1. Universiti Teknologi MARA,College of Engineering,Electrical Engineering Studies,Masai,Malaysia
2. Universiti Teknologi MARA,College of Engineering,School of Electrical Engineering,Shah Alam,Malaysia
3. Universidad de CESMAG,Grupo de Investigación SIGMA,Pasto,Colombia
4. Universiti Teknologi MARA,Microwave Research Institute,Shah Alam,Malaysia