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Lehigh University

1969

Electrical and Computer Engineering

Articles 1 - 11 of 11

Full-Text Articles in Engineering

An Improved Electromechanical Electron Trajectory Tracing System, Jean Paul Dethomas Jan 1969

An Improved Electromechanical Electron Trajectory Tracing System, Jean Paul Dethomas

Theses and Dissertations

An analog system is described for automatically plotting of the trajectories of free electrons in a bidimensional electrostatic field using the conductive sheet model.


An Investigation Of The Use Of A Modified Triple Carbonate Cathode Coating In The Manufacture Of High Frequency Carrier Electron Tubes, Russell William Eckert Jan 1969

An Investigation Of The Use Of A Modified Triple Carbonate Cathode Coating In The Manufacture Of High Frequency Carrier Electron Tubes, Russell William Eckert

Theses and Dissertations

Because the high frequency Carrier Electron Tubes were exhibiting several characteristics that were detrimental to tube manufacture such as low test yields, below nominal test parameters and difficulty of activating and aging, it was proposed to evaluate the use of a modified triple carbonate cathode coating with a reduced percentage of calcium carbonate in place of the double carbonate cathode coating that contains no calcium carbonate as the emission material.


A Theoretical Investigation Of The Propagation Of Lse-Modes In Rectangular Waveguides Loaded With Dielectric Of Finite Conductivity, Hans Ruediger Gnerlich Jan 1969

A Theoretical Investigation Of The Propagation Of Lse-Modes In Rectangular Waveguides Loaded With Dielectric Of Finite Conductivity, Hans Ruediger Gnerlich

Theses and Dissertations

The propagation in rectangular waveguides containing slabs having finite condustivity is investigated theoretically. The waveguide is assumed to be lossless and of infintie length. the slabs are parallel to the narrow walls and extend over their full height and length. They have arbitrary thickness, dielectric constant and conductivity.


Mechanization Of Context Information For Image Interpretation, Kenneth George Salter Jan 1969

Mechanization Of Context Information For Image Interpretation, Kenneth George Salter

Theses and Dissertations

This is a theoretical and experimental study of ways to use context for automatic interpretation of aerial photography. One type of photo interpretation system interprets a frame of aerial photography by dividing the frame into several square cells and classifying each cell. A parameter extraction device scans each cell, makes measurements, and classifies each cell according to statistical decision theory.


Decimal To Binary Number Conversion, Henrik Arthur Schutz Jan 1969

Decimal To Binary Number Conversion, Henrik Arthur Schutz

Theses and Dissertations

Most programming languages in current use include procedures for converting decimal numbers to a binary form used for computation. Due to the change in radix, the value of the converted result is, in general, an approximation to the value of its decimal representation. The procedures discussed here are of the minimum-error type, and are used in a compiler environment.


An Empirical Determination Of The Characteristic Impedance Of Rectangular Strip Transmission Lines With Offset Inner Conductors, Joseph R. Bouvier Jan 1969

An Empirical Determination Of The Characteristic Impedance Of Rectangular Strip Transmission Lines With Offset Inner Conductors, Joseph R. Bouvier

Theses and Dissertations

This thesis presents an experimental approach to the problem of finding the characteristic impedance of a rectangular stripline with an off-set inner conductor. It employs an enlarged scale model of the transmission line, immersed in an electrolytic tank, as one branch of a simple bridge circuit. One adjacent branch of the bridge circuit consists of a similar model of a transmission line with known characteristic impedance. A complete analogy is derived between the field pattern in the transmission line and the current pattern in the model.


Experimental Study Of Transient Properties Of A Wide Pin Diode, Mahendra I. Patel Jan 1969

Experimental Study Of Transient Properties Of A Wide Pin Diode, Mahendra I. Patel

Theses and Dissertations

The purpose of this thesis has been to study some of the properties of the hole-electron plasma in the i-layer of a wide p-i-n diode, particularly phenomena associated with the build-up of plasma in a diode, initially at equilibrium, excited with various voltage signals. The investigations of changes in plasma density with time have made use of the fact that this quantity is almost linearly related to the conductance of the diode. Thus the study was carried out by observing the transmitted current resulting from the application of various signals.


Characterization Of The Interdigital Gap Capacitor For Microwave Stripline And Microstrip Applications, Frederick M. Goll Jan 1969

Characterization Of The Interdigital Gap Capacitor For Microwave Stripline And Microstrip Applications, Frederick M. Goll

Theses and Dissertations

This thesis concerns the development of an equivalent circuit model and the associated theory necessary to characterize the interdigital gap capacitor throughout the frequency range. The results of this study show that the interdigital gap capacitor can be approximated as a lumped series capacitor for frequencies, where the capacitor digit length is less than 2% of a wave length.


Threshold Characteristics Of Frequency Modulation Noise, Charles J. Ludinsky Jan 1969

Threshold Characteristics Of Frequency Modulation Noise, Charles J. Ludinsky

Theses and Dissertations

This paper presents a study of the behavior of an FM system with carrier-to-noise ratios in the threshold region. This study was directed toward determination of the statistical distribution of the noise output.


Transient Properties Of A Wide P I N Diode, Karl Kerchmar Jan 1969

Transient Properties Of A Wide P I N Diode, Karl Kerchmar

Theses and Dissertations

This thesis consisted of a study of the transient response of a p-i-n diode with wide i layer. Attention was directed to investigating the time required for transition from high impedance to low impedance after application of a voltage stop. This transient process was assumed to be related to the time required for formation of a neutral hole-electron plasma out of the clouds of holes and electrons injected from the P and N regions, respectively.


An Investigation Of The Combined Effects Of Gold Diffusion Temperatures And N-Type Epitaxial Material Resistivities Upon The Electrical Parameters Of A Silicon Beam-Lead Sealed-Junction Transistor, Anthony Thomas Napoli Jan 1969

An Investigation Of The Combined Effects Of Gold Diffusion Temperatures And N-Type Epitaxial Material Resistivities Upon The Electrical Parameters Of A Silicon Beam-Lead Sealed-Junction Transistor, Anthony Thomas Napoli

Theses and Dissertations

An investigation has been made to understand the effects of gold diffusion temperatures and different epitaxial resistivity values upon the electrical characteristics of a silicon beam-lead sealed-junction transistor whose design is similar to the transistor components presently being used in the fabrication of silicon integrated circuits.