| Spin-Based Devices for Magneto-Optoelectronic Integrated Circuits |
29-Apr-2009 |
37 pages |
| Authors:
M Holub; D Saha; D Basu; P Bhattacharya; L Siddiqui; S Datta; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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 | In this project we have designed and demonstrated several fundamental spintronic devices for the first time. The elemental nature of these devices makes them very versatile and they are suitable for wide range of applications. Key results and accomplishments from this research are highlighted below. * Electrical Injection, Threshold Reduction and Output Circular Polarization Modulation in Quantum Well and Quantum Dot Semiconductor Spin Polarized Lasers working at temperatures up to ... |
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| Selectively Oxidized Patterned InP-Based Vertical Cavity Surface Emitting Lasers and VCSEL Arrays |
1999 |
155 pages |
| Authors:
Herte Gebretsadik; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| Since the development of low loss optical fibers over 25 years ago, optical communications has become the system of choice for worldwide communication networks. Some of the many advantages over previous systems include: large transmission bandwidth, immunity to electromagnetic interference, low transmission loss, low weight, low power consumption, and relatively low cost. As multimedia services including the internet, cable television, high definition television (HDTV), and computer links become indispensable in ... |
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| A Quantitative Approach to Nonlinear IC Process Design Rule Scaling |
1999 |
153 pages |
| Authors:
Spencer Montgomery Gold; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| This thesis introduces a methodology for determining scaled horizontal process design rule values that reach an effective tradeoff between not only cost and area, but performance. This is accomplished with a procedure that interactively finds the design rules that have the greatest impact on minimum layout area, and reduces them to their points of diminishing return from a cost, area, and performance perspective. The primary internment for performing this analysis ... |
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| A Microarchitecutre for Resource-Limited Superscalar Microprocessors |
1999 |
177 pages |
| Authors:
Todd David Basso; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| Microelectronic components in space and satellite systems must be resistant to total dose radiation, single-event upset, and latchup in order to accomplish their missions. The demand for inexpensive, high-volume, radiation hardened (rad-hard) integrated circuits (ICs) is expected to increase dramatically as the communication market continues to expand. Motorola's Complementary Gallium Arsenide (CGaAs(TM)) technology offers superior radiation tolerance compared to traditional CMOS processes, while being more economical than dedicated rad-hard CMOS ... |
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| A Design Methodology for Addressing Crosstalk in Integrated Circuits |
1998 |
148 pages |
| Authors:
Phiroze N. Parakh; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| This dissertation focuses on a design methodology for addressing capacitive crosstalk. Crosstalk is a severe problem in the field of VLSI design where aggressive scaling of interconnect pitch has led to increased capacitance between adjacent traces, causing non-linear interactions evidenced as timing violations and erroneous circuit activity. New process technologies will achieve tighter metallization, increased clock frequencies, smaller voltage swings and longer interconnect. Estimates show these trends will double the ... |
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| A Study of Impact Ionization and Breakdown Phenomena in SiGe Devices |
03 SEP 97 |
22 pages |
| Authors:
P. Bhattacharya; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The spectral response and impact ionization coefficient ration of Si(1-x)Ge(x) have been determined. Measurements were made on p+-i-n+ diodes grown by solid/gas source molecular beam epitaxy. The diodes are characterized by reverse breakdown voltages of 4-12V and dark currents of 20-170pA/micrometers 2. The long wavelength cut-off of the diodes increases from 1.2 micrometers to 1.6 micrometers as x increases from 0.08 to 1.0 with a maximum responsivity of 0.5 A/W ... |
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| A Wide-Band Monolithic Quasi-Optical Power Meter for Millimeter-Wave and Submillimeter-Wave Applications. |
AUG 1991 |
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| Authors:
C. C. Ling; G. M. Rebeiz; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| Software Reliability Estimation under Conditions of Incomplete Information. |
OCT 1979 |
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| Authors:
C. K. Rushforth; F. L. Staffanson; A. E. Crawford; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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 | This report describes a computer program for the estimation of the reliability of large software packages. A model is developed which incorporates additional features found in realistic testing environments. The model is analyzed for deterministic data. Performance on simulated random test data is presented. The algorithm estimates the parameters of the model from software error data, and computes therefrom running estimates of the mean-time-to-failure and the number of software errors ... |
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| PASM: A Partitionable Multimicrocomputer SIMD/MIMD System for Image Processing and Pattern Recognition. |
AUG 1979 |
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| Authors:
Howard Jay Siegel ; Leah J. Siegel ; Frederick Kemmerer ; Philip T. Mueller Jr.; Harold E. Smalley Jr; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| PASM, a Large-scale multimicroprocessor system being designed at Purdue University for image processing and pattern recognition, is described. This system can be dynamically reconfigured to operate as one or more independent SIMD and/or MIMD machines. PASM consists of a Parallel Computation Unit, which contains N processors, N memories, and an interconnection network; Q Micro Controllers, each of which controls N/Q processors; N/Q parallel secondary storage devices; a distributed Memory Management ... |
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| Data Reduction and Analysis Programs for the Honeywell 635 TSS (Release 8.1). |
DEC 1975 |
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| Authors:
Jamshed D. Mulla; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| Four computer programs used to reduce and analyze data collected on the Honeywell 635 Time Sharing System are described. The purpose of the work was to obtain statistical data on the various Time Sharing System processes. Data items are classified into four major groups: Basic TSS Information, Individual Subsystem Data, Data from User Status Tables, TSS Memory Map. (Author) |
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| Prospects for Automatic Verification of Programs. |
FEB 1974 |
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| Authors:
Erik P. Jensen; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The program verification problem is discussed and several implementations of methods for proving computer programs correct with respect to their specifications are reviewed. The practical limitations of such implementations are presented, and the prospects for automatic verification of a useful class of program specification pairs are discussed. (Author) |
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| Feasibility of Executing MIMS on Interdata 80. |
OCT 1973 |
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| Authors:
Michael F. Bauer; Keki B. Irani; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| *Information processing, *Minicomputers, Computer programming, FORTRAN, Algorithms, Medical services, Feasibility studiesInterdata 80 minicomputers, CDC 6500 computers, CDC 6600 computers, MIMS(Medical Information Management System), Medical information management system, File structures, Computer storage managementThe report examines the feasibility of implementing large information management system on mini-computers. The Medical Information Management System and the Interdata 80 mini-computer were selected as being representative systems. The FORTRAN programs currently being used in MIMS are viewed ... |
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| Addendum to Sparse Matrix Compiler Manual, |
06 OCT 1972 |
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| Authors:
D. A. Calahan; M. S. Schlansker; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The original report AD-732 921 described programs to generate machine code for the solution of simultaneous linear equations (SLE) with sparse, unsymmetric coefficient matrices. The addendum describes extensions of the algorithm to generate interpretable lists rather than machine code, as described in the introduction of the previous report, and to solve SLE with sparse, symmetric coefficient matrices by code generation. (Author) |
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| Causality Structure of Engineering Systems, |
SEP 1972 |
201 pages |
| Authors:
Romano Mario De Santis; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The report is a study of the structure of engineering systems with respect to time related behavior. The development is unconventional in not being based on system properties such as linearity, time invariance, etc. The main question of interest concerns the possibility of decomposing a general system into a sum of systems with less complex time related behavior. An analysis of characteristic properties of such systems and their interconnection with ... |
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| Computer-Aided Network Design: Revised Edition, |
1972 |
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| Authors:
Donald A. Calahan; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| ;Contents: Network design by computer; Analysis of linear networks; Nonlinear DC circuit analysis; Transient analysis of dynamic networks; Sensitivity calculations; Automatic design; Tolerance analysis; Introduction to advanced techniques of equation formulation; Advanced numerical techniques in transient analysis; Sparse matrix procedures and related topics; Network optimization methods; Time-domain sensitivity calculation. |
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| Description of a Sparse Matrix Compiler with Applications, |
11 OCT 1971 |
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| Authors:
D. A. Calahan; T. E. Grapes; J. Donahey; N. Orlandea; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The report describes the operation and use of a number of computer programs that generate code for the manipulation of sparse matrices. In particular, code generators are described for the efficient repetitive solution of simultaneous linear equations which have a common sparsity structure. Applications to a variety of engineering problems are given. (Author) |
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| Formulation and Numerical Methods in the Computer Evaluation of Mechanical Dynamic Systems, |
SEP 1971 |
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| Authors:
Donald A. Calahan; Milton A. Chace; Nicolae Orlandea; Donald A. Smith; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| Use of the computer for design analysis of mechanical dynamic systems can be effectively approached through the development of type-variant programs. For background this paper reviews the architecture and experience with DAMN, a completed, successful program which performs the dynamic analysis of any two-dimensional mechanical work irrespective of degree-of-freedom, constraint and amount of displacement. Then some relatively new methods for automated formulation and numerical analysis are discussed, particularly sparse matrix ... |
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| Eigenvalue Methods for Sparse Matrices, |
SEP 1971 |
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| Authors:
D. A. Calahan; W. J. McCalla; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The problem of computing eigenvalues of sparse unsymmetric matrices is examined using a modern compiler-interpreter implementation. Methods are discussed which would, for example, extract all the eigenvalues of a 40-th order matrix in approximately one second. (Author) |
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| The Optimization of Numerical Models of Semiconductor Devices. |
NOV 1970 |
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| Authors:
L. C. McAfee Jr; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| For semiconductor devices analytic solutions to the set of describing nonlinear partial differential equations do not in general exist. Lumped electrical models and digital computer numerical models have been used to obtain approximate solutions. The research which in part is being reported was concerned with methods for systematically and efficiently finding small and accurate numerical models suitable for use in algorithms for computer-aided analysis and design of bipolar junction devices. ... |
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| AN ILL-CONDITIONING PROBLEM WITH IMPLICIT INTEGRATION, |
MAY 1970 |
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| Authors:
Donald A. Calahan; C. W. Gear; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The use of implicit integration of ODE'S TO AVOID THE SPLIT TIME CONSTANT PROBLEM HAS BEEN THOUGHT OF AS A NUMERICAL PANACEA, ESPECIALLY SINCE THE ASSOCIATED MATRIX REDUCTION PROBLEM HAS BEEN ALLEVIATED USING HIGHLY-EFFICIENT COMPUTER-GENERATED MATRIX REDUCTION ALGORITHMS. This letter points out a significant exception to this premise, demonstrated in a circuit analysis context. (Author) |
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| NUMERICAL TECHNIQUES FOR FAST AND ACCURATE TRANSIENT ANALYSIS OF NONLINEAR CIRCUITS, |
MAY 1970 |
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| Authors:
Donald A. Calahan; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The field of nonlinear circuit simulation has from the beginning been plagued by numerical problems arising from the use of numerical methods not matched to the problems which simulation programs were intended to solve. These programs have, however, provided the stimulus for research in this area by electrical engineers or by engineer-mathematician teams. The result has been an enormous increase in the efficiency and reliability of experimental simulation programs. In ... |
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| NUMERICAL CONSIDERATIONS IN THE TRANSIENT ANALYSIS AND OPTIMAL DESIGN OF NONLINEAR CIRCUITS, |
MAY 1970 |
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| Authors:
Donald A. Calahan; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| Although the formulation of equations for nonlinear electrical circuits has received a great deal of attention, it is only recently that a corresponding concern with the solution phase has been evidenced. As this interest has developed, so too has a realization of the intimate numerical relationship between the formulation and solution. This concern extends to both analysis and (automatic) iterative design, for there are numerical problems which are peculiar to ... |
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| Numerical Studies in Computer-Aided Design. |
28 JAN 1970 |
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| Authors:
D. A. Calahan; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The specific projects studied were the following: Integration methods for solution of the large systems of nonlinear ordinary differential equations that result from description of the transient behavior of digital computer switching circuits; Solution of large sparse systems of simultaneous linear equations that result from description of the quiescent (static) and transient behavior of nonlinear circuits; Effects of equation formulation on numerical solution; and, the Use of new sensitivity calculation ... |
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| VERNEUIL GROWTH EXPERIMENTS WITH MAGNESIUM OXIDE CRYSTALS. |
OCT 1969 |
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| Authors:
Harold C. Early; Frank J. Martin; Edward A. Martin; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| A plasma torch having very high gas enthalpy and low contamination was developed for growing single crystals of very refractory materials. The torch consisted of a wall-stabilized, constricted-arc, nitrogen-plasma jet using 20-50 kilowatts of d-c power. A flow of purge gas prevented the vaporized tungsten electrode material from contaminating the plasma stream. The crystal-growing experiments used a muffle of sintered magnesium oxide and a Verneuil feed system. MgO seed crystals ... |
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| SELECTED TOPICS IN AUTOMATA THEORY. |
APR 1968 |
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| Authors:
Richard M. Karp; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| Automata theory is a young mathematical discipline dealing with conceptual models of information processing devices and methods. It is the purpose of this report to give a formal development of the properties of some of these models, and to discuss their relationships to some possible areas of application. The main emphasis is given to the two most widely studied models: finite state machines and Turing machines. Other related models are ... |
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| COMPUTER-AIDED NETWORK DESIGN: PRELIMINARY EDITION, |
JAN 1968 |
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| Authors:
Donald A. Calahan; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The book describes current mathematical techniques used in analysis, optimization and modeling of electronic circuits. These topics include formulation and numerical solution of linear and nonlinear circuits, sensitivity analysis and use of function minimization techniques in circuit design. (Author) |
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| INVERSE SCATTERING INVESTIGATION. |
JUL 1967 |
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| Authors:
Vaughan H. Weston; John H. LaRue; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The problem in question consists of determining means of solving the inverse scattering problem where the transmitted field is given and the received fields are measured, and this data is used to discover the nature of the target. The problem of what information can be determined about the body if the scattering matrix (phase and amplitude) is known only over an angular sector and measured in the far field, is ... |
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| THE PHASE SYNCHRONIZATION OF A PARAMETRIC SUBHARMONIC OSCILLATOR. |
APR 1967 |
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| Authors:
James L. Cockrell; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| The general problem of phase determination for a parametric subharmonic oscillator is formulated. The analyses of several circuits are reduced to the solution of the canonical Mathieu equation. Solution is effected by the Floquet theorem and the parameters discussed in terms of the range of values encountered in experimental circuits. The transient portion of the solution produces arbitrary constants with two possible signs, yielding the two phase states of a ... |
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| INVESTIGATIONS ON EXCITATION AND PROPAGATION IN IONIZED MEDIA. |
JUN 1966 |
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| Authors:
Chiao-M. Chu; John J. LaRue; David B. vanHulsteyn; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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| A study of the excitation and propagation of wave like disturbances in an ionized medium, such as the ionosphere, is made based on the linearized Euler's equation and Maxwell's equation. The local propagation constants of the basic modes of propagation are discussed. A computer program for the evaluation of these constants with given ionospheric properties is given. Methods of investigating the propagation of such waves in inhomogeneous and/or bounded media, ... |
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| THE EVIDENCE FOR A DECISION-MAKING THEORY OF VISUAL DETECTION |
MAR 1955 |
68 pages |
| Authors:
J. A. Swets; Jr. Tanner W. P.; T. G. Birdsall; MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING
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Reports by Corporate Author
