KA-BAND

作品数：36被引量：44H指数：4
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Unveiling Cloud Vertical Structures over the Interior Tibetan Plateau through Anomaly Detection in Synergetic Lidar and Radar Observations
《Advances in Atmospheric Sciences》2024年第12期2381-2398,共18页Wei ZHAO Yinan WANG Yongheng BI Xue WU Yufang TIAN Lingxiao WU Jingxuan LUO Xiaoru HU Zhengchao QI Jian LI Yubing PAN Daren LYU 
jointly funded by the Second Tibetan Plateau Scientific Expedition and Research Program of China under Grant 2019QZKK0604;the National Natural Science Foundation of China(Grant Nos.92044303 and 42001294).
Cloud vertical structure(CVS)strongly affects atmospheric circulation and radiative transfer.Yet,long-term,groundbased observations are scarce over the Tibetan Plateau(TP)despite its vital role in global climate.This ...
关键词：Ka-band cloud profiling radar LIDAR anomaly detection cloud base heights cloud top heights Tibetan Plateau 
Ka-Band metalens antenna empowered by physics-assisted particle swarm optimization(PA-PSO)algorithm被引量：1
《Opto-Electronic Science》2024年第10期23-33,共11页Shibin Jiang Wenjun Deng Zhanshan Wang Xinbin Cheng Din Ping Tsai Yuzhi Shi Weiming Zhu 
supported by the National Natural Science Foundation of China(61975026,62375232,6237523262205246 and 61875030);Creative Research Groups of the National Natural Science Foundation of Sichuan Province(2023NSFSC1973);the Shanghai Pilot Program for Basic Research,the National Key Research and Development Program of China(No.2023YFF0613600);Science and Technology Commission of Shanghai Municipality(No.22ZR1432400).
Design of multiple-feed lens antennas requires multivariate and multi-objective optimization processes,which can be accelerated by PSO algorithms.However,the PSO algorithm often fails to achieve optimal results with l...
关键词：multiple-feed lens antennas PA-PSO algorithm metalens metasurfaces Ka-band antenna 
A low-profile dual-broadband dual-circularly-polarized reflectarray for K-/Ka-band space applications
《Frontiers of Information Technology & Electronic Engineering》2024年第8期1145-1161,共17页Xuanfeng TONG Zhi Hao JIANG Yuan LI Fan WU Lin PENG Taiwei YUE Wei HONG 
supported by the National Natural Science Foundation of China(Nos.62122019,62293492,and 61901106);the ZTE Corporation and the State Key Laboratory of Mobile Network and Mobile Multimedia Technology,and the Fundamental Research Funds for Central Universities,China(No.2242022k60008)。
A low-profile dual-broadband dual-circularly-polarized(dual-CP)reflectarray(RA)is proposed and demonstrated,supporting independent beamforming for right-/left-handed CP waves at both K-band and Ka-band.Such functional...
关键词：Broadband DUAL-BAND Dual-circularly-polarized REFLECTARRAY Shared-aperture 
Ka-band thin film lithium niobate photonic integrated optoelectronic oscillator被引量：1
《Photonics Research》2024年第6期1283-1293,共11页RUI MA ZIJUN HUANG SHENGQIAN GAO JINGYI WANG XICHEN WANG XIAN ZHANG PENG HAO X.STEVE YAO XINLUN CAI 
National Key Research and Development Program of China(2019YFA0705000);National Natural Science Foundation of China(62293523);Advanced Talents Program of Hebei University(521000981006);Natural Science Foundation of Hebei Province(F2021201013).
Photonics integration of an optoelectronic oscillator(OEO)on a chip is attractive for fabricating low cost,compact,low power consumption,and highly reliable microwave sources,which has been demonstrated recently in si...
关键词：OPTOELECTRONIC MODULATOR RESONATOR 
Study of the ability of SWOT to detect sea surface height changes caused by internal solitary waves
《Acta Oceanologica Sinica》2024年第5期54-64,共11页Hao Zhang Chenqing Fan Lina Sun Junmin Meng 
The National Natural Science Foundation of China under contract Nos U2006207 and 42006164.
Surface Water and Ocean Topography(SWOT)is a next-generation radar altimeter that offers high resolution,wide swath,imaging capabilities.It has provided free public data worldwide since December 2023.This paper aims t...
关键词：internal solitary waves Surface Water and Ocean Topography(SWOT) Ka-band radar interferometer(KaRIn) Nadir altimeter(NALT) sea surface height anomaly(SSHA) normalized radar cross section(NRCS) 
Design of Ka-Band Phased Array Antenna with Calibration Function
《Computers, Materials & Continua》2023年第3期6251-6261,共11页Xiao Liu Xingyao Zeng Chengxiang Hao Haibo Zhang Zhongjun Yu Ting Lv Meng Li Zhen Zhang 
In this paper,we have proposed a novel structure of Ka-band based phased array antenna with calibration function.In the design of Kaband antenna,the active phased array system is adopted and the antenna would work in ...
关键词：KA-BAND phased array antenna T/R module 
A Ka-band calibratable phased-array front-end chip with high element-consistency
《Science China(Information Sciences)》2022年第12期319-320,共2页Shiyan SUN An'an LI Yingtao DING Zipeng CHEN Wei WANG Sijia JIANG Zhiming CHEN Baoyong CHI 
Dear editor,Active phased arrays are widely used in radar and communication systems due to their characteristics such as rapid wave beam steering, agile beamforming, and spatial power synthesis. The phased-array syste...
关键词：synthesis array ELEMENT 
Macro-and Micro-physical Characteristics of Different Parts of Mixed Convective-stratiform Clouds and Differences in Their Responses to Seeding被引量：2
《Advances in Atmospheric Sciences》2022年第12期2040-2055,共16页Dejun LI Chuanfeng ZHAO Peiren LI Cao Liu Dianli GONG Siyao LIU Zhengteng YUAN Yingying CHEN 
supported by the National Key Research and Development Project(Grant No.2019YFA0606803,2016YFA0601704);the National Natural Science Foundation of China(Grant No.41925022);the Innovation and Development Project of China Meteorological Administration(CXFZ2022J036);the Science and Technology Development Fund of Hubei Meteorological Bureau(Grant No.2017Y06,2017Y07,2016Y06,2019Y10).
This study investigates the cloud macro-and micro-physical characteristics in the convective and stratiform regions and their different responses to the seeding for mixed convective-stratiform clouds that occurred in ...
关键词：airborne Ka-band Precipitation Radar(KPR) mixed convective-stratiform clouds convective region stratiform region cloud seeding cloud microphysical properties 
Microphysical characteristics of precipitating cumulus cloud based on airborne Ka-band cloud radar and droplet measurements被引量：1
《Atmospheric and Oceanic Science Letters》2022年第2期65-70,共6页Lei Wei Mengyu Huang Rong Zhang Yuhuan Lü Tuanjie Hou Hengchi Lei Delong Zhao Wei Zhou Yuan Fu 
funded by the National Key Research and Devel-opment Program of China[grant number 2017YFC1501405];the National Natural Science Foundation of China[grant numbers 41975180,41705119,and 41575131];the National Center of Meteorology,Abu Dhabi,AE(UAE Research Program for Rain Enhancement Science)。
Based on cloud-probe data and airborne Ka-band cloud radar data collected in Baoding on 5 August 2018,the microphysical structural characteristics of cumulus(Cu)cloud at the precipitation stage were investigated.The c...
关键词：Airplane observation Microphysical processes Ka-band cloud radar CUMULUS 
Effect of Wall Thicknesses on Broadband Design of Ka-Band TE_(21)-Mode Coupler
《Journal of Electronic Science and Technology》2021年第4期350-356,共7页Wei Zheng Chao Wang Wen-Li Yang Chun-Bang Wu 
the National Natural Science Foundation of China under Grant.No.61627817.
Commonly,the classical formulas are suitable for designing the TE21-mode coupler for the operating frequency under Ka-band by ignoring the wall thickness.However,in practice,for the one operated in the Ka-band,such cl...
关键词：Coupling loss ISOLATION TE21-mode coupler useless hole 
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