Dr G. S. N. Raju is Professor, Department of Electronics and Communication Engineering, College of Engineering, Andhra University, Visakhapatnam, India. A Ph.D from Indian Institute of Technology, Kharagpur, he has 24 years of experience in teaching and research at the undergraduate, postgraduate and Ph.D levels. His main areas of interest are electromagnetic field theory, antennas and wave propagation, radar and microwave communication, and bio- instrumentation. A Visiting Professor in the University of Karlsrube and Padeaborn, Germany in 1994, he is also the recipient of the State Best Teacher Award (1999) and the Best Researcher Award (1994) in Andhra Pradesh. He has published over 100 papers in international journals and proceedings of national and international conferences.