Sari Merilampi

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Passive UHF RFID tag consists of a microchip attached directly to an antenna. Proper impedance match between the antenna and the chip is crucial in RFID tag design. It directly influences RFID system performance characteristics such as the range of a tag. It is known that an RFID microchip is a nonlinear load whose complex impedance in each state varies(More)
Chye-Hwa Loo, Khaled Elmahgoub, Fan Yang, Atef Elsherbeni* , Darko Kajfez, Ahmed Kishk, Tamer Elsherbeni, Leena Ukkonen, Lauri Sydänheimo, Markku Kivikoski, Sari Merilampi, and Pekka Ruuskanen (1) Department of Electrical Engineering, The University of Mississippi, University, MS, 38677, USA {cloo, kelmahgo, fyang, atef, eedarko, ahmed,(More)
Childhood obesity and physical inactivity are well-known problems which are typically related with videogames. The goal of this study is to develop digital games which motivate children and adolescents to exercise more, instead. The games are realized in such way that no special game consoles are required. The games can be played with a regular computer(More)
The purpose of this paper was to study how aged people experience mobile controlled game as a method of rehabilitation and recreation. The target group contained persons 70+ years of age living in assisted living conditions (N=34). The average age of the participants was 85.9 years. Women (n=17) and men (n=17) were equally presented in the sample group.(More)