ANALYTICAL AND EXPERIMENTAL TECHNIQUES FOR T m ELECTROMAGNETIC CHARACTERIZATION OF MATERIALS

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" ANALYTICAL AND EXPERIMENTAL TECHNIQUES FOR T m ELECTROMAGNETIC CHARACTERIZATION OF MATERIALS "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	149663
Doc. No	:	ET21455
Main Entry	:	Michael John Havrilla
Title Proper	:	ANALYTICAL AND EXPERIMENTAL TECHNIQUES FOR T m ELECTROMAGNETIC CHARACTERIZATION OF MATERIALS
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	Electromagnetic material characterization is the process of determining thepermittivity and permeability of matter. This process is predominantly employed instealth and integrated-circuit technoIogies with the aid of the analytical Nicolson-Ross-Weir (NRW) formulation. The increasing demands of industry have rendered the NRWtechnique invalid under certain conditions due to theoretical violations, leading toerroneous results, In rectangular waveguide measurements, for example, it is assumedthat sample material is comprised of a single layer only, that walls are perfectlyconducting and that no gaps exist between the sample and conducting boundaries.However, in the industry environment, samples are often multi-layered due to materialintegrity and high-temperature measurements lead to sample-to-wall gaps and involvewaveguide metals that are typically poorly conducting. In addition, high-temperaturestrip and microstrip field applicators also involve imperfectly-conducting boundaries,leading to gross errors in the material characterization process. This dissertation providesseveral techniques to accommodate these errors.Chapter 2 provides two methods, the direct and deembed techniques, forcharacterizing materials that are embedded in multi-layered samples. Although bothformulations utilize wave-transmission matrices, it is shown that the direct method musttested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL44622.pdf
Title and statement of responsibility and	:	ANALYTICAL AND EXPERIMENTAL TECHNIQUES FOR T m ELECTROMAGNETIC CHARACTERIZATION OF MATERIALS [Thesis]