Dr. Shiban Koul of Indian Institute of Technology Delhi

The motivation for the 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 the design, development, and complete characterization of a 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, the design and development of metamaterial-inspired micromachined switches at sub-millimeter wave frequencies will be described. The talk will conclude by giving a 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 currently an Emeritus Professor at the Indian Institute of Technology, Delhi. He served as

Chair of Astra Microwave Products Limited, Hyderabad, a major Indian company involved in the Development

of RF and Microwave systems for 10 years. His current research interest includes RF MEMS, high-frequency

wireless communication, microwave engineering, microwave passive and active circuits, device modeling,

millimeter and sub-millimeter wave IC design, body area networks, flexible and wearable electronics, medical

applications of sub-terahertz waves, and reconfigurable microwave circuits including miniaturized antennas.

He has successfully completed 38 major sponsored projects, 52 consultancy projects, and 61 technology

development projects.

Dr. Koul has been a member of the IEEE for more than 30 years. He has served as the Chair of the ED/MTT

Chapter, India Council, and was on the XCOM of the IEEE Delhi Section. He also served as a member of MTT

ADCOM, MTT-6 and 21, India initiative team for MTT Membership Services, MTT Speaker bureau lecturer,

Distinguished Microwave Lecturer (DML) and Distinguished Microwave Instructor (DMI). He is the author of

615 Research Papers and 22 state-of-the-art books, 2 e-books, and holds 26 patents. He is a Life Fellow of the

IEEE, the Indian National Academy of Engineering (INAE), and the Institution of Electrical and Electronics

Engineering (IETE). He is the recipient of numerous awards including IEEE MTT Society Distinguished Educator

Award -2014 and Lifetime Achievement Award-2023 from the IETE, India.

Address:IIT Delhi, , New Delhi, India