Shiban K Koul, Emeritus Professor of CARE, IIT Delhi

The motivation for fabrication of high frequency circuits using micromachining technology is due to high levels of functionality with low power consumption, precise dimensions and electrically activated moving parts. In recent years research has been carried out on the development of passive components, novel switching circuits, phase shifters, antennas, and tunable components for millimeter wave RF front end for 5G and radar applications. This talk will present design, development, and complete characterization of variety of micromachined switches (SPST-SP16T), novel compact analog and digital phase shifters and multiport switching networks. Reliability analysis of RF micromachined devices with emphasis on multiport switching networks, 4-to-5-bit phase digital shifters and tunable filters will also be discussed. Design guidelines on micromachined antenna development and integration with passive elements and phase shifters will be briefly presented. Next, design and development of metamaterial inspired micromachined switches at sub-millimeter wave frequencies will be described. The talk will conclude by giving future scope of RF micromachining in the design and development of different types of metamaterial-based frequency selective surfaces, absorbers and other 3D-micromachined devices in Sub-THz regime.

Biography:

Shiban K Koul is a Prof. at the Indian Institute of Technology, Delhi. He is the Chair of Astra Microwave Products Limited, Hyderabad, a major Indian company involved in the Development of RF and Microwave systems. His current research interests include RF MEMS, Device modeling, Microwave and Millimeter wave IC design, and Reconfigurable microwave circuits including antennas.

Dr. Koul has been a member of the IEEE for > 30 years. He has served as the Chair of the ED/MTT Chapter, India Council and on the XCOM of the IEEE Delhi Section. He is a member of MTTADCOM, MTT-6 and 21, India team for MTT Membership Services, Vice Chair MGA, and the MTT’s Speaker bureau. He is the author of 199 Research Papers and 7 books and holds 6 patents. He is an Fellow of the IEEE. the Indian National Academy of Engineering, and the Institution of Electronics.