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China., 1991 International Conference on Circuits and Systems最新文献

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A suboptimal algorithm for rectilinear Steiner problem 线性Steiner问题的次优算法
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184499
Yubo Ji, Meilun Liu
{"title":"A suboptimal algorithm for rectilinear Steiner problem","authors":"Yubo Ji, Meilun Liu","doi":"10.1109/CICCAS.1991.184499","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184499","url":null,"abstract":"The new algorithm does not construct a Steiner tree as the result in one time, but first gets simply an initial tree and then concentrates on refining it. The time complexity and space complexity of the algorithm is low and the percentage of reduction in suboptimal Steiner tree length over minimum spanning tree length is high.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121801433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High yield microwave matching network design and application 高产率微波匹配网络的设计与应用
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184442
C. Sheng, Yang Wang
{"title":"High yield microwave matching network design and application","authors":"C. Sheng, Yang Wang","doi":"10.1109/CICCAS.1991.184442","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184442","url":null,"abstract":"The yield of distributed and mixed distributed-lumped pi matching network are investigated using Monte Carlo simulation. For the different load impedance regions on the Smith Chart, the corresponding high yield structure of matching networks is provided. Also the yield optimization technique is modified to improve the yield of the above matching network. Finally, with the high yield structure of matching network, a single-stage MESFET amplifier is designed. Its yield is much higher than that of a previous amplifier designed by simplified real frequency technique thought its performances are similar.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114848103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modelling and estimation of fast-response AC motor drive with instrumental variables method 基于仪器变量法的快速响应交流电机驱动建模与估计
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184319
S. Tso, K. Tang, H. Zhang
{"title":"Modelling and estimation of fast-response AC motor drive with instrumental variables method","authors":"S. Tso, K. Tang, H. Zhang","doi":"10.1109/CICCAS.1991.184319","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184319","url":null,"abstract":"For the indirect field-oriented control of an induction motor employing a fast-response current-source cycloconverter, a suitable form of discrete-time model, considering measurement noises of the system variables of the motor, is established to facilitate high-performance control. A special algorithm is developed to facilitate simultaneous effective assessment of the motor parameters and evaluation of voltage references essential for the feedforward control of the power converter. The application of the instrumental variables estimation method in the algorithm has proved to be particularly useful in realistic noisy environments.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124091764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implementation of the PCM interface for the 60-channel TMUX with MH89790 用MH89790实现60通道TMUX的PCM接口
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184312
Wei Chen, Dejung Wang
{"title":"Implementation of the PCM interface for the 60-channel TMUX with MH89790","authors":"Wei Chen, Dejung Wang","doi":"10.1109/CICCAS.1991.184312","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184312","url":null,"abstract":"The 60-channel TDM-FDM transmultiplexer (TMUX) provides bi-directional conversion between PCM and FDM signals. It converts one FDM standard supergroup of 60 channels, in the frequency band 312 to 552 kHz, into two PCM streams of 2048 kbit/s, each of which carries 30 speech channels. The PCM interface of the 60-channel TMUX receives two HDB3 2048 kbit/s PCM line inputs and converts them into two serial linear two's complement format. In addition, it monitors (or transmits) PCM alarm information and detects (or inserts) signalling A, B, C and D bits. Since the functions of the PCM interface are very complex, in order to reduce the complexity, enhance the stability and the reliability of the circuit, the authors use the LSI chip MH89790 as the main chip to realize the functions of the interface.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127778619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Active integrated radiator for microwave sensing system 用于微波传感系统的有源集成辐射体
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184521
Yam Yu‐On, Lam Man-Lung, Ng Tsz-Bun
{"title":"Active integrated radiator for microwave sensing system","authors":"Yam Yu‐On, Lam Man-Lung, Ng Tsz-Bun","doi":"10.1109/CICCAS.1991.184521","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184521","url":null,"abstract":"The design and test of an active integrated radiator (AIR) which is suitable for use in phased arrays and spatial power combining are described. The circuit is constructed by using a removed-lateral-shell dielectric resonator (DR) to serve as a radiator and a resonator, with a BJT transistor as the active device. The high-Q DR is small in size and acts as a frequency selective element in the active radiator, and provides the high frequency stability and low phase noise (-90 dBc/Hz) characteristic. The performance of the DR radiator is discussed. This kind of active radiator can be used in a remote control system and a miniature Doppler radar system, particularly, in low microwave frequency band(<1 GHz).<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126532023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The equivalent circuit of photoconductive switches 光导开关的等效电路
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184472
Li Jinlin, Wang Dapeng
{"title":"The equivalent circuit of photoconductive switches","authors":"Li Jinlin, Wang Dapeng","doi":"10.1109/CICCAS.1991.184472","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184472","url":null,"abstract":"On the basis of experiments, a modified conductive expression and equivalent circuit of a photoconductive switch are proposed. According to this expression, the characteristics of photoelectron correlation measurements are analysed. The analysis agrees with experimental results and will be useful in electronic measurement by the photoelectron correlation method.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121779166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Speaker-dependent recognition of isolated Chinese words based on neural networks 基于神经网络的汉语孤立词依赖说话人识别
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184409
Yonghao Chen, B. Yuan
{"title":"Speaker-dependent recognition of isolated Chinese words based on neural networks","authors":"Yonghao Chen, B. Yuan","doi":"10.1109/CICCAS.1991.184409","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184409","url":null,"abstract":"This paper describes a speaker-dependent, isolated Chinese word recognition system based on neural networks. An improved neural network is applied to the recognition of speaker-dependent isolated Chinese words. The improved neural network is composed of several BP (back-propagation) networks. The isolated Chinese word sets are partitioned into a group of subsets based on a priori phonological knowledge. One of the BP networks identifies the subset to which the input word belongs; the others recognize the words in the subset. The improved neural network has the following advantages over a single BP network: training time is reduced; higher recognition accuracy is obtained with less training samples; new words can be easily added by adding new subsets.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130149326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Sliding-windowed weighted recursive least-square algorithm and its behaviors in stationary and nonstationary environments 滑动窗加权递推最小二乘算法及其在平稳和非平稳环境下的行为
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184302
Mengyou Hu, Junliang Chen
{"title":"Sliding-windowed weighted recursive least-square algorithm and its behaviors in stationary and nonstationary environments","authors":"Mengyou Hu, Junliang Chen","doi":"10.1109/CICCAS.1991.184302","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184302","url":null,"abstract":"A sliding-windowed weighted recursive least-square (SWRLS) algorithm is proposed, and tracking properties and steady-state performance of SWRLS algorithm for stationary and nonstationary environments are considered. Computer simulation shows that the experimental results are in agreement with theoretical ones.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130255182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Computer-aided design for VLSI VLSI计算机辅助设计
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184233
S.M. Kang
{"title":"Computer-aided design for VLSI","authors":"S.M. Kang","doi":"10.1109/CICCAS.1991.184233","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184233","url":null,"abstract":"New CAD issues related to MOS VLSI and optoelectronic integration technologies are reviewed. Especially, new issues on performance and timing driven physical layout, design for VLSI manufacturability and reliability using time-efficient simulation technologies are discussed. In contrast, CAD issues in optoelectronics are presently at the device modeling and circuit simulation level. CAD environments that support fast turnaround model development and circuit verification are discussed with specific optical device models of semiconductor lasers, photodetectors and optical logic gates.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133917281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implementation of 72 point DST-IV for 60 channel TDM-FDM transmultiplexer 实现72点DST-IV用于60通道TDM-FDM多路复用器
China., 1991 International Conference on Circuits and Systems Pub Date : 1991-06-16 DOI: 10.1109/CICCAS.1991.184536
Wang Li-feng, Wang Wen-bo, Wang Zhongde, D. Wang
{"title":"Implementation of 72 point DST-IV for 60 channel TDM-FDM transmultiplexer","authors":"Wang Li-feng, Wang Wen-bo, Wang Zhongde, D. Wang","doi":"10.1109/CICCAS.1991.184536","DOIUrl":"https://doi.org/10.1109/CICCAS.1991.184536","url":null,"abstract":"The implementation of 72 point DST-IV (discrete sine transform L type four) is presented in this paper. This design is used for the 60 channel transmultiplexer (TMUX) which implements the conversion between time division multiplex (TDM) signals and frequency division multiplex (FDM) signals. Based on a newly developed fast algorithm, two cascaded printed circuit boards are designed. They are composed of general high speed integrated circuits, with structures suitable for pipeline and parallel computation. A ROM direct control mode is adopted. Combined with the use of multiplexing techniques, the above measures promise the real-time implementation of 72-point DST-IV equipment with 125 mu s time duration at 9.216 MHz clock rate.<<ETX>>","PeriodicalId":119051,"journal":{"name":"China., 1991 International Conference on Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133935342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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