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dc.contributor.advisorPeterson, Andrew F.
dc.contributor.authorJung, Seungwoo
dc.date.accessioned2016-01-07T17:36:35Z
dc.date.available2016-01-07T17:36:35Z
dc.date.created2015-12
dc.date.issued2015-11-13
dc.date.submittedDecember 2015
dc.identifier.urihttp://hdl.handle.net/1853/54419
dc.description.abstractThe objective of this research is to optimize silicon-germanium (SiGe) heterojunction bipolar transistor (HBT) BiCMOS analog circuit building blocks for operation in extreme environments utilizing design techniques. First, negative feedback effects on single-event transient (SET) in SiGe HBT analog circuits were investigated. In order to study the role of internal and external negative feedback effects on SET in circuits, two different types of current mirrors (a basic common-emitter current mirror and a Wilson current mirror) were fabricated using a SiGe HBT BiCMOS technology and exposed to laser-induced single events. The SET measurements were performed at the U.S. Naval Research Laboratory using a two-photon absorption (TPA) pulsed laser. The measured data showed that negative feedback improved SET response in the analog circuits; the highest peak output transient current was reduced by more than 50%, and the settling time of the output current upon a TPA laser strike was shortened with negative feedback. This proven negative feedback radiation hardening technique was applied later in the high-speed 5-bit flash analog-to-digital converter (ADC) for receiver chains of radar systems to improve SET response of the system.
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technology
dc.subjectAnalog circuit
dc.subjectSEE
dc.subjectSET
dc.subjectRadiation hardening
dc.subjectADC
dc.subjectAnalog-to-digital converter
dc.subjectSiGe
dc.subjectHBT
dc.subjectBiCMOS
dc.titleOptimization of SiGe HBT BiCMOS analog building blocks for operation in extreme environments
dc.typeDissertation
dc.description.degreePh.D.
dc.contributor.departmentElectrical and Computer Engineering
thesis.degree.levelDoctoral
dc.contributor.committeeMemberKim, Taesoo
dc.contributor.committeeMemberCressler, John D.
dc.contributor.committeeMemberDurgin, Gregory D.
dc.contributor.committeeMemberVela, Patricio A.
dc.date.updated2016-01-07T17:36:35Z


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