B. SOMANATHAN NAIR has been the Principal of various government engineering colleges in Kerala. He has also served as Joint Director of Technical Education, Government of Kerala, the first Controller of Examinations, Kannur University, Kerala, and Professor and Head of Department of Electronics in various government engineering colleges of Kerala. Besides, he had been a Visiting Faculty, Department of Electrical Engineering, University of Idaho, USA. Professor Nair is the author of 28 textbooks in Electronics and Communication Engineering, of which he has authored/co-authored five books for PHI Learning.
S.R. DEEPA is the former Principal of K.M.P. College of Engineering, Perumbavoor, Kerala. Earlier, she was Professor and Head, Department of Electronics and Communication Engineering, Pankaja Kasthuri College of Engineering and Technology, Thiruvananthapuram and Visiting Professor, Department of Optoelectronics, University of Kerala. She is the co-author of 10 textbooks in the area of electronics engineering.