2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)最新文献

{"title":"Adaptive computing in real-time applications","authors":"Benedikt Janßen, Fynn Schwiegelshohn, M. Hübner","doi":"10.1109/NEWCAS.2015.7182057","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182057","url":null,"abstract":"Self-adaptive systems aim to satisfy system constraints in an environment with sudden parameter changes. Moreover, they enable new possibilities to cope with dynamic run-time requests. Their self-adapting capabilities lead to a highly dynamic system behavior which leads to development and runtime overheads. Additional real-time constraints increase the design space complexity further. The challenge is to reduce the complexity of application and system design. Recently, self-adaptive systems have been discovered for applications in emerging domains, such as the Internet of Things or Cyber-Physical Systems. Here, real-time support is often required for the respective systems. This paper surveys approaches to handle task scheduling/mapping, as well as resource management in these systems.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127646138","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":"Optimized temperature profile based pulse generator for innovative Phase Change Memory","authors":"A. Kiouseloglou, G. Navarro, A. Cabrini, L. Perniola, G. Torelli","doi":"10.1109/NEWCAS.2015.7181990","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7181990","url":null,"abstract":"In this paper, we discuss the increase of the SET state resistance distribution dispersion in Phase Change Memory (PCM) based on innovative materials, namely Ge-rich Ge2Sb2Te5 (GST). A new programming technique, which consists in linearly decreasing the temperature in the active region of the memory device, is studied and a circuit capable of generating the desired pulse is presented and simulated. Post-layout simulations demonstrate the functionality of the circuit and its potential to be used for the programming of PCM cells based on alternative-to-GST materials.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125535404","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":"Miniature antenna for breast tumor detection","authors":"Z. Katbay, S. Sadek, R. Lababidi, A. Pérennec, M. Roy","doi":"10.1109/NEWCAS.2015.7182107","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182107","url":null,"abstract":"Microwave imaging is recognized as a potential candidate for biomedical applications, such as breast cancer detection. In this context a miniature antenna is used for quantitative imaging of inhomogeneous tissues. Microwave breast imaging (MBI) uses low power and longer wavelength signals to obtain information about breast tissues, and promises a safer and more accurate modality for regular breast scanning. This paper presents a miniature microstrip antenna that can be placed in contact with the breast model to investigate the presence of malignant tissues. A miniature antenna has been designed, and placed toward a breast phantom model with inhomogeneous tissues. Images are successfully obtained by using scattering electromagnetic waves (S11) from the designed model. The antenna was then manufactured and tested.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129008615","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":"Ultra WideBand RADAR system for human chest displacement","authors":"M. Muller, G. Abib","doi":"10.1109/NEWCAS.2015.7182055","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182055","url":null,"abstract":"This paper presents an Ultra-WideBand (UWB) RADAR system for distance and breathing measurement based on a Step Recovery Diode emitter delivering 230 ps pulse signal width. The reflected signal by the target is sampled on an oscilloscope and the system shows a 1.3 cm human chest displacement when the target is 30 cm distant from the RADAR. Then, the oscilloscope is replaced by a low cost and low complexity CMOS circuit, developed in our laboratory and named Time Delayed Sampling and Correlation (TDSC). Experimental results show a resolution of 5 cm and a maximum range of 25 cm for a metallic target.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130397161","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 gain estimation of an event-driven wake-up controller dedicated to WSN's microcontroller","authors":"Florent Berthier, E. Beigné, P. Vivet, O. Sentieys","doi":"10.1109/NEWCAS.2015.7182064","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182064","url":null,"abstract":"To deal with Wireless Sensor Node's energy constraints, new architectural solutions have to be found. This paper proposes to analyze a WSN microcontroller sub-system power consumption to extract the main power contributors according to different applicative execution phases. The objective is to come out with the energy reduction potentiality offered by an additional module called Wake-Up Controller. This block is able to substitute to the main CPU for current tasks like data transfers between sensors, memories or radio and fine grain power/frequency management of the entire node's sub-modules. Power simulations of a microcontroller sub-system based on FDSOI28 technology, with and without the Wake-Up Controller use, are proposed. Results are presented for applicative scenarios ranging from very low to high activity rates. This study exhibits power gains from 14.5% to 76% in the full range attesting the future design of this new module.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133707860","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 single photon avalanche detector in a 180 nm standard CMOS technology","authors":"Imane Malass, W. Uhring, J. L. Normand, N. Dumas, F. Dadouche","doi":"10.1109/NEWCAS.2015.7182011","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182011","url":null,"abstract":"We present the performance characteristics of a Single Photon Avalanche Detector fabricated in a 180 nm standard CMOS image sensor technology. The SPAD implemented in 8 different diameters between 5 μm and 40 μm shows a DCR below 10 kHz at 15°C with a low afterpulsing probability (0.2% at 300 mV), a good photodetection efficiency (20%) and a very good time resolution (80 ps at 450 nm).","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"40 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123457849","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":"Energy-efficient control through power mode placement with discrete DVFS and Body Bias","authors":"Y. Akgul, D. Puschini, L. Vincent, M. Altieri, P. Benoit","doi":"10.1109/NEWCAS.2015.7182056","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182056","url":null,"abstract":"Dynamic Voltage and Frequency Scaling (DVFS) is a very efficient way to manage performance/power trade-off in embedded systems. It consists in switching between low and high voltage-frequency operating points according to the required processing performance. However, with novel technologies such as UTBB FD-SOI, circuits can be designed to work on very wide frequency ranges. In this case, substantial power savings can be achieved through efficient power mode design. In this paper, we propose a method to determine the optimal position of intermediate operating points that maximizes the power reduction on the operating frequency range by exploiting Body Bias combined with DVFS. Results from circuit measurements illustrate the efficiency of the proposed method with average power reduction up to 35% on a 1800MHz wide operating frequency range, with peaks up to 50.3%.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121929743","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":"Near-threshold computing for very wide frequency scaling: Approximate adders to rescue performance","authors":"L. Soares, S. Bampi, Andre Luis Rodeghiero Rosa, E. Costa","doi":"10.1109/NEWCAS.2015.7182030","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182030","url":null,"abstract":"Near-threshold computing in CMOS is a promising alternative for any application which can tolerate very wide voltage-frequency scaling (VFS). Internet-of-Things (IoT) devices will operate in very different power-performance modes, from sub-MHz to peaks of hundreds of MHz. The nano-power range which is achievable in deca-nanometer CMOS at near-VT is the alternative we explore for VLSI circuits (8051 processor, filters, and ISCAS benchmark circuits). This paper proposes a method to design CMOS circuits for a wide dynamic range of VFS, and targets near-threshold for best efficiency. A standard-cell based design methodology specific for near-VT is demonstrated here in for a commercial 65nm CMOS process. Power and timing variability are characterized, so that variation-aware and yet ultra-low supply voltage designs are enabled. Our cell design method avoids unnecessary upsizing and it focus on near- and well above threshold regions of operation. For the study cases of medium complexity notch filter design (24kgates), and an 8051 compatible core (20kgates) we demonstrate 63X to 77X energy/operation savings for applications that tolerate ultra-wide frequency scaling (from hundreds of KHz to 1GHz) in their operating modes. The results were obtained using the minimal cycle time achievable at each supply voltage. The extremely low and highly-variable performance at sub- and near-VT have to be addressed by new logic design paradigms. In this paper we also exploit the use of approximate adders to increase the timing performance of a class of digital filter circuits, to enable compensating the performance loss inherent to near-VT operation in CMOS. Our results show that the effort to explore energy savings in low power optimized circuits through the approximate computing approach is validated with energy and worst path delay reductions up to 19.4% and 36.7% respectively, compared to the precise arithmetic implementation, without compromising the filters frequency response. Our approximate adder method enables higher levels of energy efficiency in CMOS VLSI filters.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115390477","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":"Design of an STT-MTJ based true random number generator using digitally controlled probability-locked loop","authors":"Satoshi Oosawa, T. Konishi, N. Onizawa, T. Hanyu","doi":"10.1109/NEWCAS.2015.7182089","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182089","url":null,"abstract":"This paper presents a design of a True Random Number Generator (TRNG) using a Spin Transfer Torque Magnetic Tunnel Junction (STT-MTJ) device. Since the probability of the STT-MTJ-based TRNG is locked using a digitally controlled feedback loop, the sensitivity of the feedback gain can be reduced greatly, which eliminates a high-gain amplifier in the feedback loop. It is demonstrated using the circuit simulator (NS-SPICE where the STT-MTJ model is established based on 90nm CMOS/MTJ process technologies) and MATLAB that the random sequences generated from the TRNG become 50%, where the gain of signal converters in the probability-locked loop is the precision of at most 9bit.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116161976","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":"Subthreshold operation of Nauta's operational transconductance amplifier","authors":"A. N. Irfansyah, A. Nicholson, Julian Jenkins, T. J. Hamilton, T. Lehmann","doi":"10.1109/NEWCAS.2015.7182065","DOIUrl":"https://doi.org/10.1109/NEWCAS.2015.7182065","url":null,"abstract":"This paper investigates the subthreshold operation of the inverter-based operational transconductance amplifier for the potential use in very low power data conversion systems. Circuit analysis and sizing strategies are presented, and a first order continuous-time delta-sigma modulator circuit is used as a case study to verify the performance of the amplifier when operating in subthreshold region. We demonstrate experimental results using a digitally configurable Nauta operational transconductance amplifier implemented in a 180nm CMOS process which shows up to 97.76 percent power reduction when 600mV is used instead of 1.8V as supply with better figure of merit and without significant signal-to-noise distortion ratio penalty highlighting its significant potential at subthreshold operation.","PeriodicalId":404655,"journal":{"name":"2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115624375","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}