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Proceedings of the 39th Midwest Symposium on Circuits and Systems最新文献

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A new hardware algorithm for computing object centers 一种新的计算对象中心的硬件算法
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.593152
Ding Ma, E. Johnson, J. Ramírez-Angulo, A. de Luca
{"title":"A new hardware algorithm for computing object centers","authors":"Ding Ma, E. Johnson, J. Ramírez-Angulo, A. de Luca","doi":"10.1109/MWSCAS.1996.593152","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.593152","url":null,"abstract":"A new hardware algorithm for computing object centers has been developed. This algorithm is simple and fast, and it is easy to implement with software or hardware. A VLSI hardware implementation is presented and a VLSI chip of this algorithm has been fabricated. The test results show that the circuit can determine the center of an object within less than 200 ns for 32-bit inputs.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116331329","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
An interference cancellation system for spread spectrum communication channels with cochannel FM interferers 一种用于同频调频干扰扩频通信信道的干扰消除系统
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.587852
D. A. Rich, Munawar Kermalli, F. A. Cassara, J. J. Benson
{"title":"An interference cancellation system for spread spectrum communication channels with cochannel FM interferers","authors":"D. A. Rich, Munawar Kermalli, F. A. Cassara, J. J. Benson","doi":"10.1109/MWSCAS.1996.587852","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.587852","url":null,"abstract":"This paper examines the mutual interference that exists when broadband direct sequence spectrum signals and narrowband FM users are overlaid in the same frequency band. The paper also examines the ability of a novel adaptive tracking notch filter placed at the front end of the spread spectrum receiver to suppress strong cochannel narrowband FM users.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121611524","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: 3
A new CMOS differential amplifier circuit for improved slew rate performance 一种新的CMOS差分放大电路，提高了摆率性能
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.588122
M.E. Pulkin, J. Connelly
{"title":"A new CMOS differential amplifier circuit for improved slew rate performance","authors":"M.E. Pulkin, J. Connelly","doi":"10.1109/MWSCAS.1996.588122","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.588122","url":null,"abstract":"A novel differential amplifier circuit topology is presented which features a low stand-by current, yet achieves a large signal current drive capability many times greater than its bias current. Op amp slew rate can be improved greatly, while supply current remains relatively low.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121672281","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
One-dimensional block adaptive IIR filters 一维块自适应IIR滤波器
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.587873
A. Tan
{"title":"One-dimensional block adaptive IIR filters","authors":"A. Tan","doi":"10.1109/MWSCAS.1996.587873","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.587873","url":null,"abstract":"We present the block implementation of adaptive infinite impulse response filters based on least-mean-square algorithm and output-error formulation. This approach leads to a reduction in overall computational complexity and to a fast implementation involving parallel processors or serial processors and fast Fourier transform techniques. Computer simulations are also provided to demonstrate the practical applications of the proposed adaptive filters.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124092012","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
Computing system parameters to maximize the distance to saddle-node bifurcations 计算系统参数以最大化到鞍节点分岔的距离
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.593003
C. Cañizares
{"title":"Computing system parameters to maximize the distance to saddle-node bifurcations","authors":"C. Cañizares","doi":"10.1109/MWSCAS.1996.593003","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.593003","url":null,"abstract":"A new methodology to calculate parameters of a nonlinear system to maximize its distance to a saddle-node bifurcation is presented. The technique is thoroughly justified and demonstrated in sample power systems, specifying the conditions when it can be applied and the numerical mechanisms to obtain the desired solutions. A comparison is also carried out between the proposed method and a known methodology to determine closest saddle-node bifurcations in a particular power system model, showing that the new technique is a generalization of the previous method.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124130590","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
The application of interchange theorems to linear current-mode active networks 交换定理在线性电流型有源网络中的应用
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.593051
Kechang Wang, P. Aronhime
{"title":"The application of interchange theorems to linear current-mode active networks","authors":"Kechang Wang, P. Aronhime","doi":"10.1109/MWSCAS.1996.593051","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.593051","url":null,"abstract":"In this paper, four interchange theorems are stated and proved for a more general network configuration than has been previously employed. The new network configuration is more general in that points of application of the (current) excitations are not limited. The generalized network contains multiple nullors, multiple outputs and multiple excitations. The number of excitations may be greater than, equal to, or less than the number of nullors. Four theorems are provided which describe the transfer functions obtained when the leads of any one of the nullors in a network are interchanged in terms of the transfer functions of the unmodified network. The results are applied to an example network. These theorems serve as useful tools in the design and analysis of linear, current-mode signal processing circuits.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"53 14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125713222","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
An IDDQ-fault location scheme iddq故障定位方案
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.594137
Tsin-Yuan Chang, Weihong Chen
{"title":"An IDDQ-fault location scheme","authors":"Tsin-Yuan Chang, Weihong Chen","doi":"10.1109/MWSCAS.1996.594137","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.594137","url":null,"abstract":"In this work, an IDDQ fault location scheme is proposed and implemented in a chip to locate a single faulty branch (either a VDD branch or a GND branch or both) with a three-pattern test by using a hardware approach, which can be applied to the redundant VLSI structure for yield enhancement in the repairable design. The fault model includes IDDQ fault with or without single stuck on/off fault in the added transistors. The yield analysis of the proposed scheme is also presented.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126017802","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
New techniques for reflector network design in single-ended HEMT RF/microwave frequency multipliers 单端HEMT射频/微波倍频器反射网络设计新技术
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.593186
D.G. Thomas, G. Branner
{"title":"New techniques for reflector network design in single-ended HEMT RF/microwave frequency multipliers","authors":"D.G. Thomas, G. Branner","doi":"10.1109/MWSCAS.1996.593186","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.593186","url":null,"abstract":"Microwave and RF frequency multipliers have a wide range of uses in the electronic arena. It has been demonstrated that incorporating reflector networks into the design process can improve the performance of multipliers. This paper presents the development of alternative designs for reflector networks used in the designing of HEMT frequency multipliers. Conversion gains of 6.5 dB for narrowband designs (10% bandwidth) and 1 dB for wideband designs (35% bandwidth) have been attained. The fundamental and third harmonic rejection is approximately 30 dBc for the narrowband designs and 50 dBc for the wideband designs.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131998835","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
Subband image compression using wavelet transform and vector quantization 子带图像压缩利用小波变换和矢量量化
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.587822
M. El-Sharkawy, C. White, H. Gundrum
{"title":"Subband image compression using wavelet transform and vector quantization","authors":"M. El-Sharkawy, C. White, H. Gundrum","doi":"10.1109/MWSCAS.1996.587822","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.587822","url":null,"abstract":"The Discrete Wavelet Transform (DWT) has many useful properties when applied to image compression. The multiresolutional decomposition is of complexity O(n) and conserves the geometric image structure within each subband. A tree-structured coding scheme can efficiently exploit the inherent correlation in the subband representation. An algorithm is introduced which incorporates a fast tree-structured quantization scheme and partial search vector quantization. The algorithm described in this paper is a novel quantization thresholding scheme which uses the DWT to decompose an image into octave wide frequency bands, then quantizes the coefficients using a \"look ahead\" measurement of the image based on the low frequency sub-image inherent in the DWT. This algorithm then uses vector quantization to code the thresholded coefficients of the decomposed image. A partial search vector quantization algorithm is used to increase the speed of the quantization by using a sorted table of the energy content of the code vector. Each subband has an associated codebook which is generated using the Pairwise Nearest Neighbor (PNN) algorithm to produce an initial codebook and then uses the generalized Lloyd (GL) algorithm to arrive at a final codebook.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132317415","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: 11
The generalized state-space description of positive realness and bounded realness 正实数和有界实数的广义状态空间描述
Proceedings of the 39th Midwest Symposium on Circuits and Systems Pub Date : 1996-08-18 DOI: 10.1109/MWSCAS.1996.588069
He-Sheng Wang, F. Chang
{"title":"The generalized state-space description of positive realness and bounded realness","authors":"He-Sheng Wang, F. Chang","doi":"10.1109/MWSCAS.1996.588069","DOIUrl":"https://doi.org/10.1109/MWSCAS.1996.588069","url":null,"abstract":"Positive realness and bounded realness are two important issues in system theory. Some related applications about these notions include analysis and synthesis of passive networks, optimal designs in control and estimation, stability investigations in linear/nonlinear closed-loops; etc.. In this paper, we propose the equations of constant matrices, which are stabilizable and detectable realizations of impulse-free generalized state-space systems, to describe the positive real and bounded real properties. The established generalized positive real lemma and generalized bounded real lemma are necessary and sufficient. They are the extensions of results by B.D.O.Anderson nd S.Vongpanitlerd (1973), in which the state-space realizations are considered. The impulse-free generalized state-space systems contain both finite and nondynamic infinite modes. The state-space systems contain finite modes only. To express those algebraic restrictions among state variables is easier in the generalized state-space.","PeriodicalId":321968,"journal":{"name":"Proceedings of the 39th Midwest Symposium on Circuits and Systems","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132330071","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: 19
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