{"title":"A new initial guess for sine function dedicated to sine-output direct digital frequency synthesizers","authors":"A. M. Sodagar, G. R. Lahiji","doi":"10.1109/ICCDCS.2000.869821","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869821","url":null,"abstract":"A new approach in sine amplitude approximation for sine-output direct digital frequency synthesizers \"parabolic approximation\" is presented. The proposed approximation provides an initial guess, which is very much closer to the target sine amplitude than previous approximations and can be simply implemented using full-digital circuitry.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123393957","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}
A. R. de Paula, C.M.F. Peris, H. Sidaoui, S. Sathaiah
{"title":"Digital processing of Raman spectra for diagnosis of atherosclerosis","authors":"A. R. de Paula, C.M.F. Peris, H. Sidaoui, S. Sathaiah","doi":"10.1109/ICCDCS.2000.869872","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869872","url":null,"abstract":"Discusses the digital processing methodology utilized to analyze Raman spectral data, with the ultimate aim of developing a rapid and automatic system for atherosclerosis diagnosis. Different types of digital and wavelet transform filters have been studied in order to reduce the CCD detector noise. After calibration, Raman spectra have been processed by an automatic program that classifies the target tissue into pathological or non-pathological using pattern recognition techniques. To validate the diagnosis inferred by the automated system, a collection of 70 spectra from human coronary arteries has been tested and compared with the histological method. The processing time of whole analysis is as small as 10 milliseconds when the program is executed on a processing station based on the ADSP 61061 Sharc digital signal processor.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123060181","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}
{"title":"The dynamic threshold voltage MOSFET","authors":"F. J. De la Hidalga-W, M. Deen","doi":"10.1109/ICCDCS.2000.869845","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869845","url":null,"abstract":"In this contribution, the development of the dynamic threshold voltage (DT) MOSFET is reviewed. The forward-biasing of the source-substrate junction was proposed for the first time in 1984 as part of an early strategy to improve the MOSFET performance when scaled. This led to the design of a quarter-micron technology, operating at 77 K, using a 0.6 V voltage supply and with the substrate connected to a fixed forward biasing potential. Ten years later, the operation of the gate controlled lateral bipolar transistor (GC-LPNP) and the SOI MOSFET with the substrate tied to the gate terminal both operating as dynamic threshold devices, were demonstrated. The SOI DTMOS was the best alternative for ultra low power CMOS applications and the GC-LPNP was used for some compact low power analog circuits. Aggressive technological improvements led to successful fabrication of bulk DTMOS, whose current representatives show impressive figures of merit regarding gate delay-power consumption products, well above those of conventional CMOS.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133627951","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}
{"title":"Power electronics technologies for the new millennium","authors":"S. Abedinpour, K. Shenai","doi":"10.1109/ICCDCS.2000.869867","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869867","url":null,"abstract":"Reviews the requirements of power electronics applications in electric utilities, transportation, aerospace, heavy industry and commercial electrical appliances for the new millennium. In particular, material and device technologies on silicon and wide band-gap semiconductors are discussed, along with switching circuits and topologies. Component- and system-level simulation, modeling and CAD requirements are evaluated. System-level optimization is essential in order to develop robust power systems at affordable cost.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132581469","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}
A. Annino, G. De Mercato, A. Raciti, A. Ciccazzo, G. Privitera
{"title":"On the electromagnetic emissions from mobile telephones: standards, instrumentation and probes","authors":"A. Annino, G. De Mercato, A. Raciti, A. Ciccazzo, G. Privitera","doi":"10.1109/ICCDCS.2000.869881","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869881","url":null,"abstract":"In this preliminary study we present the variability, in the axial direction, of the electrical field emitted from a cellular phone as function of the relative distance between the source (the cellular phone) and the probe at 5, 10, 15, 20, 30 and 50 cm. The reduction of the electric field intensity, due to presence of the human head between the source and the probe, at 50 cm of relative distance, was performed too. In this case we have detected a probably absorption of the head of about 60%.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"27 21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121553970","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}
{"title":"Gate triggering: a new framework for minimizing glitch power dissipation in static CMOS ICs and its ILP-based optimization","authors":"N. Mahapatra, R. Janakiraman","doi":"10.1109/ICCDCS.2000.869822","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869822","url":null,"abstract":"Glitches are an important source of power dissipation in static CMOS ICs that can contribute to as much as 70% of total power dissipation in certain cases (e.g., arithmetic modules). Although research into various aspects of glitch power dissipation has been undertaken in the past, most approaches to addressing it are ad hoc and limited in their applicability. In this paper, we propose a new framework, gate triggering, for systematically minimizing glitch power dissipation in static CMOSICs. The framework is based on the idea that glitches can be effectively minimized by triggering logic evaluation at a gate only when all of its inputs have stabilized. For this purpose, to every potentially glitchy gate is added a small amount of control logic, which, when enabled, triggers logic evaluation at the gate. A clocked delay chain is employed to generate enable signals at the proper times for all gates to be triggered. We present an integer linear programming (ILP) formulation to minimize the overheads (viz. delay element, control logic, and extra wiring) of our approach subject to a critical-path delay constraint. Application of the new approach to test circuits (such as ripple carry adder and array multiplier) in 1.2 /spl mu/ technology yields 95% or more elimination of glitch power dissipation with negligible area and timing overheads after optimization. An added advantage of the approach is that short-circuit power dissipation at all triggered gates is also minimized-short-circuit power dissipation in current standard-cell based designs can exceed 50% of the total power dissipation.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125493575","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}
D. Iparraguirre-Cardenas, G. F. Santillan-Quinonez
{"title":"Real-time digit-serial decimating filter using systolic arrays and implemented in a CPLD","authors":"D. Iparraguirre-Cardenas, G. F. Santillan-Quinonez","doi":"10.1109/ICCDCS.2000.869812","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869812","url":null,"abstract":"In this paper, a digit-serial decimating filter using a systolic architecture is presented for digit-sizes 1, 2 and 4. The flip-flop's clock enable inputs are used for the multipliers to work at half the clock frequency, so it is possible for the filter to work at a higher frequency than the apparent result of the timing simulation. The CPLD features are used to increase the clock frequency, as well as the different synthesis options. This design has a real-time computing capability. The architecture has been designed with Max+Plus II 9.01 and simulated using FLEX 10 K devices of the Altera family.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115248628","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}
{"title":"A new GCP cell technology for DRAM design","authors":"Harn-Bor Yang, Jyi-Tsong Lin","doi":"10.1109/ICCDCS.2000.869828","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869828","url":null,"abstract":"A GCP (Gate-Contact-Plate) cell for a high density, high performance DRAM has been proposed. The cell made in a P-well consists of an n-channel transistor and a capacitor with cell plate being connected to the word line directly to reduce leakage from cell-to-cell and P-N/sup +/ junction. In addition, combining a stack and a trench type to increase the capacitance of the cell forms the capacitor. This cell structure and its electrical analysis are realized and implemented by TMA simulator. The result shows that this cell has a 3.5-/spl mu/m-deep trench and a 7-nm-thick oxide. Based on 16M DRAM design, the GCP and a conventional cell with the same size, which is 1.16/spl times/2.03-/spl mu/m/sup 2/, can have the same capacitance. The GCP cell needs a trench depth 3.5 /spl mu/m whereas that of a conventional cell needs 7 um. Over 50% trench depth is saved and the process to produce the GCP cell becomes easier. Moreover, the leakage between adjacent cells is small enough, even if the cell size is scaled down to 0.8/spl times/1.43-/spl mu/m/sup 2/, compared to that of the conventional one. In addition, the performance of pass transistor is also demonstrated, which shows that the GCP cell can be operated properly in the DRAM circuit. Therefore, it is believed that the GCP cell is a promising candidate for a 64M DRAM and beyond.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131275881","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}
{"title":"Efficient and simple hardware realization for broadband GMSK-modulators using PLD-technology to enable MPEG2-transmissions in a standard TV-channel","authors":"C. Heiner","doi":"10.1109/ICCDCS.2000.869886","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869886","url":null,"abstract":"In this paper a cost- and space-reducing hardware realization of a broadband GMSK coder is described by using off-the-shelf PLD-technology. This flexible technology allows the realization of a coder that can process input datarates from a few hundred Kbit/s up to 8 Mbit/s by simply changing the following local elements: the low-cost crystal-oscillator and the output lowpass-filter. The second part of this paper describes a method which has not been realized in hardware yet. A quadrature modulation of the GMSK baseband spectrum by purely using simple digital techniques is presented.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133173753","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}
{"title":"A CMOS low voltage, low power continuous-time biquadratic cell","authors":"M. Fedeli","doi":"10.1109/ICCDCS.2000.869807","DOIUrl":"https://doi.org/10.1109/ICCDCS.2000.869807","url":null,"abstract":"A CMOS biquadratic cell with low voltage supply and low power consumption is proposed. To design the circuit a 0.25 /spl mu/m minimum lithography technology has been utilized and a g/sub m/-C configuration has been chosen to implement the basic block of the filter (the integrator). To reach the highest linearity, a fully differential structure has been exploited for the transconductor and, to correctly size it, particular attention to the mismatch problems has been paid. With a voltage supply of 1.2 V and a power consumption of 200 /spl mu/W, the transconductor presents a gain-bandwidth product of 30 MHz. For the biquadratic cell a cut-off frequency of 1 MHz with quality factor Q=1 have been imposed. The filter, with a power dissipation of 1 mW, reaches 1% of THD with 275 mV peak differential sinusoidal input signal, while the total input noise is about 190 /spl mu/V/sub rms/; in conclusion the cell presents a dynamic range of 60 dB and a SNDR peak of 48.6 dB.","PeriodicalId":301003,"journal":{"name":"Proceedings of the 2000 Third IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.00TH8474)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134184993","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}