{"title":"Electrical and thermal behaviour of nanopackaging interconnects with conventional and innovative materials","authors":"A. Chiariello, A. Maffucci, G. Miano","doi":"10.1109/SPI.2010.5483568","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483568","url":null,"abstract":"The paper deals with the modeling of the parasitic resistance of nanopackaging interconnects. Two kinds of material are considered: conventional (copper) and innovative (carbon nanotubes). Both of them are modeled taking into account the effects of temperature and size, both playing a relevant role in nanopackaging. Simple but physically-meaningful models for carbon nanotubes are proposed, based on the concept of the number of conducting channel and on the evaluation of the mean free path. The comparison between the materials is made with reference to a 30 μm-pitch pillar bump, proposed as chip-to-package interconnect.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130475014","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 application of Volterra series to IC buffer models","authors":"M. Telescu, I. Stievano, F. Canavero, N. Tanguy","doi":"10.1109/SPI.2010.5483562","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483562","url":null,"abstract":"This paper presents a Volterra-based method of behavioral modeling for the I/O buffers of digital ICs. While this technique brings a slight improvement in accuracy over previous ones, its main strength is a greater degree of generality. With a modeling approach less dependent on the nature of the devices and more easily extendable to include the effects of multiple inputs one may hope better meet the challenges of advancing technology. The proposed models can be obtained from device port transient responses only and can be easily implemented in any simulation environment, including SPICE-based circuit description software. Two illustrative examples conclude the paper.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128037549","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":"Nearfield-immunity scan on printed circuit board level","authors":"Oliver Kröning, Mario Krause, M. Leone","doi":"10.1109/SPI.2010.5483560","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483560","url":null,"abstract":"A new immunity scan method is presented for assessing the sensitivity of circuits in close proximity to the nearfield of noise emission sources. The measurement setup primarily consists of a positioning robot with a small field probe, feeded by a signal source and a power amplifier. A suitable calibration method to adjust the interference field strength is suggested. As an application example, the bit-error-ratio of a binary signal transmission is evaluated, depending on the interference field amplitude and the frequency.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134531078","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}
S. Müller, R. Rímolo-Donadío, M. Kotzev, H. Brüns, C. Schuster
{"title":"Effect of mixed-reference planes on single-ended and differential links in multilayer substrates","authors":"S. Müller, R. Rímolo-Donadío, M. Kotzev, H. Brüns, C. Schuster","doi":"10.1109/SPI.2010.5483587","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483587","url":null,"abstract":"In this paper, efficient physics-based models are used to examine diverse differential and single-ended link configurations on multilayer substrates with mixed reference planes (i.e. links running between ground and power planes). The effect of different plane assignments is studied and the results are validated with a general purpose full-wave solver. It is shown that the plane configuration affects mainly the coupling into the parallel-plate mode, and it could be either a broadband or narrowband effect depending on the link environment. Although the effect of ground vias can be appreciated with any plane configuration, the utilization of more ground planes helps to reduce the equivalent parallel-plate impedance and therefore to decrease the amount of energy coupled between the reference planes. A reduction of up to 1.8 dB of the transmission and an increase of more than 10 dB of the crosstalk could be observed at specific frequencies when the assignment of a single reference plane was changed from ground to power.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133133631","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 passivity verification of delayed rational function macromodels from networks characterized by tabulated data","authors":"A. Charest, M. Nakhla, R. Achar","doi":"10.1109/SPI.2010.5483556","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483556","url":null,"abstract":"In this paper, an efficient passivity verification algorithm is presented for delayed rational function based macromodels obtained from tabulated scattering parameter data. The proposed approach is based on a new half-size frequency dependent generalized eigenvalue problem, which reduces the necessary search region to a single finite interval along the imaginary axis. Numerical results validating improved efficiency of the proposed algorithm over previous techniques are also presented.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125814148","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 novel broadband boundary element approach for RL-extraction in lossy 3D interconnects","authors":"M. Al-Qedra, J. Aronsson, V. Okhmatovski","doi":"10.1109/SPI.2010.5483584","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483584","url":null,"abstract":"A new methodology for inductance extraction in 3D interconnects is presented. Volumetric current density is cast into the form of the unknown surface current density weighted by the exponential function corresponding to the skin-effect field attenuation. The approach reduces governing magneto-quasi-static volumetric integral equation to an equivalent surface integral equation. Such reduction allows for accurate broadband boundary element formulation of the RL extraction problem.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132521427","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":"Addressing practical issues with banded-variables in an MNA-based optoelectronic simulation framework","authors":"T. Smy, P. Gunupudi","doi":"10.1109/SPI.2010.5483565","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483565","url":null,"abstract":"This paper discusses practical considerations and implications related to the use of banded-variable phase in an MNA-based optoelectronic simulation framework. A methodology is presented to address issues arising from the use of such a banded-variable. The presented method proved to be robust and examples demonstrating the successful simulation of optoelectronic circuits using the suggested methodology are presented.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116694615","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}
S. de Rivaz, A. Farcy, D. Deschacht, T. Lacrevaz, B. Fléchet
{"title":"Benefit on interconnect performance of a relaxed wire density in a 45 nm node of the Back End of Line","authors":"S. de Rivaz, A. Farcy, D. Deschacht, T. Lacrevaz, B. Fléchet","doi":"10.1109/SPI.2010.5483594","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483594","url":null,"abstract":"High speed digital ICs require short delay between successive gates and minimum crosstalk levels between adjacent interconnects. But crosstalk and delay performance are degraded with interconnect length. So designers can use large drivers with fast response to compensate global falloff due to long interconnects with critical delay and crosstalk levels. They must also trade off IC's cost and consumption against performance. The present study proposes to relax interconnect density requirement in some dedicated intermediate metal level of the Back End Of Line (BEOL). By doing this, delay and crosstalk level due interconnect itself are consequently reduced whatever the driver size. This solution is especially beneficial to long interconnect alleviating IC's design constraints.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117311016","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":"Crosstalk mitigation enhanced by reference conductor position","authors":"Kachout Mnaouer, B. H. T. Jamel, Choubani Fethi","doi":"10.1109/SPI.2010.5483549","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483549","url":null,"abstract":"Electromagnetic coupling to cables has been a major source of electromagnetic compatibility and electromagnetic interference problems. In this paper, we propose a simple and easy technique to reduce crosstalk between three-conductor transmission lines. We used ribbon cable with circular cylindrical section immersed in a homogeneous medium. First, we present two electric equivalent models for three-conductor transmission lines. These models allow us to calculate crosstalk between conductors. Secondly, to validate the presented models, we compare the theoretical results with simulation data. Finally, by changing the position of the reference line we demonstrate that the crosstalk changes also and the smallest value is reached when we choose the reference line in the middle of the structure.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131397175","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":"Degradation of digital signal characteristics due to intermediate stages of interconnect failure","authors":"Daeil Kwon, M. Azarian, M. Pecht","doi":"10.1109/SPI.2010.5483578","DOIUrl":"https://doi.org/10.1109/SPI.2010.5483578","url":null,"abstract":"This paper examines the effect of intermediate stages of interconnect failure on the characteristics of digital signals. It was found that at data rates above several Gbps, the skin effect causes eye parameters in the digital domain to deteriorate in response to interconnect damage well before the creation of an open circuit. Fatigue tests were conducted to gradually stress a solder joint while monitoring changes to the eye parameters, including rise time, eye height, jitter, and the constituent components of jitter. All of these parameters were found to exhibit measurable degradation prior to complete separation of the solder joint. The jitter component making the largest contribution to the change in total jitter was intersymbol interference. The results support the conclusions from prior studies using time domain reflectometry and demonstrate their implications for digital electronics. Digital signal parameters offer an improved means of interconnect reliability assessment compared to traditional methods using DC resistance. The eye parameters also provide interconnect failure precursors, which may be useful as a product health monitoring tool for high speed electronics.","PeriodicalId":293987,"journal":{"name":"2010 IEEE 14th Workshop on Signal Propagation on Interconnects","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126030873","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}