Tongxi Wang, Amin M. R. Khandaker, K. Yasutomi, S. Kawahito
{"title":"A digital calibration technique for folding-integration/cyclic cascaded ADCs","authors":"Tongxi Wang, Amin M. R. Khandaker, K. Yasutomi, S. Kawahito","doi":"10.1109/MWSCAS.2015.7282020","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282020","url":null,"abstract":"A digital calibration technique for folding-integration/cyclic cascaded (FICC) analog-to-digital converters (ADCs) is proposed in this paper. The calibration is done by compensating non-ideal errors in digital domain. The errors generated during each converting cycle and the final effects of them are calculated with properly established model in charge domain according to the behaviors of the FICC ADC. The simulation results show that the maximum integral nonlinearity (INL) is improved from +60.9/-36.8 LSB to +0.89/-0.95 LSB, and the differential nonlinearity (DNL) is improved from +71.5/-2.0 LSB to +0.64/-0.62 LSB for 18-bit resolution. Both high-resolution and high-linearity are simultaneously achieved in the FICC ADC by employing the proposed digital calibration technique.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"37 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131111406","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}
M. Hossain, M. Sanaullah, A. H. Yousuf, Azzedin Es-Saki, M. Chowdhury
{"title":"Analytical analysis of the contact resistance (Rc) of metal-MoS2 interface","authors":"M. Hossain, M. Sanaullah, A. H. Yousuf, Azzedin Es-Saki, M. Chowdhury","doi":"10.1109/MWSCAS.2015.7282027","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282027","url":null,"abstract":"Molybdenum disulfide (MoS2) is a new emerging 2D material like graphene for applications in solid state, optoelectronic and many other devices. MoS2 has good bandgap for electronic applications. Graphene has almost zero bandgap and that will lead to impractical switching operation for MOSFET. MoS2 based switching devices will not have this limitation. The 2D flat nature of MoS2 would be suitable for integration and scaling at nanoscale dimensions. Due to its unique electrical, thermal, optical, and mechanical stability, MoS2 is considered as the new super-material for post-silicon and very high frequency era. However, the MoS2-contact mismatch issues would lead to the reduction of MoS2 based device performance. In this work we have investigated the MoS2 contact resistance (which is one of the most critical parameters) in terms of band structure, Schottky barrier and other material properties. Several material such as W, Sn, Pt, Au, Sc and Cu are studied to determine the appropriate contact resistance with MoS2. In this analysis we have concluded that Tungsten (W) is the most suitable material that gives a low contact resistance for both p- and n-type MOSFETs with MoS2 channel.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133592469","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":"An 8Gbps discrete time linear equalizer in 40nm CMOS technology","authors":"A. Ismail, S. Ibrahim, M. Dessouky","doi":"10.1109/MWSCAS.2015.7282098","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282098","url":null,"abstract":"This paper introduces a new circuit technique for a discrete-time linear equalizer that can be used with current-integrating decision feedback equalizers. The DTLE samples and amplifies the input data in a clock phase then holds the output data in the other clock phase. The latter is the integrating phase of a current-integrating DFE. The DTLE is designed for a half-rate 8-Gbps serial-link receiver equalizer in 40-nm CMOS technology and draws 190-uW from a 1.1-V supply. The technique uses clocked current sources improving the power consumption.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"217 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115103504","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}
Chong Zhang, D. Liang, Cheng Li, G. Kurczveil, J. Bowers, R. Beausoleil
{"title":"High-speed hybrid silicon microring lasers","authors":"Chong Zhang, D. Liang, Cheng Li, G. Kurczveil, J. Bowers, R. Beausoleil","doi":"10.1109/MWSCAS.2015.7282210","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282210","url":null,"abstract":"We report on low power consumption, high direct modulation speed performance of compact hybrid silicon microring lasers. By integrating a novel thermal shunt, device joule heating is significantly reduced, leading to low threshold, high continuous wave (cw) lasing temperature as high as 105 °C. A 3 dB bandwidth of 7.8 GHz is measured and 12.5 Gbps eye diagram is obtained.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116490323","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 design methodology for Application Specific Integrated Algorithm Systems (ASIAS)","authors":"N. Magotra, J. Downing, Jason Rotondo","doi":"10.1109/MWSCAS.2015.7282115","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282115","url":null,"abstract":"There is a confluence of customer demand and technical semiconductor manufacturing capabilities that are speeding up the development and deployment of system solutions on chips. We refer to these `system solutions' as Application Specific Integrated Algorithm Systems (ASIAS). Quite often these systems need to use a mix of floating-point and fixed-point data, necessitating the need for quantization analysis that can often slow down the development cycle. This paper focuses on a design approach that aims to dramatically cut down the time spent on quantization analysis issues with tools that are readily available. By helping to simplify the overall design process we hope to move us closer to the day when producing working ASIAS silicon will be almost as simple as current manufacturing processes using 3D printing.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124772125","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}
M. Giraud-Carrier, C. Hill, T. Decker, A. Hawkins, J. Black, S. Almquist, H. Schmidt
{"title":"Rubidium diffusion in microscale spectroscopy and slow light platforms","authors":"M. Giraud-Carrier, C. Hill, T. Decker, A. Hawkins, J. Black, S. Almquist, H. Schmidt","doi":"10.1109/MWSCAS.2015.7282129","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282129","url":null,"abstract":"This paper presents an approach to quantifying the diffusion rate of rubidium in glass microchannels. These types of microchannels are often used in integrated systems (chip and fiber based) which utilize light and rubidium vapor interactions to produce quantum interference phenomena such as slow light. The test platforms reported here were made using glass capillaries connected to larger glass chambers through glassblowing. Rubidium diffusion was monitored in two different ways. First, fluorescence measurements were taken over time at different points down the length of the capillary. Second, optical absorption measurements were taken through the large glass chambers on either side of the capillaries. Results indicate that reaching measurable atomic densities in microscale geometries can take many days or even weeks.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128324649","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":"FPGA-based network-resonance applebaum adaptive arrays for directional spectrum sensing","authors":"N. Udayanga, A. Madanayake, C. Wijenayake","doi":"10.1109/MWSCAS.2015.7282165","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282165","url":null,"abstract":"Cognitive radio (CR) depends on the accurate detection of frequency, modulation, and direction pertaining to radio sources, in turn, leading to spatio-temporal directional spectrum sensing. False detections due to high levels of noise and interference may adversely impacts the CR's performance. To address this problem, a novel system architecture that increases the accuracy of directional spectrum sensing in situations with low signal to noise ratio (SNR) is proposed. This work combines adaptive arrays, multidimensional filter theory and cyclostationary feature detection. A linear array Applebaum beamformer is employed in conjunction with a two-dimensional (2-D) planar-resonant beam filter to perform highly directional receive mode wideband beamforming with improved spatial selectivity. A Xilinx Virtex-6 based field programmable gate array (FPGA) prototype of the improved beamforming front-end verifies a clock frequency of 100.9 MHz. The proposed network-resonant Applebaum array provides 6 dB, 5.5 dB and 5 dB noise suppression capability reflected in the spectral correlation function for input SNRs of -20 dB, -25 dB, and -30 dB, respectively, for an RF beam direction 50° degrees from array broadside.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130956720","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}
J. M. Stout, Jacob E. Johnson, Suresh Kumar, A. Woolley, A. Hawkins
{"title":"Particle trapping in electrostatically actuated nanofluidic barriers","authors":"J. M. Stout, Jacob E. Johnson, Suresh Kumar, A. Woolley, A. Hawkins","doi":"10.1109/MWSCAS.2015.7282169","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282169","url":null,"abstract":"This paper introduces a device that can be applied to the trapping and analysis of nanoparticles in fluids. The device is fabricated on silicon substrates using standard microfabrication techniques. Sacrificial etching is used to form nanofluidic channels of precise dimensions. A section over these channels is made deformable by thinning the SiO2 overcoat, and an electrode over the deformable section of these channels can be used to electrostatically constrict the channel walls. This deformed wall creates a physical barrier, which can trap and hold particles. Fluorescently labeled 50 nm diameter nanobeads are shown to trap behind pinched barriers in a 100 nm tall nanochannel.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126250004","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}
Ali Nikoofard, Siavash Kananian, A. Fotowat-Ahmady
{"title":"Phase calibration in mutual injection-pulled quadrature oscillators","authors":"Ali Nikoofard, Siavash Kananian, A. Fotowat-Ahmady","doi":"10.1109/MWSCAS.2015.7281997","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7281997","url":null,"abstract":"An alternative approach to analysis, design and implementation of injection-locked quadrature oscillators is proposed in this paper. A novel technique is presented which allows the effects of the mismatches due to imbalances in the I/Q paths in transceivers (TRX) to be mitigated, and hence the orthogonality of the these vectors be maintained. This technique alleviates the effects of imbalances in a transceiver between I/Q paths, which would otherwise pose many threats to the performance of the system, namely image rejection ratio (IRR) degradation, gain reduction in mixers, desensitization of the RX, and ect. As a design example, a CMOS quadrature oscillator (QOSC) at the frequency of 3.5GHz has been designed and simulated using TSMC 0.18μm technology. Monte-Carlo simulations have also been performed which indicate that the design is robust to unwanted PVT variations.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121474160","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 PA for MBOFDM-UWB and IR-UWB transmitters","authors":"Praveen Gunturi, D. Kotecki","doi":"10.1109/MWSCAS.2015.7282193","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282193","url":null,"abstract":"This paper describes the design of 4.2 to 5.9 GHz CMOS power amplifier (PA) for applications in ultra-wideband (UWB) commuincations. The PA operates in the linear region over the input range of -12 dBm and delivers an output power of 6 dBm. The post layout simulations indicate the power added efficiency (PAE) is more than 35% at 5 GHz frequency and more than 20% between 4.2 GHz and 5.9 GHz. The input matching is realized by resistive feedback and the output and the interstage matching are realized using source degeneration inductors. The input and output reflection coefficients are less than -5 dB over the frequency from 4.2 GHz to 5.9 GHz. The PA can also be used in IR UWB transmitters and provides energy efficiency of 11.3%. The total chip area is approximately 0.7mm2 including electrostatic discharge (ESD) protection. The design is implemented in 180nm CMOS technology.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133699343","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}