Vishal Kesari received an MSc (Physics) degree from Veer Bahadur Singh Purvanchal University, India, and a PhD (Electronics Engineering) degree from the Institute of Technology, Banaras Hindu University (IT-BHU) (now known as the Indian Institute of Technology (IIT-BHU)), India, in 2001 and 2006, respectively. Currently, he is a senior scientist at Microwave Tube Research and Development Centre (MTRDC), Defence Research and Development Organisation (DRDO), Bengaluru, India. Dr. Kesari is the recipient of many prestigious awards. He is internationally acclaimed for authoring/co-authoring journal papers and books. BN Basu received BTech, MTech, and PhD degrees from the Institute of Radiophysics and Electronics, Calcutta University, in 1965, 1966, and 1976, respectively. He is superannuated as Professor and Head of the Electronics Engineering Department and Coordinator of the Centre of Research in Microwave Tubes at the Institute of Technology, Banaras Hindu University (BHU), now known as the Indian Institute of Technology-BHU. Currently, he holds the position of Distinguished Adjunct Professor at the Supreme Knowledge Foundation Group of Institutions (SKFGI) in Mankundu, West Bengal, India. Professor Basu is the recipient of many prestigious awards, including the John Robinson Pierce Award of the IEEE Electron Devices Society, USA (2023) for Excellence in Vacuum Electronics. He is well known for authoring/co-authoring journal papers and books.