Subal Kar is former Professor and Head of the Institute of Radio Physics and Electronics, University of Calcutta, India. His field of specialization is microwave engineering, metamaterials and high energy physics. Dr. Kar has three patents to his credit and published a large number of research papers in peer-reviewed international journals. He was visiting scientist to various universities and institutes in US, Europe and Asia including Lawrence Berkeley National Laboratory, US, Oxford University, UK, Cockcroft Institute, UK, Kyoto University, Japan. Dr. Kar has authored a text book entitled "Microwave Engineering-Fundamentals, Design and Applications" and contributed a number of chapters in books published by Elsevier, Springer Nature, CRC Press. He is the recipient of young scientist award of URSI and IEEE MTT and Fulbright award of US government.