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Prof. Luz BALADO, Associate Professor Universitat Politècnica de Catalunya (UPC) Electronic Engineering Department

Theme: Lissajous compositions for test and diagnosis purposes of analog cells
Date: July 4th, 2011 (Monday) - 15:00 , TIMA Laboratory, room T312


Luz Balado received the degree in Industrial Engineering and the Doctor degree in Electronic Engineering from the Universitat Politècnica de Catalunya (UPC). She is presently Associate Professor at the Electronic Engineering Department of the UPC where teaches Analog Electronic Design and Electronic Instrumentation and is involved in its Quality in Electronics (QuInE) research Group. Her main research interests are Defect Modeling and Design and Test of mixed-signal circuits. She is now in a sabbatical year devoted to explore design and testing aspects of MEMs devices with research and lecturer objectives.


In the seminar I am going to present mine and the group activities in mixed-signal testing area; basically the use of Lissajous compositions for test and diagnosis purposes of analog cells. Lissajous based compositions use the orthogonal composition of n circuit signals to obtain a signature of the circuit for specific input conditions. This signature has a shape, in some aspects, similar to a human signature and represents the unique circuit behavior as a human signature identifies a person. The Lissajous signature shape changes significantly with circuit conditions and we are able to process these changes to classify good/bad circuits or identify circuit parameters. To do this, we worked with different proposals, X-Y zoning for two composing signals and Lissajous knots for n-dimensional signals The basic results of these proposals and some very preliminary results of the work developed with the use of a commercial MEMs accelerometer will be presented