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IEEE Topical Meeting on Electrical Performance of Electronic Packaging (EPEPS)

作者： Jae-Kyung Wee Yong-Ju Kim Han-Sub Yoon Seongsoo Lee Gyu Moon Division of Information and Computer Science Hallym University South Korea Application Production Team Memory Research and Development Hynix Inc. South Korea Department of Electronics Engineering Hanyang University Seoul South Korea Department of Information Electronics Engineering Ewha Womans University Seoul South Korea

ISBN: (纸本)0780374517

This paper proposes a modified technique for extracting electrical parameters of transmission lines on printed circuit boards (PCBs). This approach results in the generation of a hybrid measurement technique that is used in conjunction with TDR (time domain reflectometry) measurement in the time domain, S-parameter measurement in the frequency domain, and empirical design data, to obtain realistic consideration points for future PCB design. While the conventional methods cover parameter extraction of a single line, this proposed method can be extended to that of multi-coupled lines.

关键词： Printed circuits Integrated circuit interconnections Transmission line measurements Frequency measurement Time measurement Data mining Distributed parameter circuits Hybrid power systems Measurement techniques Reflectometry

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Measurement and modeling of two tone transfer characteristics of high power amplifiers

Measurement and modeling of two tone transfer characteristic...

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2000 30th European Microwave Conference, EuMC 2000

作者： Yang, Youngoo Yi, Jaehyok Kim, Bumman Kim, Youngsik Park, Myungkyu Department of Electronic and Electrical Engineering Microwave Application Research Center Pohang University of Science and Technology San 31 Hyoja-Dong Kyungbuk Namku Pohang 790-784 Korea Republic of School of Computer Science and Electronic Engineering Handong University Korea Republic of LG Information and Communication Korea Republic of

The high power amplifier with class AB operation has a large memory effect and high non-linearity. The usual AM-AM and AM-PM data cannot properly describe the large distortion characteristics. We present an accurate block model of the amplifier based on the two tone transfer characteristics. The measurement setup of the two tone transfer characteristics are described. The measured and modeled amplitude and phase data of the two tone harmonics versus input power level are presented. This behavioral model will be very useful for the design of a predistortion linearizer of high power amplifiers and for the nonlinear system simulation with a large memory effect. © 2000 IEEE.

关键词： Power amplifiers

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Measurement and Modeling of Two Tone Transfer Characteristics of High Power Amplifiers

Measurement and Modeling of Two Tone Transfer Characteristic...

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European Conference on Microwave

作者： Youngoo Yang Jaehyok Yi Bumman Kim Youngsik Kim Myungkyu Park Department of Electronic and Electrical Engineering and Microwave Application Research Center Pohang University of Science and Technology Pohang Gyeongbuk South Korea School of Computer Science and Electronic Engineering Handong University South Korea

关键词： Power measurement High power amplifiers Distortion measurement Power system modeling Power amplifiers Power generation Frequency Phase measurement Radiofrequency amplifiers Gain

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Digital controlled adaptive feedforward amplifier for IMT-2000 band

Digital controlled adaptive feedforward amplifier for IMT-20...

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Microwave, MTT-S International Symposium

作者： Youngoo Yang Youngsik Kim Jeahyok Yi Joongjin Nam Bumman Kim Wonwoo Kang Shinwook Kim Department of Electronic and Electrical Engineering Microwave Application Research Center Pohang University of Science and Technology Pohang South Korea School of Computer Science Handong University South Korea LG Information and Communication Limited South Korea

ISBN: (纸本)078035687X

We present a broadband adaptive control method for IMT-2000 band multi-carrier power amplifiers adopting feedforward linearization. We have analyzed and implemented an error cancellation detection method employing a frequency hopping pilot and IF synchronous sampling correlator with DSP controller. An adaptive delta-modulated power gradient algorithm is used to adjust the signal and error cancellation loop control parameters. A 2.15 GHz feedforward power amplifier with digital controller is implemented. Band test results show that it covers over a 90 MHz band with more than 50 dBc of IMD at 5 MHz offset frequency for an 8.3 MHz WCDMA signal. The adaptation result shows very fast convergence.

关键词： Digital control Programmable control Adaptive control Broadband amplifiers Power amplifiers Error correction Frequency Sampling methods Correlators Digital signal processing

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Definition of evaluation criteria for system development acquisition modeling and simulation

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NAVAL ENGINEERS JOURNAL 1999年第1期111卷 55-64页

作者： Leite, MJ Mensh, DR Michael J. Leite:is a Principal Engineer with PRC Inc. a division of Litton Industries. He supports combat system engineering for theater air and missile defense. His other tasks have included the command and control for the AEGIS shipbuilding program systems engineering for the 21st Century Surface Combatant combat system survivability and the development of NATO standardization agreements for naval ordnance. He was previously a Senior Engineer with San Diego Gas & Electric with responsibility for its energy application and lighting programs. Prior to joining SDG&E Mr. Leite was a commissioned officer in the U.S. Navy where he served in operations and engineering assignments. Following active duty he accepted a Naval Reserve commission and has retired with the rank of Captain. His assignments included command operational and engineering tours. Mr. Leite has also served as an expert witness in admiralty and engineering matters. He is a gradate of the University of California Berkeley with a Bachelor of Science Degree in Engineering and also holds a Masters Degree in Business Administration from National University in San Diego. Mr. Leite is a Registered Professional Engineer in the States of California and Minnesota. Mr. Leite is a member of ASNE ASCE MORS the Illuminating Engineering Society and the U.S. Naval institute. Dennis Roy Mensh:is a Senior Engineer with PRC Inc. a division of Litton Industries in Crystal City VA where he supports modeling and simulation tasking for combat systems. He received BS and MS degrees in applied Physics from Lopola College in Baltimore MD and the American University in Washington DC. He has also completed the course work towards a Ph.D. degree in computer science specializing in the fields of Operations Reseurch Anabsis Systems Analysis and Computer Modeling and Simulation. Previously he was employed at the White Oak Laboratory of the Naval Surface Warfare Carter in Silver Spring MD where he worked in the areas of naval sensor and weapon system analysis

This paper defines, develops and examines a set of generic analysis tools that can be applied to Models and Simulations at the Systems engineering level of fidelity. The tools examine the performance and effectiveness of Sensors;Weapons;and Battle Management, Command, Control, Communications, computers, and Intelligence ((BMCI)-I-4) systems and equipment. The Measures of Performance (MOPs), Measures of Effectiveness (MOEs) and Measures of Force Effectiveness (MOFEs) were extracted from the Modular Command and Control Structure Paradigm which was developed at the Naval Postgraduate School. The paradigm provides for the development of evaluation criteria (MOPs, MOEs, and MOFEs) in a framework that ensures the traceability of system performance and effectiveness to the system operational requirements as specified in the Operational Requirements Document (ORD). Also, the analysis tools provide insight and valid estimates of numerical measures of the defined system functionality threads, which represent the system's operational requirements as specified in the ORD. The tools are directly transferrable and applicable to test and evaluation exercise events which are conducted in support of the development and acquisition of systems and equipment. Once the levels of system performance have been defined, the Paradigm generates a quantitative database that becomes a useful tool in system tradeoffs and selection. Once the alternative system suites have been defined, the suites can be analyzed in terms of system functionality threads and their corresponding performance capabilities versus cost.

关键词： Naval vessels

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Applying fuzzy functions and sequential coordination to optimization of machinery arrangement and pipe routing

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NAVAL ENGINEERS JOURNAL 1998年第6期110卷 43-54页

作者： Wu, BC Young, GS Schmidt, W Choppella, K Dr. Bi-Chu Wu:received a PhD in Mechanical Engineering from the University of Maryland College Park in 1991. She has worked on projects involving naval architecture design optimization solid mechanics and database development. Presently a senwr engineer with Angle Incorporated Dr Wu's research interests are in design optimization and fuzzy logic applications. Dr. Gin-Shu Young: a senior engineer with Angle Incorporated holds a PhD in Mechanical Engineering from the University of Maryland College Park. As a guest researcher with National Institute of Standards and Technologies from 1990 to 1993 he worked on vision-based navigation for autonomous vehicles. His experience also includes applications of optimization fuzzy logic neural network and genetic algorithm methods to engineering system design Mr. William Schmidt:co-founded Angle Incorporated in 1990 and has served as Vice PresidentlChiefScientist during this tame. He holds a B.Sc. in Applied Science from the Naval Acadt?my and an M.Sc. in Physics from the Naval Post Graduate School. He has cner 20 years experience in technical leadership material and personnel management. He has led the application of computer aided design (CAD) and Product Model Information Exchange to the shipbuilding industry. His experience also includes leading the amlication of model based operational analysis to support the Live Fire Test Program for DDG 51 Class Destroyers. Mr. Krishna M. Choppella:is a Sofware Engineer at Eidea Laboratories Incotporated where he works on componentbased distributed enterpvise frameworks. He has been involved in creating data analysis tools for the US Nay by integrating CAD modeis databases and graphical front ends. His work in the Masters degree program in Mechanical Engineering at the University of Texas at Austin was in di0ddase.r spectroscopy of combustion products in porous-matri burners. He received his Bachelors degree in Electrical Engineering in India. He was a Research Associate at the Centre for Laser Technology and Project Engi

Ship design is often multidisciplinary involving several design elements with various types of objectives and constraints (O/C) some easily described as mathematical formulas, others better modeled as descriptive assertions. This paper describes a method based on fuzzy functions and an integrated performance index to model O/C using descriptive assertions to be used with mathematical formulas in optimization. Another issue addressed in this paper concerns the coordination of design elements when sequentially coupled, that is, when one leads the other and the performance of the follower depends greatly on the design of the leader. Based on neuro-fuzzy techniques, the method described here coordinates and optimizes sequentially coupled elements. The two methods are applied to machinery arrangement (MA) and pipe routing (PR). Preliminary models for optimization of MA and PR are described considering convenience, producibility: engine room size, interference and location as factors in the O/C set. Some test results from MA/PR applications are presented and discussed. The methods are generic and can be extended to other elements in ship design. They are mutually independent and may be used separately Two advantages of their use are an improvement in overall performance and a reduction in the need for redesign of elements.

关键词： Optimization

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Meeting the 21st century with SMART mission flexibility

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 341-346页

作者： Alexander, RK Olmstead, L Ronald K. Alexander P.E.:received his B.S. degree in mechnaical engineering from Purdue University and his M.S. degree in mechanical engineering from the Naval Postgraduate School. He is currently manager quality programs at RGE Engineering Service Company where he provides technical support to the ATC Program in the area of combat system modularity design. lhe is a member of ASNE and the Surface Navy Association. Larry Olmstead:received his B.L.S. degree in mathematics and computer scienc from Mary Washington College in 1982 and his M.S. degree in system management from the University of Southern California in 1986. He chaired the C'I Modular Implementation Wroking Group (MIWG) from its inception in September 1993 to December 1996 as a combat system engineer in the PEO CLA Engineering management Office (Code PMS307). He is currently employed at Science Application International Corporation.

A revolution is underway in the design, production and installation of the Navy/Marine Corps team's command, control, communications, computers and intelligence ((CI)-I-4) vision and strategies, which is significantly reducing costs, and dramatically improving the battle readiness of tomorrow's forward deployers. A strong emphasis on research and development has enabled the design, development and installation of the Shipboard Modular Arrangement Reconfiguration Technology (SMART) systems in ships. SMART is a methodology for installing equipment in shipboard spaces that will provide the fleet with enhanced mission flexibility. The heart of this technology is a track rail system, similar to that used by the aircraft industry, which enables equipment to be bolted to the deck, bulkheads or overhead, and meets all shipboard shock and vibration requirements. The fleet can reconfigure designated spaces to receive new systems, install equipment upgrades, position cross-decked systems, or rearrange work areas with minimal industrial work (welding, grinding, lagging, painting, etc.), and maximum cost savings. Key (CI)-I-4 spaces such as Tactical Flag Command Center (TFCC), Joint Operations Center (JOC), Communication Centers, etc., can be reconfigured as required. Thereby, new technology insertion can enable rapid deployment of state-of-the-art technologies much faster than the standard method of welding foundations in place to support various equipment installations. The SMART system includes a foundation track system, modular-connectorized power and lighting, and modular workstations.

关键词： Naval vessels

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Influence of human engineering on manning levels and human performance on ships

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NAVAL ENGINEERS JOURNAL 1997年第5期109卷 67-76页

作者： Anderson, DE Oberman, FR Malone, TB Baker, CC David E. Anderson:has a bachelor of science degree in environmental engineering from Florida Technological University and a master's degree in environmental engineering from the University of Central Florida. He is a graduate of the Naval Sea Systems Command's Engineer-In-Training (EIT) Program. Mr. Anderson was instrumental in introducing the collective protection system (CPS) in the U.S. Navy developing the initial forward-fit package for the USS Gunston Hall and the engineering change proposal (ECP) for the USS Wasp. In 1990 he joined the Human Systems Integration (HSI) Division (SEA 55W5) where he was task leader for auxiliary ships. He is currently the HSI manager for the future technology variant of the SeaLift ship and the future carrier. Association of Scientists and Engineers 33rdAnnual Technical Symposium 26 April 1996. Fred R. Oberman:has B.A. and M.A. degrees from the University of Chicago and Loyola University (experimental psychology) and an M.S. degree in industrial engineering and operations research from Virginia Polytechnic Institute (VPI). He has more than 30 years experience in HSI management planning research analysis design and testing in government and private sector positions. He is currently responsible for NavSea HSI generic research and tool development efforts. He is responsible for Human Engineering Specifications and Standards (Commercial Hypertext) and is the NavSea 03D7 representative on HSI in Performance Specifications and for integration of HSI within Integrated Logistic Support (ILS). He has served as DoD HSI SubTAG chair and member of the Simulation and Modeling Test and Evaluation Display and Control Systems Human Computer Interaction Specifications and Standards and Systems Design Sub Tags as a member of the Society of Naval Architects and Marine Engineers (SNAME) Systems Safety Panel and a member of NATO RSG 14 on man-machine analysis. Thomas B. Malone: CHFEP received a Ph.D. in experimental psychology from Fordham University in 1964. He is president of Carlow

The objectives of Human engineering (HE) are generally viewed as increasing human performance, reducing human error, enhancing personnel and equipment safety, and reducing training and related personnel costs. There are other benefits that are thoroughly consistent with the direction of the Navy of the future, chief among these is reduction of required numbers of personnel to operate and maintain Navy ships. The Naval Research Advisory Committee (NRAC) report on Man-Machine Technology in the Navy estimated that one of the benefits from increased application of man-machine technology to Navy ship design is personnel reduction as well as improving system availability, effectiveness, and safety The objective of this paper is to discuss aspects of the human engineering design of ships and systems that affect manning requirements, and impact human-performance and safety The paper will also discuss how the application of human engineering leads to improved performance, and crew safety, and reduced workload, all of which influence manning levels. Finally, the paper presents a discussion of tools and case studies of good human engineering design practices which reduce manning.

关键词： Human engineering

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Neural network for invariant image classification

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JOURNAL OF THE INSTITUTION OF ELECTRONICS AND TELECOMMUNICATION ENGINEERS 1996年第4-5期42卷 281-290页

作者： Patra, PK [a] Computer Science & Application Department College of Engineering & Technology Orissa University of Agriculture & Technology Bhubaneshwar 751 003 India.

In this paper, a Neural Network (NN) based approach for classification of images represented by translation, scale and rotation-invariant features is presented, The utilized network is a multi-layer perception (MLP) classifier with one hidden layer, The back-propagation learning is used for its training. The translation and scale invariant feautres are obtained by Fourier-Modified Direct Mellin Transform (F-MDMT), The rotation invariances are obtained by Zernike moments. Zernike moments are the mapping of the image onto a set of complex orthogonal polynomials, The performance of the MLP classifier is compared to three other traditional statistical classifiers, namely: Bayes, nearest-neighbour and minimum-mean-distance. Through extensive experiments with noiseless as well as noisy binary images of all Oriya characters (49 classes) and comparing these with usual geometrical invariants, it Is reported that the neural net-work (MLP) has got a high degree of performance as a classifier.

关键词： Fourier-Modified Direct Mellin Transforms Zernike moment multi-layer perceptron Oriya characters invariant features

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A hierarchical representation for the reference database of on-line Chinese character recognition 6th

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6th International Workshop on Structural and Syntactical Pattern Recognition, SSPR 1996

作者： Chen, Ju-Wei Lee, Suh-Yin Institute of Computer Science and Information Engineering National Chiao Tung University Hsinchu30050 Taiwan Application Software Department Computer and Communication Research Laboratories Industrial Technology Research Institute Chutung Hsinchu31015 Taiwan

ISBN: (纸本)3540615776

On-line handwritten Chinese characters recognition (OLCCR) is the key technology for Chinese pen-based systems. Handwriting may vary in stroke shapes, character configuration, stroke order, and the number of strokes. These variations make machine recognition difficult. There are multitudinous categories and complicated structures in Chinese characters. Therefore, for an OLCCR system, efficient storage techniques of the reference database are important especially for those portable computers with very limited computing resources. Basically, simple Chinese characters are constructed by basic strokes according to fixed structural rules, and complicated characters are composed of radicals or components based on fixed geometric configurations. In this paper, we propose a hierarchical representation for the reference database of an OLCCR system using a structural recognition method, in which both stroke-number and stroke-order variations can be tolerated in the recognition system. The major structural knowledge used in recognition includes stroke correspondence rules, spatial relationships between strokes, and character patterns. We utilize components and character structures to represent characters. Only the structural knowledge of components are stored, and the structural knowledge of each character can be retrieved based on its constituent components and its character structure. Both the representation method and the retrieving method of the structural knowledge are proposed in the paper. The storage requirement of the reference database is reduced to 1/4 of the amount without using hierarchical representation. © Springer-Verlag Berlin Heidelberg 1996.

关键词： Microcomputers

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