1. University of Leeds,School of Electronic and Electrical Engineering,Leeds,United Kingdom
2. Chulalongkorn University,Faculty of Engineering,Department of Electrical Engineering,Thailand
3. Rajamangala University of Technology,Department of Electronics and Telecommunication Engineering,Krungthep,Thailand
4. King Mongkut’s University of Technology North,Faculty of Applied Science,Department of Industrial Physics and Medical Instrumentation,Bangkok,Thailand