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Author:Saber, Mohammad Arif
Title:Thermal characterization of THz planar Schottky diodes using simulations
Publication type:Master's thesis
Publication year:2012
Pages:60      Language:   eng
Department/School:Radiotieteen ja -tekniikan laitos
Main subject:Radiotekniikka   (S-26)
Supervisor:Räisänen, Antti
Instructor:Mallat, Juha
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201302031387
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto  1369   | Archive
Keywords:Schottky diode
thermal characterization
thermal resistance
thermal time constant
self heating
junction temperature
Abstract (eng): Schottky diodes are preferred and used in heterodyne receivers as a mixing element.
In higher frequencies (THz band) the size of the diode especially the anode junction, becomes very small and causes reduced thermal properties compared to its lower frequency counterparts.
Self-heating for these high frequency diodes becomes very significant for even a very small amount of current.

In this master's thesis different methods of thermal and electrical characterization have been studied.
Also different thermal characteristics like junction temperature, thermal resistance and thermal time constant have been investigated through simulations.
COMSOL is the elected software for the simulations.

Two commercial diodes have been analyzed and different methods of simulating the thermal properties have been discussed and presented.
Also some comparisons with measurement results have been carried out.
However, in all these thermal simulations the diode current is kept constant and only DC simulations have been carried out.
ED:2013-01-14
INSSI record number: 45804
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