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27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.最新文献

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Automated system for selecting optimal technological variant and design of passive elements in hybrid micro modules 混合微模块无源元件优化工艺选择与设计自动化系统
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490872
R. Yordanov, D. Iliev
{"title":"Automated system for selecting optimal technological variant and design of passive elements in hybrid micro modules","authors":"R. Yordanov, D. Iliev","doi":"10.1109/ISSE.2004.1490872","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490872","url":null,"abstract":"A program module for selection of an optimal technological variant during design of hybrid micro modules has been developed. It allows the opportunity to solve the optimization problem based on the available technology materials, elements and scheme. The selection of the combination of weight coefficients that describe the efficiency of the result and visualization of the hybrid micro modules (HMM) facilitates the attainment of an optimum technological variant during the design phase. The results are compatible with Cadence by means of exporting the script file.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127364672","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}
引用次数: 0
Computer simulation of photosensitive sensors based on polysilicon p/i and p/i/n structures 多晶硅p/i和p/i/n结构光敏传感器的计算机模拟
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490843
P. Aleksandrova
{"title":"Computer simulation of photosensitive sensors based on polysilicon p/i and p/i/n structures","authors":"P. Aleksandrova","doi":"10.1109/ISSE.2004.1490843","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490843","url":null,"abstract":"In this paper, a semiconductor device simulator PC1D is used to investigate the behavior of photosensitive polycrystalline p/i and p/i/n structures. The main physical characteristics - impurity concentrations, diffusion lengths, bulk and surface recombinations are varied in a wide range. The junction depths and thicknesses of the constituent layers are fixed. The obtained electrical characteristics for both photosensitive structures are compared. On the basis of the obtained results, photosensitive sensor optimized structures are proposed. It is shown that PC1D can be successfully applied for the simulation of polycrystalline photosensitive structures.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126106365","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}
引用次数: 0
Computer investigation of three-phase active power filter 三相有源电力滤波器的计算机研究
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490421
M. Antchev, M. Petkova
{"title":"Computer investigation of three-phase active power filter","authors":"M. Antchev, M. Petkova","doi":"10.1109/ISSE.2004.1490421","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490421","url":null,"abstract":"A connection has been found between load power, harmonic distortion factor and the necessary current value of the single-phase and three-phase shunt active power filters for correction of the power factor up to 1. The obtained relations are graphically presented. A three-phase shunt active power filter (APF) operating in combination with different types of load for the source network is studied by means of computer simulation (PSpice). Simulation results that explain filter operation, as well as the spectral characteristics of the source current of the investigated loads operating with and without the filter, are included.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"os-39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127778046","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}
引用次数: 0
Models Of Technology And Change In Higher Education & University - Industry Network 高等教育与大学-产业网络中的技术与变革模型
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490836
E. Shoikova
{"title":"Models Of Technology And Change In Higher Education & University - Industry Network","authors":"E. Shoikova","doi":"10.1109/ISSE.2004.1490836","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490836","url":null,"abstract":"","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124291998","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}
引用次数: 1
Distant learning experience in microelectronics CAD tools 有远程学习微电子CAD工具的经验
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490455
M. Hristov, R. Radonov
{"title":"Distant learning experience in microelectronics CAD tools","authors":"M. Hristov, R. Radonov","doi":"10.1109/ISSE.2004.1490455","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490455","url":null,"abstract":"This paper is dedicated to the experience in the field of distant learning of the ECAD Laboratory in the Technical University of Sofia. Four Web-based distant learning modules are described and a brief summary of their submodules is given. These Web-based modules are a \"CADENCE design software\" module in English, an interactive module \"digital IC design using SYNOPSYS\" in English, an interactive module \"digital IC design using SYNOPSYS\" in Bulgarian and an \"analog IC design\" module. The methods and core skills that should be trained in Web-based courses are defined in the paper. The concept of the realization of Web-based training courses is explained. These modules were developed in the framework of the European Project IST-2000-30193 REASON (research and training actions for system on chip design).","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123225928","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}
引用次数: 0
Extended differential long-term predictive universal coding 扩展差分长期预测通用编码
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490860
E. Saramov
{"title":"Extended differential long-term predictive universal coding","authors":"E. Saramov","doi":"10.1109/ISSE.2004.1490860","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490860","url":null,"abstract":"In this paper, we propose an extended differential pulse code modulation (DPCM) method for sources with unknown parameters (of any theoretical class). The main features of the method are long-term prediction and backward adaptation by forward analysis with a dynamically adjustable prediction precision criterion. The predictors of the encoder and the decoder are synchronized by commands via a logical pipe. The proposed structures can be implemented thoroughly in hardware.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124742121","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}
引用次数: 0
Solving timetabling problems using genetic algorithms 利用遗传算法解决排课问题
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490384
MlLENA Karova
{"title":"Solving timetabling problems using genetic algorithms","authors":"MlLENA Karova","doi":"10.1109/ISSE.2004.1490384","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490384","url":null,"abstract":"The paper describes techniques that can be applied to a different scheduling and timetabling problems. The problems are characterized as constraints satisfaction problems. The solution methodology uses genetic algorithms to minimize the total penalty for constraint violation. Encoding, genetic operators and fitness evaluation are implemented. To solve this problem, a genetic algorithm maintains a population of chromosomes, each of which represents a possible solution (timetable). In every generation, a new population of chromosomes is created using bits and pieces of the fittest of the old generation. The main tasks of applying a genetic algorithm to solve a problem are: encoding the solution as chromosomes; developing a fitness evaluation function; choosing genetic operators and run parameters. The genetic algorithm includes the following functions: initialize, evaluate, select, crossover, mutate, create new population. Our genetic algorithm proposes a solution which consists of a number of tuples, one for each class. The timetabling constraints are classified: unary constraints, binary constraints; k-nary constraints. The fitness function is a linear combination of a cost function and a penalty function. The goal is that all constraints be satisfied. We use a constraint propagation approach. There are experimental results.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115019623","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}
引用次数: 21
Measurement technique for the extraction of differential S-parameters from single-ended S-parameters 从单端s参数提取差分s参数的测量技术
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490442
K. Vaz, M. Caggiano
{"title":"Measurement technique for the extraction of differential S-parameters from single-ended S-parameters","authors":"K. Vaz, M. Caggiano","doi":"10.1109/ISSE.2004.1490442","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490442","url":null,"abstract":"With the increasing implementation of communication devices and systems in the RF/low microwave ranges, along with the usage of differential signaling schemes, it has become necessary to develop practical methods to suitably characterize the operation of these devices. This paper describes a method of determining the four-port differential S-parameters of such networks with the use of two-port vector network analyzer (VNA) by the use of various terminating load combinations. With the aid of a general equation the single-ended S-parameters obtained using this technique can be readily manipulated to obtain the differential S-parameters. The device under test (DUT) chosen to validate this technique is a pair of coupled microstrip lines designed to each have an uncoupled characteristic impedance of 55 /spl Omega/ and a differential impedance of 110 /spl Omega/ at 1 GHz.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130648966","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}
引用次数: 14
Design of CMOS core for practical examination of DC references [educational aid] 直流参考文献实考CMOS核心设计[教辅材料]
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490445
C. Mihailova, E. Manolov, M. Hristov
{"title":"Design of CMOS core for practical examination of DC references [educational aid]","authors":"C. Mihailova, E. Manolov, M. Hristov","doi":"10.1109/ISSE.2004.1490445","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490445","url":null,"abstract":"The objective of this paper is to present a CMOS core, for educational purposes, which has been developed with two goals in mind. The first is to demonstrate and learn the basic theory of analog integrated DC circuits. The second goal is to use a practical approach, which gives possibilities for configuration of many circuits so that the students can actively participate in the process of education. For that purpose, the architectures of widely used analog circuits are analyzed. On this basis, the analog DC core is implemented. This is the way to acquire more experience and new knowledge, by comparing the simulated with measurement results. The core is to be used in bachelor's and master's degree programs, which include analog integrated circuit design, microelectronics and computer-aided design (CAD) courses. The core is designed using modern and low cost 0.35 /spl mu/m CMOS Si technology.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131133787","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}
引用次数: 1
Influence of information technology on military radar systems 信息技术对军用雷达系统的影响
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004. Pub Date : 2004-05-13 DOI: 10.1109/ISSE.2004.1490878
P.M. Jeliazov, M.P. Jeliazov, M. Marinov
{"title":"Influence of information technology on military radar systems","authors":"P.M. Jeliazov, M.P. Jeliazov, M. Marinov","doi":"10.1109/ISSE.2004.1490878","DOIUrl":"https://doi.org/10.1109/ISSE.2004.1490878","url":null,"abstract":"The paper discusses influence of information technology (IT) on military radar systems and how this impacts upon conducting military operations. Applications of new technologies in three basic areas of military radar systems are considered: surveillance and automatic target recognition systems; tracking systems and data and signal processing. Some possible uses of radar data are shown along with how this will improve the efficacy of planning, coordinating, directing and controlling of military actions.","PeriodicalId":342004,"journal":{"name":"27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129450276","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}
引用次数: 0
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