihyeh Agbinya; In this paper, we survey a number of studies in the literature on improving lightweight systems in the Internet of Things (IoT). The paper illustrates recent development of Boolean cryptographic function Application a...; 关键词：Internet of Things Lightweight Cryptographic Scheme Vectorial Boolean Functions IoT Differential Cryptanalysis

High RF power tests of the first 1.3 GHz fundamental power coupler prototypes for the SHINE project被引量：4: 《Nuclear Science and Techniques》2022年第1期107-119,共13页Zhen-Yu Ma Shen-Jie Zhao Xu-Ming Liu Yue-Chao Yu Hong-Ru Jiang Xiang Zheng Qiang Chang Zi-Gang Zhang Kai Xu Yan Wang Yu-Bin Zhao Hong-Tao Hou; supported by Shanghai Municipal Science and Technology Major Project(No.2017SHZDZX02)。; The Shanghai High Repetition Rate XFEL and Extreme Light Facility(SHINE)project will use 6001.3 GHz fundamental power couplers,which are modified based on TTF-Ⅲ power couplers,for continuous-wave operation with input...; 关键词：Superconducting accelerating cryomodule 1.3 GHz fundamental power coupler RF conditioning Test bench Horizontal test cryostat

Proactive Spectrum Monitoring for Suspicious Wireless Powered Communications in Dynamic Spectrum Sharing Networks被引量：1: 《China Communications》2021年第12期119-138,共20页Yu Zhang Guojie Hu Yueming Cai; the Natural Science Foun-dations of China(No.62171464,61771487);the Defense Science Foundation of China(No.2019-JCJQ-JJ-221).; This paper studies the proactive spec-trum monitoring with one half-duplex spectrum moni-tor(SM)to cope with the potential suspicious wireless powered communications(SWPC)in dynamic spec-trum sharing networks.The jamm...; 关键词：proactive spectrum monitoring sum er-godic monitoring rate jamming-assisted proactive spectrum monitoring HALF-DUPLEX fundamental trade-off dynamic spectrum sharing network

Design optimization of 3.9GHz fundamental power coupler for the SHINE project被引量：3: 《Nuclear Science and Techniques》2021年第11期174-190,共17页Zhen-Yu Ma Jin-Fang Chen; supported by Shanghai Municipal Science and Technology Major Project(No.2017SHZDZX02)。; The third harmonic superconducting cryomodule is being designed for the Shanghai High repetition rate XFEL and Extreme light facility(SHINE)project,which is under construction.In contrast to the European X-ray Free El...; 关键词：3.9 GHz fundamental power coupler Third harmonic cavity Superconducting cryomodule XFEL and extreme light facility(SHINE)Linac

Corrigendum to fundamental functional differences between gyri and sulci: Implications for brain function, cognition and behavior: 《Psychoradiology》2021年第1期54-54,共1页Xi Jiang Tuo Zhang Shu Zhang Keith MKendrick Tianming Liu; The original version of this paper contained an error in figure 5.This has been corrected online.; 关键词：function BEHAVIOR FUNDAMENTAL

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