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dc.contributor.advisorIslam, Naz E.eng
dc.contributor.authorGunda, Rahuleng
dc.date.issued2005eng
dc.date.submitted2005 Summereng
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.eng
dc.descriptionTitle from title screen of research.pdf file viewed on (July 13, 2006)eng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionThesis (M.S.) University of Missouri-Columbia 2005.eng
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Electrical engineering.eng
dc.description.abstractThis project deals with the analysis of high power radio frequency effects on a non-linear opposed contact GaAs photoconductive semiconductor switch, used in high power microwave generation. Specifically, effects of heating on the contacts and the bulk were studied. The changes in the I-V characteristics before and after heating the switches were analyzed. For heating effects, a power density input had been taken from an electromagnetic code and the simulations were performed at a temperature of 330 K. The carrier conduction process during the on-state operation of the device showed current controlled negative resistivity behavior at elevated temperature, due to heating of contacts and the bulk. Analysis shows that filamentary conduction results in thermal runaway that severely affects and damages the device as the breakdown voltages had been observed to be much less than the operating voltages of the switches. Further simulations were also done on a 6H-SiC photoconductive semiconductor switch and another configuration of the GaAs switch by the inclusion of an n+ layer at the cathode. Similar results were obtained for these switches under the effect of RF heating.eng
dc.identifier.merlinb55879512eng
dc.identifier.urihttp://hdl.handle.net/10355/4310
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.subject.lcshElectrical engineering -- Materialseng
dc.subject.lcshElectric switchgeareng
dc.titlePerformance analysis of high power photoconductive switch at elevated temperatureeng
dc.typeThesiseng
thesis.degree.disciplineElectrical engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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