Electrical and Electronics Commons^™

Gallium Arsenide Standard Cell Cad Database For Digital Design, Nanchou Liu

Theses

This thesis develops a selected design database of gallium arsenide logic cells for automated design. Uniformly applied 1 um gate length physical layout rules are used for the design database with a standard cell design methodology.

Schottky Diode FET Logic (SDFL) technology with double level metallization was selected following a consideration of alternative gallium arsenide MESFET logic types. The SDFL approach is judged to provide improved noise margin, production yield, density, and lower power dissipation.

A cell library with 60 um cell height has been implemented with double entry for each cell input/output. Each cel1 has been simulated with SPICE …

Development Of 8052ah-Basic Based Single Board Computer Ii, Suping Lou

Theses

8052AH-BAISC Based Single Board Computer II ( SBC II ) is designed and developed for the application in biomedical instruments as an embedded central processing unit. SBC II offers powerful function in digital signal acquisition, storage and processing, smart on-board EPROM programming, various preipheries supporting and custom supervisor program. The techniques of design and development of SBC II includes computer aided circuits analysis and schematic, optimal design algorithms and computerized setting up SBC II prototype.

This thesis combines the analysis of SBC II circuitry, set up and operation of the complete computer aided electrical circuit design software OrCAD/SDT specifics in …

Asics Application On Voice Processing Interface Design- Qegg Multiplier, Gwo-Jen Luar

Theses

Application Specific Integrated Circuits (ASIC) is a high density VLSI design that including the lower cost, higher performance, small size, and increased reliability. The ASIC, XILINX's LCA is applied on the signal processing ahead of computer I/O interface, specially for the quantitative Electroglottograph. This thesis covers the logic design, simulation test, realization, and stand alone test.

High Frequency Gaussian Beams Solution Of A Plane Wave Coupling Into Cylindrical Cavity, Christine Issa Mourad

Theses

Propagation of high frequency fields as a superposition of Gaussian beams instead of geometrical ray fields has potential advantages in complicated environments because the beams do not fail in ray optic transition regions. While the Gaussian beam method can be made rigorous through self consistent stacking of displaced and tilted beams on a Gabor phase space lattice, with retention of full beam spectra, computation is facilitated when the propagation domain is covered with paraxially approximated nontilted beams. The spectral deficiencies introduced by this simplified propagation model depend on the propagation environment. They are examined here for a plane wave coupling …

A Dynamic Set-Based Multiaccess Protocol For Local Area Networks, Parul S. Nanavati

Theses

The packet-broadcasting technique brings together the advantages of both packet switching and broadcast communication. The central problem of a packet broadcast network is conflict resolution among the users sharing the broadcast communication link. Collisions are the major source of transmission errors which degrade the performance of a LAN. Proposed here is a novel multiaccess protocol which offers full communication resources to the user at low traffic requirements. It dynamically adjusts the number of users allowed to access the medium at heavy traffic requirements such that number of collisions are reduced and thus maintains the efficient utilization of the medium and …

Reliability Problems In Semiconductor Lasers, Ajay R. Patel

Theses

The stability and reliability of semiconductor laser is dependent on its design, fabrication, and output power. The best way to assure high reliability of these devices is by accelerated aging test and by selection of strict and meaningful criteria for the acceptance or rejection of a particular device. In this thesis emphasis is given on different failure mechanisms that are known. As new development takes place, other mechanisms may be found. Catastrophic degradation, gradual degradation, darkline defects, and contamination during the fabrication process are the main source of device failure.

The noise generation and the packaging issue of semiconductor laser …

Design Criteria Of Coherent Optical Fiber Communication System, Rajesh N. Patel

Theses

Design criteria of coherent optical fiber communication system were discussed and investigated. First, the different types of optical fibers (waveguides) were discussed. Then the laser sources, photo-detectors, transmitter & receiver circuits were discussed in detail.

Design criteria of conventional intensity modulated (direct detection) optical fiber communication system were discussed. Then, the design criteria and estimation of number of photons for different modulation schemes for coherent optical fiber communication system were analyzed.

Coherent optical fiber communication system's advantages and drawbacks were discussed in detail. Improvement in receiver sensitivity of coherent detection compare with conventional direct detection was investigated. Finally, some receiver …

Reliability Evaluation Of Liquid Crystal Displays Under Accelerated Test Conditions, Ishatdev Singh Rathore

Theses

This thesis deals with the recent study of reliability of liquid crystal displays. This study determined the effects of high temperature on LCD reliability. To accomplish this, reliability life testing was done on different kinds of LCD samples under different operating conditions. The tests were carried out on the samples of two different vendors at two different temperatures. No humidity was added in any test.

Vendor No. 1

1. 120 units at 77° ± l° C.

2. 80 units at 85° ± 1° C.

Vendor No. 2

1. 60 hard and 60 soft glass units at 77° ± 1°C.

2. …

Design And Development Of An Infrared Ccd Camera, John Frederick Romanowich

Theses

An infrared CCD camera system was designed and developed for operating various sizes of Schottky-barrier IR-CCD image sensor chips. The camera has a digitally programmable frequency synthesizer for operating the 160 X 244, 320 X 244, and 256 X 256 image sensors developed at the David Sarnoff Research Center. The electronics of the camera are designed to provide the outputs required for operating a XYZ monitor, a standard TV monitor, or a computer workstation. At the core of the camera design is a RS-170 standard sync generator that supplies the waveforms for synchronizing the camera's circuitry to produce a composite …

Analysis And Simulation Of Chirp Radar System, Tina Tsung Tsai

Theses

This paper consists of a technique to design a Chirp radar system and proposes a solution to optimize the design of the linear time delay network required in such systems. A Chirp radar system has a wide bandwidth for high range resolution, and long pulse duration for high velocity resolution and high transmitted energy. The technique of a pulse compression system offers a means of increasing the average power available to illuminate radar targets without any loss of the resolution at the receiver needed for the tactical requirements of the system. This is accomplished by transmitting a wide pulse in …

Cmos Sram Design For Initializing Programmable Logic Devices, Ravi K. Vaidyanathan

Theses

This thesis presents the design of CMOS Static Random Access Memory (SRAM) which is imbedded within a high performance Programmable Logic Device (PLD). The SRAM and its control circuitry are used to initialize (or personalize) the NJIT PLD chip. The design is defined in 3-levels of functional hierarchy consistent with the physical and electronic design automation utilized for this design. The imbedded SRAM supports the PLD application circuit which includes 8 small Array and one large Control Programmable Logic Arrays.

The SRAM is structured as 64 X 138 bit array with serial read and write inputs. It is designed emphasizing …

Attenuation Properties Of An Lp 11 Mode In A W-Type Fiber Operating Below Cutoff, Chih-Chiang Wang

Theses

Rigorous formulation of a W-type fiber for its dispersion properties is presented. An LP mode has been studies extensively with respect to its attenuation properties when the frequency of operation is kept below cut-off. Due to rigorous dispersion equation numerical difficulties encountered in the computations, an approximate dispersion equation corresponding to weakly guided modes is solved. Numerical results corresponding to attenuation and propagation characteristics of the W-type fiber for radii and refractive index variations are presented. A computational subroutine for radial functions (Bessel, etc ) for complex argument has been used and proved to be useful in the legion of …

Schema Based Wiring Tool : A Computer Network And Cad Design System, Jia Jing Zhang

Theses

For the purpose of building a SBC-8052-Basic micro-controller based instrument system, a new SCHEMA II Computer Aided Design system for IBM-PC is used to enhance circuits design routine, and it is described here. The new features of this CAD are discussed, and the design example of a new version of the SBC-8052-Basic micro-controller is given here in detail.

Since the wiring board system is adopted as tool of the laboratory development and controlled by the QL microcomputer, and since SCHEMA II CAD, on the other hand, is used on the IBM-PC-AT, communication between the two microcomputers is accomplished, and the …

On-Line Blood Glucose Control System, Huan Zheng

Theses

A method has been developed that can monitor and control the meal initiation of rats. The goal of studying meal initiation is to find a mechanism of control of the diet, based upon the assumption that the body weight is closely related to feeding behavior. If the feeding behavior can be controlled, then the body weight can be controlled. The experimental system has two major functions: (1) Continuous measurement and recording of the blood glucose concentration and meal pattern of rats. (2) Automatic or manual infusing of glucose or other substances to the rats intravenously.

For blood glucose concentration and …

C/Ku Band Satellite Television Reception System, Costas A. Economides

Theses

The purpose of this thesis is to examine and investigate the design of a satellite reception system able to receive most C and Ku band North American geostationary satellites' TV transmissions. The performance criterion used for the system design is based on a required demodulated video signal-to-noise ratio maintained for a specified percentage of time in conjunction with overall cost considerations.

Furthermore, a computer program written in FORTRAN 77 is developed, which among other functions lists the notified, operational, geostationary satellites in sight with their corresponding look angles, from any given location on the earth.

Interface To 8052ah-Basic Microcontroller For A Multichannel Priority Interrupt System, Chen-Tung Mo

Theses

This thesis presents the design and development of a system with the capability to detect up to forty channels of signals generated from different analog sources and to process them under the control of a microcomputer.

The present work offers the design and implementation of a hardware interface unit in a multichannel real-time data acquisition system as well as the application software program to operate it. This kind of system can be widely used in process control, musical instrument interfacing, and machine automation.

This interface unit follows the general instrumentation architecture in both signal processing and logic control. The software …

An Investigation Of Interrupt Handling Schemes In Pipeline Processors, Shailesh Ratilal Gami

Theses

In order to acheive higher performance in a pipeline processor, proper interrupt handling is essential. In a pipeline processor, interrupt handling is difficult because many instructions are in the processor at the same time. This study describes and evaluates the different solutions to interrupt handling. Several pipelined 32-bit microprocessors have also been studied and their architectural and programming features are compared.

The Tapered Dielectric Rod-Conical Antenna, Nicholas I. Georghiades

Theses

The problem of the linearly tapered dielectric rod/conical antenna, excited by the HEI1 hybrid mode in a metallic circular waveguide , is rigorously studied. A theoretical model, and numerical investigation for the radiation characteristics of such an antenna are presented. The model is based on the combination of classical analysis of the Electromagnetic Fields within the dielectric rod, Local Mode Theory, and the Equivalence Principle for the determination of equivalent current distributions.

The far-zone radiation field is considered to be the summation of the fields produced by two radiative components in the dielectric rod/conical structure: The "aperture" of the uniform …

The Application Of Zero-Sum Games To Low Sensitivity Optimal Control, Jun Huang

Theses

This thesis deals with the synthesis of low sensitivity optimal control systems. Zero-Sum games are applied to the first order linear differential equation system. The goal is to obtain an optimal control of the system performance, and at the same time, reduce the sensitivity of the performance index and sensitivity trajectory.

In this thesis, the quadratic index of performance is selected in the argumented system which is combined/ the system equation with the sensitivity equation. Two control variables U & V are selected to maximize and minimize the system, in order to obtain the optimal value of the system.

Two …

Reliability Of Packaging In Microcircuits, Zia Iqbal

Theses

The semiconductor industry is faced with the problems of how to increase the level of reliability of semiconductor parts being used in the electronic systems which have had their lifetimes extended through new and better system design.

This paper deals with the reliability of packaging constructions commonly used in large scale integration / integrated circuits and will present the failure mechanisms and failure modes which can arise when proper processing is used. In addition, the materials used in each construction and how they affect reliabilty will be analyzed.

It is not the intention of this paper to present any new, …

An Analysis Of The Second-Order, Type-One Hilbert Phase-Locked Loop, Inn-Shian Lin

Theses

In this thesis, a second-order, type-one PLL ( Phase- Lock, Loop ) in which the usual lead-lag loop filter is paralleled with a Hilbert Transformer (the whole system is called HPLL) is analyzed. A motivation for the study was that earlier researchers have found improved performance if Ilse lead-lag network is paralleled by a differentiator, result mg in the so called ERPIM (Extended-Range Phase-Locked Demodulator). For the purpose of com-parison with earlier experimental and analytical results on the PLL and the ERPLD, the numerical results in this thesis ale based on the parameters of Acampora and Newton.

The basic characteristics …

Simulation Study Of The Multi-H Continuous Phase Modulation, Min-Ling Lin

Theses

Of particular interest in satellite communications are modulation techniques that have a relatively constant envelope and are power and bandwidth efficient. Attempts have been made to satisfy these requirements by using phase and frequency modulation formats. Recently, one approach has been researched which combines the modulation and encoding functions, which is referred to as multi-h continuous phase modulation. Simultaneously good power and bandwidth efficiencies can be achieved at the expense of increased complexity.

This report examines the performance of multi-h continuous phase modulation by a simulation. A multi-h phase coded modulation is generated, passed through the AWGN transmission channel. The …

Microprocessor Testing And Computer Aided Diagnosability Of Digital Circuits, Shirish Patel

Theses

Computer Aided Diagnosability Of Circuits (CADOC), a new method is developed for isolating and pin-pointing a faulty device in digital circuits. CADOC is based on graph-theoretic principle and PFD numbers. Without considering any SA1 or SAO faults, we can zoom out faulty device by selecting different diagnostic path to narrow down the faulty region and to isolate the faulty device. The efficiency of this new technique is confirmed by applying the technique to many examples.

Study Of Dynamic Cmos Families And Development Of Certain Guidelines For Logic Synthesis, Vinay Santurkar

Theses

This work studies in detail two dynamic logic families, namely Zipper and Nora. It compares their performance using SPICE, a popular circuit simulator. Results show that a novel clocking scheme and a different latch circuit for the Nora pipelined structure can push its maximum clock rate of CMOS Dynamic circuits higher. It also ascertains whether the increased complexity of NORA is justified compared to the simpler Zipper circuit. It is shown that for very long logic chains, Nora works faster than Zipper. The work also presents some guidelines for synthesis of logic functions using CMOS Dynamic Cells. It shows that …

An Investigation Of Electrical And Physical Properties Of Reactively, Diode Sputtered Silicon Nitride Thin Films, Divyang Manharlal Shah

Theses

Silicon nitride thin films were deposited by r.f. reactive sputtering of silicon in nitrogen and argon discharge. Biased and unbiased modes of diode mode sputtering were used. Typical parameters for a sputter deposition run were: base pressure, 1-2x10-6 torr; sputtering pressure, 5-7 mtorr; nitrogen partial pressure, 15-16%; cathode-anode gap, 4 inch; r.f. power, 200-250 watts; cathode voltage, 1.8-2.1 V r.f.; water vapor pressure, 20-30% of the base pressure. The film thickness and the refractive index were measured by ellipsometery. The films of thickness 300-2500A, refractive index 1.9-2.1 and resistivity 10101Ω — cm were obtained. The deposition rate was in the …

Design Of An Experimental Apparatus To Measure The Charge And Mass Of Ionized Species In A Partially Ionized Cluster Beam Deposition System, Nitin K. Shah

Theses

The objective of this research was the design and construction of an experimental apparatus to investigate the size distribution of gallium clusters that can be emitted from a heated crucible with a 1 mm nozzle. This research work involved the design and construction of a partially ionized cluster beam (PICB) deposition system which would provide low charged particle background for retarding field analysis and cluster size measurements. The apparatus also allowed control of critical parameters on which the cluster size may depend.

The promise of PICB is based on the formation of clusters of adatoms, their ionization and their acceleration …

Analysis Of Spread Spectrum System Using Direct Sequence Technique In Jamming Environment, Kandarp A. Vyas

Theses

A spread spectrum system is a means of transmitting data over a channel In addition it offers a wide variety of features like data security and signal hiding This work studies in detail a spread spectrum system using direct sequence binary phase shift keying. The Sliding Correlator and Sequential Detector techniques have been used to achieve synchronization. A brief study of pseudorandom noise has been presented. System was simulated on UNIX using 'c'. A modified version, suitable for software implementation, of Sliding Correlator and Sequential Detector was, used. Results generated using tins model are presented here.

Investigation Of Different Cmos Dram Sense Amplifier Configurations In Vlsi, Bihju Chiu

Theses

Sense amplifiers are particularly difficult circuits to design. In this work, only CMOS sense amplifiers are considered. There are typically two configurations of CMOS sense amplifiers: the cross-connected flip flop configuration and the current-mirror configuration. They are widely used nowadays with various modifications. These improved configurations are simulated and optimized with SPICE package, and their relative performances are also compared in this thesis.

On Conventional And Harmonic Load Flow Analysis, Ranjit B. Pradhan

Theses

In conventional power flow analysis, simultaneous linear equations numbering in thousands must be solved repeatedly and in many instances on-line. Luckily the matrix of coefficients of these equations is sparse with a few elements in each row. Therefore for a faster solution and to save computer memory, sparsity must be exploited and an optimal ordering of the equations must be sought. When considering harmonics, the number of the simultaneous equations to be solved is multiplied and therefore, considering sparsity and optimal ordering is doubly important.

In this thesis a software package for optimizing computation time and memory requirements through exploitation …

The Fast Fourier Transform In Assembly Languages Of Microprocessor 68000 And Microcontroller 8052, Hari Kumar Baldawa

Theses

In this report, the 256 point radix-2 FFT algorithm is written in assembly languages of microprocessor 68000( or 68008) and microcontroller 8052( or 8051). The data used can be upto 30 bits, of which the least significant 12 bits are assigned for fractional part.

The FFT code in assembly of 68000 is written for Sinclair's QL-100 personal computer with 68008 CPU. The SuperBASIC programs are used to access and test the performance of FFT code. The average time of execution falls between 0.3 to 0.4 seconds for 256 discrete points.

Again, same FFT algorithm is written in assembly language of …