AN ANALYSIS OF SOLITONS IN SURFACE ACOUSTIC WAVE DEVICE MEDIA
Abstract
Recently, in the area of mathematical physics, there has been a growing interest in nonlinear, dispersive systems, and particularly in solitons, a type of wave which exists as a balance between the nonlinearity and the dispersion. There are two basic types of solitons, one of which is a baseband, pulse-like signal, and the other consisting of an RF pulse in which the envelope exhibits soliton behavior. In both cases the soliton behavior is characterized by the stable propagation of the signal in the presence of nonlinearity and dispersion. All SAW exhibit dispersion and nonlinearity to varying degrees. The purpose of this thesis is to relate the rapidly growing developments in soliton theory to the SAW device field. Computer simulations of a phenomenological model identify various parameters which characterize the development of an initial condition into solitons. Experimental measurements of harmonic generation and pulse propagation are used to establish the validity of the model. A number of SAW device configurations are evaluated in the context of the proposed model.
Degree
Ph.D.
Subject Area
Electrical engineering
Off-Campus Purdue Users:
To access this dissertation, please log in to our
proxy server.