1. Department of Teacher Training in Electrical Engineering, Research Center of Innovation Digital and Electromagnetic Technology (iDEMT), Faculty of Technical Education, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
2. Magpie Patent and Technology Company Ltd., Ban Mai, Pakkret, Nonthaburi, Thailand
3. Department of Electrical and Computer Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand