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Ray tracer for radiation analysis of electronic components
Klement, Matej ; Fujcik, Lukáš (referee) ; Bohrn, Marek (advisor)
This thesis describes the methods of radiation analysis. It explains methods for calculating incident ionizing and non-ionizing radiation inside a shielding box. The methods are derived from active ESA standards for space engineering. Two MATLAB scripts and a stand-alone program were created based on these methods. One of the aims of this thesis was to compare the calculation methods based on their results and calculation principles. The main goal was to create a stand-alone program, which can be used as a useful tool for a special electronic circuit design engineer. This program can be used for calculating radiation inside a shielding geometry, discovering weak spots of the geometry, or showing ideal spots for the placement of a sensitive component.
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Scalable thermal model of a transistor package
Klement, Matej ; Junasová, Veronika (referee) ; Otáhal, Alexandr (advisor)
Diplomová práca popisuje problematiku simulovania ohrievania diskrétnej súčiastky tranzistoru v rámci jeho vlastného zapuzdrenia. V práci boli popísané dve metódy merania teplotného odporu na základe informácií z noriem organizácie JEDEC. Model tranzistoru bol simulovaný pomocou metódy konečných prvkov v programe Ansys ICEPAK so sledovaním teploty spoju voči teplote puzdra. Časovou simuláciou ohrievania v kombinácií s menením parametrov bola vytvorená sada ohrievacích kriviek pre všetky konfigurácie tranzistoru. Ohrievacie krivky boli transformované na spektrum časových konštánt na základe algoritmov popísaných v normách JEDEC. Tieto algoritmy boli pre účely diplomovej práce implementované v programovacom jazyku Python. Jednotlivé časové spektrá boli zjednodušené do dvoj-prvkovej teplotnej siete v prevedení Foster-typu. Všetky tieto teplotné siete boli ďalej transformované do teplotnej siete Cauer-typu. Pre každý parameter v parametrickej simulácii boli vytvorené interpolačné funkcie hodnôt teplotných sietí. Na základe interpolačných funkcií bol vytvorený škálovateľný teplotný model, ktorý bol následne simulovaný v programe LTSpice a jeho výsledky porovnané s výsledkami zo simulácie metódy konečných prvkov.
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Ray Tracing Software For Radiation Analysis Of Electronic Components
Klement, Matej
This article presents software for calculation of ionising and non-ionising radiationreceived by a component. The software evaluates surrounding shielding provided by user-definedmodel of a shielding box. It utilises ray tracing method to simulate and measure the trajectories ofparticles, which are assumed to be traveling in a straight line.
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Ray tracer for radiation analysis of electronic components
Klement, Matej ; Fujcik, Lukáš (referee) ; Bohrn, Marek (advisor)
This thesis describes the methods of radiation analysis. It explains methods for calculating incident ionizing and non-ionizing radiation inside a shielding box. The methods are derived from active ESA standards for space engineering. Two MATLAB scripts and a stand-alone program were created based on these methods. One of the aims of this thesis was to compare the calculation methods based on their results and calculation principles. The main goal was to create a stand-alone program, which can be used as a useful tool for a special electronic circuit design engineer. This program can be used for calculating radiation inside a shielding geometry, discovering weak spots of the geometry, or showing ideal spots for the placement of a sensitive component.
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