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Pulsed and transient characterization of THz Schottky diodes

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Mallat, Juha
dc.contributor.advisor Kiuru, Tero
dc.contributor.author Khanal, Subash
dc.date.accessioned 2012-11-23T06:36:37Z
dc.date.available 2012-11-23T06:36:37Z
dc.date.issued 2012
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/6105
dc.description.abstract Any non-linear electronic device can be used for the purpose of frequency mixing or multiplication. But when the frequency is very high (in THz band), only few devices can provide acceptable conversion efficiency and low noise performance. GaAs Schottky barrier diodes are preferred and commonly used in heterodyne receivers as a mixing element. However, at higher frequencies the diode size is small which reduces its thermal capability and the self-heating is significant even for small current levels. In this master's thesis different electrical and thermal characterization methods for a diode are reviewed. Limitations of the DC I-V measurement method are identified and a test is carried out to study the feasibility of a new pulsed system for characterization of THz Schottky diodes. The military standard method for thermal impedance testing is studied and suitable modifications to the military standard method are proposed. The transient temperature response of the diode is fitted to an exponential function to extract the junction temperature, thermal impedance and thermal time-constants associated with the internal distribution of thermal resistances and heat capacitances of the diode under test. en
dc.format.extent 61 s.
dc.format.mimetype application/pdf
dc.language.iso en en
dc.title Pulsed and transient characterization of THz Schottky diodes en
dc.type G2 Pro gradu, diplomityö fi
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.contributor.department Radiotieteen ja -tekniikan laitos fi
dc.subject.keyword Schottky diode parameter extraction en
dc.subject.keyword pulsed I-V measurement en
dc.subject.keyword thermal characterization en
dc.subject.keyword self-heating en
dc.subject.keyword time-constant en
dc.subject.keyword resistance en
dc.identifier.urn URN:NBN:fi:aalto-201211243400
dc.type.dcmitype text en
dc.programme.major Radiotekniikka fi
dc.programme.mcode S-26
dc.type.ontasot Diplomityö fi
dc.type.ontasot Master's thesis en
dc.contributor.supervisor Räisänen, Antti
dc.location P1 fi
local.aalto.openaccess yes
local.aalto.digifolder Aalto_05457
dc.rights.accesslevel openAccess
local.aalto.idinssi 45422
dc.type.publication masterThesis
dc.type.okm G2 Pro gradu, diplomityö


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