{"title":"Radiated emissions testing of space wireless electric power transfer systems","authors":"G. Ramos, Jiann-Shiun Yuan","doi":"10.1109/SECON.2012.6196994","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196994","url":null,"abstract":"Lately there has been a growing interest in the wireless power transfer systems (WPT) research. However, little (if any) has been researched on the effects of these systems into other sub-systems or devices. Since the principle of operation is by inducing a magnetic field to transfer power wirelessly, electromagnetic emissions could damage or induce a monetary error in other systems. This study was performed to enhance the understanding of how WPT systems should be tested to determine if they are electromagnetically compatible with other systems operating in close proximity. Since the primary focus of this study is to evaluate the possibility of using wireless power transfer systems for space applications, a WPT prototype was tested following military standard guidelines (used for NASA space applications). A WPT prototype (~4W) was tested to demonstrate the described approach. Results showed that the system radiated magnetic and electric fields that where within the limits established by the Mil-Std-461E. A similar approach can be taken to determine household WPT systems EMC compliance by applying the Federal Communications Commission and the Comité Européen standards.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128764384","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 wideband microwave double-negative metamaterial with non-Foster loading","authors":"T. Weldon, K. Miehle, R. Adams, K. Daneshvar","doi":"10.1109/SECON.2012.6196909","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196909","url":null,"abstract":"Although the potential for wideband double-negative metamaterials using non-Foster circuit elements was described more than a decade ago, progress has been somewhat limited. Therefore, the analysis and simulation of a wideband microwave metamaterial are presented, where non-Foster elements are used as loads on split rings and on electric resonators. Using the Faraday law of induction, load conditions are derived for wideband negative permeability of a split ring. Using the Ampere circuital law, load conditions are derived for wideband negative permittivity of an electric resonator comprised of two disks connected by a rod. Simulations and extracted parameters confirm the underlying theory, and a wideband double-negative behavior is observed from 1.0 to 4.5 GHz for the proposed design.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128354269","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":"Smart building architecture: Communication subsystem","authors":"M. Peterson, D. Rodríguez","doi":"10.1109/SECON.2012.6197006","DOIUrl":"https://doi.org/10.1109/SECON.2012.6197006","url":null,"abstract":"The communication subsystem is one of the systems from the digital computer architecture project. This subsystem is in charge of creating the data link between a Motorola Xoom tablet and three sensor subsystems. The sensor subsystems will be sending data wirelessly to the communication subsystem using Zigbee technology. This information will then be translated from the Zigbee protocol to Bluetooth protocol and sent to the Xoom tablet to be displayed using an Android application created by the display subsystem. The following report is an introduction to the design approach that will be taken to create the system to perform these tasks.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128640616","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":"High-linearity two-watt power amplifier for multiband wireless applications","authors":"M. Faiz, S. Earles, Bin Hou, Shuyun Zhang","doi":"10.1109/SECON.2012.6196897","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196897","url":null,"abstract":"Amplifiers in the final stages of wireless transmitters boost the power level of the up-converted signals, but the ultimate power level is not same for all transmitters. One specific amplifier can be used as a driver in a cellular base station or as last stage in applications like a pico-cell. However, the amplifier has to meet the stringent linearity requirement imposed by these different standards. In this paper, we present a highly linear single stage two watt power amplifier in GaAs HBT process. The amplifier can be externally matched at the input and output, thus provides flexibility to optimize it across a specific frequency band of interest between 400 MHz and 2700 MHz. The design includes a novel approach of utilizing the nonlinear base-collector and base-emitter diode capacitances of a transistor biased in the saturation region to improve the linearity of the amplifier. The transistor provides a nonlinear feedback path between the output and input of the amplifier and thus minimizes the third order intermodulation distortion (IM3) component.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116740001","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 effect of precipitation rate on the phase shift of the electromagnetic wave due to various types of snow","authors":"M. A. Fares, S. C. Fares, C. Ventrice","doi":"10.1109/SECON.2012.6196998","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196998","url":null,"abstract":"Using oblate spheroidal representation for snowflakes, the phase shift of the electromagnetic waves due to dry, moist, wet, and watery is computed. The results are obtained for two orthogonal polarizations of the incident wave in the forward-scattering direction. The computations are made for various microwave frequencies between 6 and 100 GHZ, and also for precipitation rates between 0.5 and 3 mm/hr. The effect of the precipitation rate, R, on the phase shift for all types of snow is examined. It is found that at a fixed R, the phase shift of both polarizations for each type of snow increases with increasing frequency up to a value, Fmax, beyond which the phase shift decreases with increasing frequency. The value of Fmax is different for each type of snow and it increases with increasing wetness of snow. In addition, it is observed that the values of phase shift of wet and watery snow are very close. It is also observed that at a fixed frequency, greater than Fmax, the phase shift for both polarizations decreases with increasing R for each type of snow. In addition, it is found that the phase shift of both polarizations of snow decreases with snow wetness for fixed precipitation rate and frequency. The differential phase shift of all types of snow is also observed to follow the same trend as the phase shift over the same frequency range and precipitation rates.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121692393","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":"High definition licence plate detection algorithm","authors":"Z. Jeffrey, S. Ramalingam","doi":"10.1109/SECON.2012.6196912","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196912","url":null,"abstract":"This paper describes a background noise elimination technique introduced for License Plate (LP) detection algorithms specifically designed for High Definition (HD) images to deal with the surplus data they contain. The images are firstly enhanced using a robust method, followed by the application of morphological operators and histogram percentile autonomous thresholding for removing background noises keeping the resulting image grey. Finally, greyscale edge detection based segmentation is applied to extract the candidate regions of interest. Experiments on thousands of images show an improvement not only in LP detection in HD images, but also in edges processing time, which compensates for the additional time due to background noise elimination. The proposed algorithm is also tested on Standard Definition (SD) images where higher LP detection success is observed on SD images with complex background scenes.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"148 Pt 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126317682","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":"Cyber-physical operation security with a collaborative knowledge grid system","authors":"A. Das, R. Reddy, Luyi Wang, S. Reddy","doi":"10.1109/SECON.2012.6196939","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196939","url":null,"abstract":"A cyber-physical system is treated with a collaborative self-organizing knowledge network model, called Vijjana. While traditional communication between users of Vijjana forms a loosely coupled system, in cyber-physical system it is tightly-bound forming a policy-driven knowledge grid. If there is a compromised security in a cyber-physical system, the knowledge grid bootstraps to a subset grid, isolated from other nodes. A model for this bootstrap is proposed, which looks for carefully administered security policies in the cyber-physical system.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130378042","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 manual approach and analysis of Voltage and Frequency Scaling using SCC","authors":"K. Berry, F. Navarro, Chen Liu","doi":"10.1109/SECON.2012.6197073","DOIUrl":"https://doi.org/10.1109/SECON.2012.6197073","url":null,"abstract":"The current trend of Dynamic Voltage and Frequency Scaling (DVFS) techniques involve algorithms that predict when a processor is in a period of accessing off chip memory and dial down its voltage/frequency during this phase in order to reduce energy consumption with minimal, if any, effect on execution time. These algorithms often operate with a parameter that defines the tolerable performance degradation, because the various operating frequencies that a processor can be set to are often limited. This limit makes it practically impossible to dial down a processor's frequency to the exact optimal frequency that will provide maximal energy efficiency but not affect performance. This leads to a need for these algorithms to include the previously stated parameter to identify cases where choices which degrade performance to an unacceptable level and/or without providing a benefit in energy consumption are avoided. However, the overhead costs incurred by the process of voltage and frequency scaling must also be taken into consideration. We propose a study to determine the impact of these overhead costs on the overall benefit of dynamic voltage and frequency scaling.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134056467","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":"Modeling for survivability of Smart Power Grid when subject to severe emergencies and vulnerability","authors":"P. Chopade, M. Bikdash","doi":"10.1109/SECON.2012.6196924","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196924","url":null,"abstract":"We discuss a model for survivability of Smart Power Grid under severe emergencies and vulnerability. We focus on the smart electric power delivery systems, i.e., electricity transmission and distribution smart grids, along with SCADA and EMS systems. We introduce concepts and results from graph and social network theories, and apply them to the study of the IEEE 118 Bus system. We discuss concept of self-healing grid and intelligent adaptive islanding for IEEE 118 bus system and WSCC-Smart Power Grid Network-SCADA-EMS (WSSE) System. We also calculate values of the topological characteristics of the networks and compare their error and attack tolerances, i.e., their performance when vertices are removed, randomly or in a malicious way. Also, we study survivability of IEEE 118 bus considering network islanding scheme under random and targeted attacks. The IEEE 118 network islanding scheme was found to be more survivable under different attacks.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134224528","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":"Algorithms for hiding data in speech signals","authors":"A. F. Marquez, R. Sankar, W. Moreno","doi":"10.1109/SECON.2012.6196906","DOIUrl":"https://doi.org/10.1109/SECON.2012.6196906","url":null,"abstract":"This paper presents speech watermarking techniques based on modification of the duration of estimated silence regions, direct samples replacement within silence regions, dc component changes per short-time frame, and specific modification of low-amplitude samples ranges in a speech signal. These methods could be used to secretly embed information into speech data for applications such as copyright protection, annotations, and covert communications. Natural variability of the modified parameters within a sentence makes the algorithms imperceptible to the human listener while providing enough bandwidth to hide encoded information. Performance of the schemes is evaluated by comparing them to other data watermarking approaches. Experimental results for several speech signals verify the robustness of the algorithm.","PeriodicalId":187091,"journal":{"name":"2012 Proceedings of IEEE Southeastcon","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134277613","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}