Title :
Novel method for the assessment of thermal properties of high power thyristor structure using photoacosutic technique with composite excitation signal
Author :
Duer, R. ; Suszynski, Z.
Author_Institution :
Oticon Polska Production Sp.z.o.o., Szczecin, Poland
Abstract :
This paper presents a method for assessment of thermal properties of multi-layers structures using contrast analysis of temperature response registered with photoacoustic technique. It is based on the analysis of the amplitude spectrum of temperature contrasts. Photoacoustic signal is registered in time domain with disadvantageous signal-to-noise ratio. Due to that the new approach for excitation signal synthesis was proposed. Using a composite excitation signal generated in proposed way it is possible to considerably higher signal-to-noise ratio.
Keywords :
photoacoustic spectroscopy; thermal properties; thyristors; amplitude spectrum; composite excitation signal; contrast analysis; excitation signal synthesis; high power thyristor structure; multilayers structures; photoacosutic technique; photoacoustic signal; photoacoustic technique; signal-to-noise ratio; temperature contrasts; temperature response; thermal properties; time domain; Driver circuits; Frequency measurement; Impedance; Measurement by laser beam; Temperature; Temperature measurement; Thermal analysis;
Conference_Titel :
Thermal Investigations of ICs and Systems (THERMINIC), 2010 16th International Workshop on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-8453-9
