A／D与D／A转换器技术

Ａ／Ｄ与Ｄ／Ａ转换器技术ＷＤ９４５１１１０位１００Ｍ采样／秒流水线子区ＢｉＣ－ＭＯＳＡＤＣ＝Ａ１０－ｂ１００－Ｍｓａｍｐｌｅ／ｓｐｉｐｅｌｉｎｅｄ　ｓｕｂ－ｒａｎｇｉｎｇＢｉＣＭＯＳＡＤＣ［刊，英］／Ｓｏｎｅ，Ｋ．…／／ＩＥＥＥＪ．Ｓｏｌｉｄ－Ｓｔａ...     

Molecular Doped Polymer Light Emiting Diodes with Air－stable Aluminum as Cathode

ＭｏｌｅｃｕｌａｒＤｏｐｅｄＰｏｌｙｍｅｒＬｉｇｈｔＥｍｉｔｉｎｇＤｉｏｄｅｓｗｉｔｈＡｉｒ－ｓｔａｂｌｅＡｌｕｍｉｎｕｍａｓＣａｔｈｏｄｅ①②ＣＨＥＮＢａｉｊｕｎ，ＨＯＵＪｉｎｇｙｉｎｇ．ＸＵＥＳｈａｎｈｕａ，ＬＩＵＳｈｉｙｏｎｇ（ＳｔａｔｅＫｅｙ...     

优化双极器件的改善BiCMOS电路延迟的CAD方法

优化双极器件的改善ＢｉＣＭＯＳ电路延迟的ＣＡＤ方法＝ＡＣＡＤｐｒｏｃｅｄｕｒｅｆｏｒｏｐｔｉｍｌｚｉｎｇｂｉｐｏｌａｒｄｅｖｉｃｅｓｒｅｌａｔｉｖｅｔｏＢｉＣＭＯＳｃｉｒｃｕｉｔｄｅｌａｙ［刊．英］／Ｄｅｓ－ｏｕｋｌ．Ａ，Ｓ．…ＩＥＥＥＴｒａｎｓ．Ｃ...     

Magneto－optic Current Sensor Based on Total Reflections in a Quadrangular Bulk Glass

Ｍａｇｎｅｔｏ－ｏｐｔｉｃＣｕｒｒｅｎｔＳｅｎｓｏｒＢａｓｅｄｏｎＴｏｔａｌＲｅｆｌｅｃｔｉｏｎｓｉｎａＱｕａｄｒａｎｇｕｌａｒＢｕｌｋＧｌａｓｓ￥ＣＨＥＮＸｉｋｕｎ；ＱＩＵＪｉｎｇｈｅ；ＺＨＵＱｉｂｉａｏ；ＤＡＩＬａｉｆａ（ＳｈａｎｇｈａｉＵｎｉｖ...     

一种5V6位80MS／sBiCMOS闪烁ADC

一种５Ｖ６位８０ＭＳ／ｓＢｉＣＭＯＳ闪烁ＡＤＣ＝Ａ５Ｖ，６－ｂ，８０ＭＳ／ｓＢｉＣＭＯＳｆｔａｓｈＡＤＣ［刊，英］／Ｒｅｙｂａｎｉ，Ｈ．…∥ＩＥＥＥＪＳｏｌｉｄ－ＳｔａｔｅＣｉｒｃｕｉｔｓ．－１９９４．２９（８）．８７３～８７８开发出一种５Ｖ单电源６...     

带片上PLL和硬件指示器的320MHzCMOS三－8位DAC

带片上ＰＬＬ和硬件指示器的３２０ＭＨｚＣＭＯＳ三－８位ＤＡＣ＝Ａ３２０ＭＨｚＣＭＯＳｔｒｉｐｌｅ８ｈｉｔＤＡＣｗｉｔｈｏｎ－ＣｈｉｐＰＬＬａｎｄｈａｒｄｗａｒｅｃｕｒｓｏｒ［刊，英］／Ｒｅｙｎｏｌｄｓ，Ｄ／／ＩＥＥＥＪ．Ｓｏｌｉｄ－ＳｔａｔｅＣｉｒ－...     

A／D转换器高阶△－Σ调制的稳定性分析

Ａ／Ｄ转换器高阶△－Σ调制的稳定性分析＝Ｓｔａｂｉｌｉｔｙａｎａｌｙｓｉｓｏｆｈｉｇｈ－ｏｒｄｅｒｄｅｌｔａ－ｓｉｇｍａｍｏｄｕｌａｔｉｏｎｆｏｒＡＤＣ＇ｓ［刊，英］／Ｂａｉｒｄ，Ｒ．Ｔ．…∥ＩＥＥＥＴｒａｎｓ．Ｃｉｒｃ．ａｎｄＳｙｓｔ．－Ⅱ：Ａｎａ...     

OPTICAL FIBER-MOBILE COMMUNICATION

ＯＰＴＩＣＡＬＦＩＢＥＲ－ＭＯＢＩＬＥＣＯＭＭＵＮＩＣＡＴＩＯＮ￥ＦＥＮＧＸｉ－Ｙｕ；ＳＵＮＴｉｅ－Ｃｈｅｎｇ（ＤａｌｉａｎＵｎｉｖｅｒｓｉｔｙｏｆＴｅｃｈｎｏｌｏｇｙＤａｌｉａｎ１１６０２３）Ａｂｓｔｒａｃｔ：Ｔｈｅｔｅｃｈｎｉｑｕｅｏｆｍｏｂｉｌ...     

用BiCMOS工艺制作的高频高分辨率4级Σ△A／D转换器

用ＢｉＣＭＯＳ工艺制作的高频高分辨率４级Σ△Ａ／Ｄ转换器＝Ａｈｉｇｈ－ｆｒｅｑｕｅｎｃｙａｎｄｈｉｇｈ－ｒｅｓ－ｏｌｕｔｉｏｎｆｏｕｒｔｈ－ｏｒｄｅｒΣ△Ａ／ＤｃｏｎｖｅｒｔｅｒｉｎｂｉＣＭＯＳｔｅｃｈｎｏｌｏｇｙ［刊，英］／Ｙｉｎ，ＧＭ…∥ＩＥＥＥ...     

过采样△－Σ鉴频器

过采样△－Σ鉴频器＝Ａｎｏｖｅｒｓａｍｐｌｉｎｇｄｅｌｔａ－ｓｉｇｍａｆｒｅｑｕｅｎｃｙｄｉｓｃｒｉｍｉｎａｔｏｒ［刊，英］／Ｂｅａｒｄｓ，Ｒ．Ｄ．…∥ＩＥＥＥＴｒａｎｓ·Ｃｉｒｃ．ａｎｄＳｙｓｔ．－Ⅱ：ＡｎａｌｏｇａｎｄＤｉｇｉｔａｌＳｉｇｎａｌＰ...     

高压MZ—JTE终端边界元数值模拟

本文采用边界元数值方法，编制了统一的多区结终端扩展（Ｍｕｌｔｉｐｌｅ－Ｚｏｎｅ Ｊｕｎｃｔｉｏｎ Ｔｅｒ－ｍｉｎａｔｉｏｎ Ｅｘｔｅｎｓｉｏｎ，ＭＺ－ＪＴＥ）边界元程序，模拟高压ＭＺ－ＪＴＥ终端电场，电位分布，以平面结算例验证了边界元数值解精度及可靠性，定量模拟了界面态影响，取得了与国外用差分或有限元得到的结论相一致的结果。边界元方法的提出与算法，程序的成功开发，为ＭＺ－ＪＴＥ结构及其它终端结构的     

A hybrid BEM/WTM approach for analysis of the EM scattering fromlarge open-ended cavities

An effective hybrid boundary-element method (BEM) and wavelet-transform method (WTM) is proposed to analyze electromagnetic scattering from three-dimensional (3-D) open-ended cavities with arbitrary shapes. This hybrid technique formulates the original cavity problems by a magnetic field integral equation. The BEM is employed to establish the mapping between the original complex integral surface and the unit square. The WTM is used to reduce the density of the moment matrix. Since a surface integral equation has to be solved, the WTM requires a two-dimensional (2-D) wavelet basis to implement the numerical computation. The previous fast iterative algorithm for 2-D wavelets has been extended for efficiently constructing various 2-D wavelet basis functions by a tensorial product from two one-dimensional (1-D) regular multiresolution analyses. Unlike the conventional method of moments, the proposed hybrid technique can always obtain sparse moment matrix equations, which can be efficiently solved by sparse solvers. As the level scales for numerical discretization of cavities increase, larger compression rates can be obtained, which makes it possible for the hybrid BEM/WTM technique to efficiently solve scattering from large open-ended cavities with complex terminations. Numerical results are presented to demonstrate the merits of the proposed method     

FDTD analysis of lossy, multiconductor transmission linesterminated in arbitrary loads

A hybrid method is presented for incorporating general terminations into the solution of lossy multiconductor transmission lines (MTLs). The terminations are characterized by a state-variable formulation which allows a general characterization of dynamic as well as nonlinear elements in the termination networks. The method combines the second-order accuracy of the finite difference-time domain (FDTD) algorithm for the MTL with the absolutely stable, backward Euler discretization of the state-variable representations of the termination networks. A compact matrix formulation of the recursion relations at the interface between the MTL and the termination networks allows a straightforward coding of the algorithm. Skin effect losses of the line conductors as well as the effect of an incident field are easily incorporated into the algorithm. Several numerical examples are given which contain dynamic and nonlinear elements in the terminations. These examples demonstrate the validity of the method and show that the temporal and spatial step sizes can be maximized, thereby minimizing the computational burden     

弯张换能器的有限元及边界元分析

利用有限元法和边界元法相结合的方式,对I类凹筒结构弯张水声换能器进行了全面的分析。具体方法是借助于网格模型数据和计算结果数据共享的思想,将有限元法的结构、振动分析优势同边界元法的声场分析优势互补起来。相关试验表明,这种相结合的分析方式更全面、准确,是对水声换能器性能分析和优化设计手段的有益完善。     

Accurate calculation of fringe fields in the LHC main dipoles

The ROXIE program developed at CERN for the design and optimization of the superconducting LHC magnets has been recently extended in a collaboration with the University of Stuttgart, Germany, with a field computation method based on the coupling between the boundary element (BEM) and the finite element (FEM) technique. This avoids the meshing of the coils and the air regions, and avoids the artificial far field boundary conditions. The method is therefore specially suited for the accurate calculation of fields in the superconducting magnets in which the field is dominated by the coil. We will present the fringe field calculations in both 2d and 3d geometries to evaluate the effect of connections and the cryostat on the field quality and the flux density to which auxiliary bus-bars are exposed     

用边界元素法计算阶梯开口波导的反射系数

本文报道的是用边界元素法计算阶梯开口波导的反射系数。文中给出了用边界元素法求解波动方程问题的主要步骤和公式,并对本问题的一些计算细节作了说明。把在特殊状态下得到的结果与有关文献中的结果作了比较,从而看出这种方法的有效性。     

Magnetic dipole excitation of an insulated conductor of finitelength

Excitation of currents on an insulated conductor of finite length and with arbitrary terminations is studied for a magnetic dipole source. For matched terminations, the results agree closely with previous results for an infinitely long conductor, but other terminations produce end reflections that cause standing waves. Specific calculations for a vertical magnetic dipole source are presented, because this source produces the appropriate horizontal electric field and could be used in a borehole-to-borehole configuration. Numerical results for the induced current and secondary magnetic field indicate that long conductors produce a strong anomaly over a broad frequency range for any type of termination     

Linear lumped loads in the FDTD method using piecewise linear recursive convolution method

This letter gives a new algorithm to include linear lumped elements into finite difference time domain algorithm. The proposed method can efficiently account for two-terminal networks made of several lumped elements. The piecewise linear recursive convolution (PLRC) technique is used to implement lumped loads into Yee cells. Using this method, it is possible to simulate equivalent circuits of terminations for microstrip structures, integrated circuits, or digital devices. The advantage of the PLRC technique is addressed and simulation results validating this method are presented.     

Closed-form expressions for the coupling capacitance of metal fill tiles in VLSI circuits

A new closed-form formula for the computation of the coupling capacitance of metal tiles is presented in this work. It exploits the analytical solution of the Laplace equations of equivalent studied problems. Comparative results are given with two commercial tools employing the boundary element method (BEM) and the finite element method (FEM). The results show that the capacitance value computed by the proposed formula is in close agreement to the value obtained by the simulators.     

波导加载腔的场计算

本文基于边界元法(BEM),提出了一种新的计算波导加载谐振腔的谐振频率、外Q值和场分布的数值计算方法。计算表明,用BEM来处理波导加载腔这样的开放系统,具有计算时间短、机器内存少和精度高等优点。