一类新型无线电罗盘定向系统

介绍了一种新的无线电罗盘系统实现方案。通过对系统原理的数学分析,论证了其理论精度,并讨论了在工程上的可实现性。分析结果表明:该系统实现的条件要求不高,在电路上易于实现。在0~360o范围内,其理论定向角度误差可以保证<0.69o,在电路参数选取合适时,理论最小误差可达0.17o。     

业余无线电通信发展概况及新趋势

近几年,业余业务和卫星业余业务（通常我们所说的业余无线电）在我国发展非常迅速．设台数量与日俱增。随着各种无线电技术、电子技术的不断发展,业余无线电的活动内容和方式也在不断地快速变化着。     

建造通用无线电环境--地面数字电视走向未来之道

本文从各国地面数字电视标准之争，由产权理论解释了知识经济条件下，信息技术的标准化工作演进趋势。提出可以将“软件无线电”作为核心技术，将地面数字电视系统按通用无线电环境建造，是地面数字电视系统走向未来之道。     

2009年HAM牛什么?

作为一名无线电爱好者,一名HAM,2009年您的活动计划好了吗?相信在2009年无线电能成为您最好的生活伴侣,让您畅游在无线电的海洋中,享受无线电带来的通联乐趣。在此我们特请BG8SF为大家介绍一下有无线电意义的活动,希望能让大家更好地在2009年享受业余无线电带来的乐趣。     

无线电业务电磁兼容工作介绍

由于电子技术的飞速发展．各类电子电器设备越来越多地用于各行各业、千家万户。而大多数电工设备都有可能干扰无线电通信。因此．无线电业务不仅会受到各类无线电设备的干扰．还常会受到各种电子电工产品和工科医设备的有害干扰。怎样预防和排除无线电干扰、保护所有合法的无线电业务是     

A分会换届暨七届一次会议

3月23日~24日,全国无线电干扰标准化技术委员会无线电干扰测量方法和统计方法分技术委员会(SAC/TC79/SC1,简称“A分会”)换届暨七届一次会议在南宁召开。全国无线电干扰标准化技术委员会邢琳秘书、中国电子技术标准化研究院电磁技术研究中心王酣副主任、A分会委员、委员代表及顾问共120人出席了会议,会议由本届A分会委员兼秘书长崔强主持。     

TRIZ理论在电子技术领域的应用与研究

TRIZ理论在工业、建筑、微电子、教育、管理等领域都有发展,文章介绍TRIZ理论中的40个发明原理在电子技术领域的应用,这将对电子技术领域的技术创新研究有着重大的意义。     

框架理论在“数字电子技术”课程教学中的应用

本文分析了“数字电子技术”课程教学中出现的不能从知识建构规律上说明教学内容的问题,提出一种基于框架理论的教学方法,分析了其理论基础,说明了其在实践中的注意要点,并给出了教学过程的基本步骤。教学实践表明,这种教学方法具有一定的优越性,还可以推广到其他课程的教学中去。     

2005年度《微纳电子技术》主要学术计量指标

《2006年版中国科技期刊引证报告(扩刊版)》显示,《微纳电子技术》2005年度影响因子为0.522,他引率0.92,学科影响指标0.22,学科扩散指标0.90,引用刊数129,基金论文比0.51。其中影响因子在无线电电子学、电信技术类137种期刊中名列第十。《中国期刊引证报告(扩刊版)》是在“万方     

“模拟电子技术”教学改革的探讨

本文针对“模拟电子技术”课程教学中存在的问题,立足课程的理论性、工程性和实践性,从四个环节改进理论教学过程,三个层次完善实践教学体系,注重理论与实践有机融合、配套完善考核机制。实践表明,该教学改革能够激发学生的学习兴趣,提高教学效果。     

GPU-ACCELERATED FEM SOLVER FOR THREE DIMENSIONAL ELECTROMAGNETIC ANALYSIS

A new Graphics Processing Unit (GPU) parallelization strategy is proposed to accelerate sparse finite element computation for three dimensional electromagnetic analysis.The parallelization strategy is ...     

GPU加速混合场积分方程求解导体目标散射问题

利用图形处理单元（GPU）加速混合场积分方程（CFIE）分析导体目标电磁散射问题。较电场积分方程（EFIE）和磁场积分方程（MFIE）,CFIE消除了内谐振问题,并且具有更好的条件数。求解的数值方法为基于 RWG基函数的矩量法（MoM）。所有计算步骤均在 GPU上实现,包括：阻抗元素填充、电压向量填充、矩阵方程的共轭梯度（CG）求解、雷达散射截面（RCS）计算。在保证数值精确度的前提下获得了数十倍的速度提升。     

Efficient modeling and analysis of energy consumption for 3D graphics rendering

This paper proposes new models of GPU energy consumption from the perspectives of hardware architects and graphics programmers by performing an architecture-independent analysis of the classical graphics rendering pipeline which is still in widespread use today. The detailed analysis includes graphics rendering workload, memory bandwidth and energy consumption . Although the models are derived from classical 3D pipeline, they are extensible to programmable pipelines. There are many factors that affect the performance and energy consumption of 3D graphics rendering, such as the number of textures, vertex sharing, level of details, and rendering algorithms. The proposed models are validated by our simulation study and used to guide our 3D graphics hardware design and 3D graphics programming in order to optimize performance and energy consumption of our GPU prototypes which have been successfully fabricated in SMIC 0.13 μm CMOS technology.     

Higher-order node-based TDFEM for transient electromagnetic analysis in rectangular waveguide

Higher-order Time Domain Finite Element Method (TDFEM) based on the nodal inter- polation is proposed for two-dimensional electromagnetic analysis. The detailed algorithms of the method are presented firstly, and then the accuracy, CPU time and memory consumption of the higher-order node-based TDFEM are investigated. The high performance of the presented approach is validated by numerical results of the transient responses of Transverse Electric (TE) field and Transverse Magnetic (TM) field in a rectangular...     

Error improvement of temporal discretization in TDFEM for electromagnetic analysis

Integral method is employed in this paper to alleviate the error accumulation of differential equation discretization about time variant t in Time Domain Finite Element Method （TDFEM） for electromagnetic simulation. The error growth and the stability condition of the presented method and classical central difference scheme are analyzed. The electromagnetic responses of 2D lossless cavities are investigated with TDFEM; high accuracy is validated with numerical results presented.     

UHV输电线路中绝缘子串电位分布的仿真计算

利用三维电磁场分析软件Ansoft对铁塔、导线、绝缘子按实际尺寸建立三维模型。综合考虑了芯棒、伞群、球头球窝、导线、连接金具、铁塔、均压环等因素对1000kV特高压输电线路中的绝缘子表面电场分布进行了计算。分析了导线、连接金具、均压环、铁塔、三相中其余两相对Ⅰ型绝缘子串和Ⅴ型绝缘子串电场分布的影响。计算结果可以为绝缘子的正确使用和优化设计提供参考。分析可知,使用均压环可使绝缘子上的电位分布有较大地改善。     

An advanced finite element strategy for thermal stress field investigation in aluminium interconnections during processing of very large scale integration multilevel structures

An advanced strategy for modelling the thermal stress induced in aluminium interconnections during processing of multilevel structures is presented. The advantage of the approach described is that it allows the residual stresses from one processing step to be used as the initial conditions for a subsequent step. 2D elasto-plastic model (von Mises plastic criterion) is implemented in Finite Element Code and it is shown that even after significant relaxation by plastic deformation, high thermal stress resides in the aluminium line in both width and thickness directions. The technique demonstrated here is for a silicon-glass–aluminium-glass structure. However, it is readily extended to more complex situations and material combinations.