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期刊Leaded gasoline to Be phased out in China
《中国油气:英文版》1997年第3期160-160,共1页
关键词:BE Leaded gasoline to Be phased out in China 
期刊浅议工程造价在建筑工程中存在的问题与解决措施——以路桥工程为例
《电子测试》2015年第4X期162-163,共2页唐晓华 
工程造价在建筑工程中发挥着不可替代的作用。众所周知,任何建筑工程项目都要考虑建造成本、资金投入和获得的经济利益。要进行预算,得出建筑工程的大致花费,然后在合理的时间内,保证质量完成工程,最终获得收益。本文从工程造价的基本...显示全部
关键词:路桥工程 工程造价 管理 阶段性 投资管理 
期刊DESIGN AND ANALYSIS OF MULTI-STEP AMPLITUDE QUANTIZATION WEIGHTED 2-D SOLID-STATE ACTIVE phased ARRAY ANTENNAS
《电子科学学刊:英文版》1994年第1期71-78,共8页高铁 李建新 郭燕昌 
An aperture design technique using multi-step amplitude quantization for two-dimensional solid-state active phased arrays to achieve low sidelobe is described. It can be applied to antennas with arbitrary complex aper...显示全部
关键词:SOLID-STATE active phased array antenna MULTI-STEP AMPLITUDE QUANTIZATION Low SIDELOBE AMPLITUDE and phase errors Gain loss Failure 
期刊Cognate pulse sorting method based on beam missions characteristics
《系统工程与电子技术:英文版》2016年第6期1183-1190,共8页Wenlong Lu Junwei Xie Heming Wang Chuan Sheng 
In most multi-function phased array radar applications,multiple missions, including airspace searching and target tracking,are usually performed simultaneously by the digital beam-forming technique and the time dividi...显示全部
关键词:optimal model PULSE classification RELATIVITY and INDEPENDENCE multi-function phased array RADAR 
期刊A Low phase Noise Ring-VCO Based PLL Using Injection Locking for ZigBee Applications
《电路与系统(英文)》2013年第3期304-315,共12页Fatemeh Talebi Hassan Ghafoorifard Samad Sheikhaei Sajjad Shieh Ali Saleh 
A low power low phase noise frequency synthesizer with subharmonic injection locking is proposed for ZigBee applications. The PLL is based on a ring VCO to decrease area and production cost. In order to improve phase ...显示全部
关键词:ZIGBEE Frequency SYNTHESIZER phased Locked Loop Injection LOCKING Technique 
期刊Silicon photonics for telecom and data‐com applications
《光电进展(英文)》2020年第10期31-56,共26页Kiyoshi Asakawa Yoshimasa Sugimoto Shigeru Nakamura 
In recent decades,silicon photonics has attracted much attention in telecom and data-com areas.Constituted of high refractive-index contrast waveguides on silicon-on-insulator(SOI),a variety of integrated photonic pas...显示全部
关键词:silicon photonics integration of photonics and electronics CMOS process-compatible fabrication optical interconnect transceiver optical multi-port switch optical phased array 
期刊A Review of Wideband Wide-Angle Scanning 2-D phased Array and Its Applications in Satellite Communication
《通信与信息网络学报(英文)》2018年第1期21-30,共10页Yan Li Shaoqiu Xiao Jiajia Guo 
This work is supported by the National Natural Science Foundation of China(Nos.61731005,61331007);the Outstanding Youth Foundation of Sichuan Province(No.2015JQ0011).
In this review,research progress on the wideband wide-angle scanning two-dimensional phased arrays is summarized.The importance of the wideband and the wide-angle scanning characteristics for satellite communication i...显示全部
关键词:WIDEBAND wide-angle scanning twodimensional phased array satellite communication 
期刊Ultrasound Imaging in Nuclear Reactors Cooled by Liquid Metals
《声学期刊(英文)》2015年第1期11-24,共14页Victor D. Svet Dmitrii A. Dement'ev 
In nuclear reactors cooled by liquid metals, ultrasound is the only type of field that allows obtaining images of the reactor cores and diagnostics of the integrity of the fuel assemblies. The article discusses the fe...显示全部
关键词:ULTRASOUND Imaging phased ARRAYS Liquid METALS NUCLEAR Reactors ACOUSTIC LENS 
期刊phase-controlled propagation of surface plasmons
《光:科学与应用(英文版)》2017年第1期466-474,共9页Basudeb Sain Roy Kaner Yehiam Prior 
supported by the Israel Science Foundation grant no.1242/12;by the ICORE program;by an FTA grant from the Israel National Nano Initiative;by the Minerva Foundation.
Directional emission of electromagnetic radiation can be achieved using a properly shaped single antenna or a phased array of individual antennas.Control of the individual phases within an array enables scanning or ot...显示全部
关键词:FDTD NSOM phased array plasmonic wakes surface plasmons 
期刊Spectral properties of entangled photon pairs generated via quasi-phased-matched spontaneous parametric down-conversion被引量:1
《中国光学快报:英文版》2015年第11期78-82,共5页夏茂鹏 李健军 胡友勃 盛文阳 高冬阳 庞伟伟 郑小兵 
supported by the National 863 Program of China(No.2015AA123702);the National Natural Science Foundations of China(Nos.11204318 and61275173);the National Defense Science and Technology Foundation(No.J2920130004)
The spectral properties of entangled photon pairs generated via quasi-phased matching in spontaneous parametric down-conversion are proposed and demonstrated experimentally. A general mathematical model for evaluating...显示全部
关键词:ENTANGLED PARAMETRIC SPONTANEOUS phased MATCHING c 
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