最新刊期
卷 ， 期 5 ， 1992
- 摘要：A global wiring refinement method based on mixed graph model is presented in this paper. The mixed graph model is the consequence of a series of precise vertex decomposition applied to the digraph representation of a floorplan. The graph model is utilized for new expression of global wiring information. Effects of global wiring on chip area can then be estimated and optimized in the layout refinement stage. Global wiring is automatically revised, so placement is affected and improved by wiring and block arrangement. Satisfactory results were obtained by several runs on practical chips.关键词：Layout;Mixed graph;Global routing;ASIC4|17|0更新时间：2025-12-08
- 摘要：A chaotic time series is extracted from a two-order driven electronic system, and a chaotic attrator is made by the reconstructing technique of 2-dimension time delays. A dynamical criterion which can verify the quality of reconstructing attractor is proposed, and the main idea is estimating some dynamic characteristics such as generalized dimensions Do （or/and the scaling spectrum of the singularities）, Lyapunov exponents and metric entropy from the original phase portrait and that of the recovery trajectory, respectively. The results show good consistency between the reconstructing attrator and the numerical simulation trajectory of the system in both quality and quantity.关键词：混沌吸引子;重构吸引子;广义维数;Lyapunov指数;测度熵2|117|6更新时间：2025-12-08
- 摘要：In this paper, the new technique and the new boundary condition （Low Field Point--LFP） are introduced in the 2-D numerical simulation of the electrical field profiles of planar diodes with Floating Field Limiting Rings （FFLR’s） and Variation of Lateral Doping （VLD）. By making use of this technique, the breakdown characteristics of the diode with FFLR’s and VLD’s can be simulated correctly and speedily, if only Poisson’s equation is solved. To overcome the shortcome of low calculation efficiency at high voltage conditions, a new set of scaling factors, which are related to the maximun of the applied voltages, are introduced to scaling Poisson’s eqn. The empirical formula of the ratio of the scaling factor to the applied voltage is given. Finally, the planar diode with two FFLR’s and a VLD which is formed by the composed doping of five Gaussian type distributions are simulated respectively, and the correct distributions of the electrical field and the potential are obtained.2|228|3更新时间：2025-12-08
- 摘要：<正> 湿敏传感器技术的一个新型领域——非线性湿敏传感器“DPC结露传感器”,于1991年12月5日在电子科技大学通过技术鉴定。 DPC结露传感器系电子聚合物复合膜电阻式非线性沮敏湿度检测元件。具有全湿度范围,高温与水份开关及结露检测正特性:非线性响应好,响应时间短,湿滞回差小,精度高、工作温度范围宽;耐污染、长期稳定与可靠性;体积小,无需加2|31|0更新时间：2025-12-08
- 摘要：In this paper, on the grounds of the single-trap model and the first order approximation of the relaxation function of electric field factor, the effects of multi-trap interference on thin oxide current relaxation spectroscopy （OCRS） is studied. The conditions are given under which the OCRS peaks related to the different kind of traps can be observed by OCRS method when there are many kinds of traps generated in the high electric field stressing oxide layer. The corrected formulas of both peak position and peak value have been obtained.关键词：Thin SiO2;Trap;Interference effect;Oxide current relaxation spectroscopy.2|22|3更新时间：2025-12-08
- 摘要：Uncertainty of numerical simulation in CV profiling is in fact a problem of uniqueness. The problem has been discussed in this work. A point by point multiple sweeps numerical algorithm consists of three aspects: （1） The dopant profile is obtained by several sweeps, and smaller convergent criterion is used for a following sweep; （2） Each sweep is composed of a point by point extraction process starting from the lowest bias point to the highest bias point; （3） The gradient sign at any point of the extracting dopant profile in the overall simulation process is defined by the sign of the same point of the profile obtained by the depletion approximation. The algorithm can not only deal with very steep dopant profiles, but also can cope with the extreme case, a step change of dopant distribution. Good agreement between the extracted profiles and the theoretical ones has been obtained.关键词：CV characteristic;Dopant profiling;Step distribution;uniqueness;Point by point multiple sweeps numerical algorithm2|63|3更新时间：2025-12-08
- 摘要：A design method on the bit-level pipelined multiplier is presented in this paper. An algorithm is derived to perform both unsigned and signed multiplication. The parallel semi-systolic array architecture dramatically saves register number, while latched Domino circuitry cuts down the device count, increases speed and lowers power consumption. A 8×8 bit multipler according to this method requires less than 3000 devices and can work at the frequency greater than 100 MHz using 2 μm CMOS technology.关键词：multiplier;pipeline;systolic array;Domino circuits2|93|1更新时间：2025-12-08
- 摘要：In this paper, the integrated type full color sensor with a-SiC/a-Si PIN hete-rojunction is investigated. The preparation and structure of this new film color sensor are given. The optimum design and device chracteristics, such as spectral response and dark current, are discussed. Experimental results show that properties of the color sensor are substantially improved by the wide gap a-SiC window layer and separated reaction chamber method.关键词：Amorphous silicon;Heterojunction;Optimum design;Color sensor2|33|1更新时间：2025-12-08
- 摘要：A parallel testing scheduling algorithm is presented in a distributed system. Dynamic scheduling is adopted, which maximizes the parallelism of testing. Unlike static testing scheduling, the dynamic testing scheduling algorithm is to allocate task to each processor in the process of testing. Idle time of each processor is minimized as much as possible.关键词：Testing scheduling;distributed scheduling;Parallel testing;Dynamic testing scheduling2|31|3更新时间：2025-12-08
- 摘要：The semi-indefinite network and the Complementary network are studied in the paper. some important properties of these networks are given. It is proved that a row-semi-indefinite network is really identical to the complementary network. So there is no difference for the two kinds of networks in their analysis and applications.关键词：Row-semi-indefinite;Column-semi-indefinite;Complementary network;Terminal suppression.2|11|0更新时间：2025-12-08
- 摘要：The problem of the interconnection of LSI and VLSI as the scale and speed of circuits increase is presented in this paper. Under the condition, the wave effects of such interconnection system will be apparent, and will affect the electrical performance of the circuits. For estimating these effects and connecting them with the circuit design, it is necessary to combine with the microwave theories and methods. This paper reviews the research works in this area.关键词：interconnection;Multichip;Time-Domain response;Crosstalk3|130|9更新时间：2025-12-08
- 摘要：<正> 北京大学微电子所于1991年4月在国内首次研制成功了用于驱动薄膜晶体管（TFT）有源矩阵液晶电视显示屏的专用GMOS集成电路。它包括栅驱动器——扫描电极总线驱动电路BDD1001和漏驱动器——信号电极总线驱动电路BDD2001两块IC。适合于驱动200线左右的TFT有源矩阵液晶电视显示屏。 用于TFT有源矩阵液晶电视显示屏的专用IC的具体结构参数、性能要求是由矩阵驱动方式、扫描方法、液晶材料的性质及电光特性、TFT的性3|59|2更新时间：2025-12-08
- 摘要：SIMOX is one of the most promising SOI technologies. SIMOX technology occupies a very important position in the development of thin film Si layer and deep submicrometer CMOS/SOI IC. This paper rewiews the formation of SIMOX wafers and the methods of producing high quality SIMOX wafers, and presents the characteristic processing and performance of thin film CMOS/SIMOX devices.The status and trends of SIMOX technology and CMOS/SIMOX devices are also discussed.关键词：Silicon on Insulator （SOI）;Separation by IMplantation of OXygen （SIMOX）;Ion implantation;Anneal;Metal-Oxide-Semiconductor （MOS）2|40|1更新时间：2025-12-08
- 摘要：This paper discusses the effect of the finite op-amp bandwidth on the stability of active filters. Pour typical circuit configurations of second-order bandpass filters are considered. The condition of stability for each configuration is obtained in terms of the op-amp bandwidth and the filter parameters, the pole-pair quality Q and the pole-pair frequency ωa. Computer aided simulation for these filter configurations shows good agreement with the theoretical results.关键词：Active filters;stability2|77|0更新时间：2025-12-08
- 摘要：The realization of high-Q switched-capacitor （SC） bandpass biquadratic- joints require very high capacitor spread and larger chip area. It is shown in this paper that these problems can be alleviated by utilizing the SC Q-multiplier bandpass structure.关键词：filter;switched capacitor;High-Q;Bandpass2|20|1更新时间：2025-12-08
- 摘要：<正> 现代电子功能材料与器件学科的一个新型领域——柔性复合压电功能薄膜,于1991年12月29日在电子科技大学通过技术成果鉴定。 P/C柔性复合压电薄膜系PVDF基压电聚合物与铁电陶瓷PZT等3—0型柔性复合压电PVDF/PZT薄膜系列,具有兼顾优异机械韧性与高度综合压电特性,柔韧性（C33<9N/m2柔韧强度）,耐震抗冲击、紧触检测灵敏性,可塑加工性(大面积成膜、2|28|0更新时间：2025-12-08
- 摘要：This paper presents a polling model wieh multiple Server. In the model, we consider the effects of server failures on system performance. The model is applicable to evaluate response characteristics of distributed real-time systems at the level of tasks or tran smission subsystems. It is significant to reliability design of distributed system. It is also important to optimization and selection of the reconfiguration strategy in fault-tolerant distributed systems.关键词：性能评价;轮询系;排队模型;可靠性2|32|4更新时间：2025-12-08
- 摘要：A Bipolar Analog Integrated Circuit Computer Aided Dissection and Verification System （BAIC CAD & CAV System） had been developed successfully. Its main funitions、characteristics and basic principles are discribed in the paper.关键词：Integrated Circuti （IC）;Dissection;verification;recognition;Abstraction2|18|0更新时间：2025-12-08
- 摘要：In this paper a novel Ku-band LNA with HEMT and MMIC is presented. HEMT andfeedback technology are used in the first stage of the amplifier, to achieve the optimization of noise figure and gain simultaneously. The design mathod for the amplifier is discussed. Twice hybrid microwave integrated circuit technology is used for MMIC. An input/output of the amplifier is BJ-120 waveguide. The amplifier has demonstrated noise figure of 1.9 dB with gain of 27±0.25 dB and an input/output VSWR less than 1.4 at the frequency range of 11.7--12.2GHz.关键词：Ku-band;HEMT;MMIC;low noise amplifier2|51|1更新时间：2025-12-08
- 摘要：<正> 由中国电子学会主办的第一届全国智能信息技术讨论会于1992年3月9日至12日在北京召开。来自全国各地的100余名科技工作者参加会议。会议经过三个阶段,1.大会综合报告,2.大会学术交流及录相交流,3.热点问题的即席讨论。大会主席、学部委员、自动化学会理事长杨嘉墀教授论述了国际智能和信息技术发展的概况。国家科委外国专家局局2|10|0更新时间：2025-12-08
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