Dr. Giri's contributions have been in the areas of Nuclear Electromagnetic Pulse (NEMP) simulators, design of radiating systems for high-power microwave (HPM) systems and developing ultrawideband (UWB) antenna systems. He has continuously worked in these three fields (NEMP, HPM and UWB) of applied electromagnetism, since his graduation from Harvard in 1975.

NEMP Simulators

Dr. Giri has been a leader in the design of NEMP guided wave (transmission line type) simulators. Some of these simulators pose unique engineering problems, owing to their large sizes. He has solved these problems in both quality and cost effective ways. He has demonstrated skills in working with high-voltage engineers, pulse power engineers and program managers in seeing several projects to successful completion.
Dr. Giri is an electromagnetic expert responsible for the design and optimization of major NEMP simulators in the U.S., Italy, Sweden, Switzerland, Germany and Israel. He is well reputed for the quality of his technical work in governmental organizations of many nations.

HPM Antennas

Dr. Giri is a leader in the design of radiation systems for HPM weapon systems. His pioneering work has won him a BEST PAPER Award from the SUMMA Foundation presented at the 1992 Joint Symposium of IEEE Antennas and Propagation Society, URSI Radio Science and Nuclear Meetings. His preeminence in this area caused him to be invited by the IEEE Transactions on Electromagnetic Compatibility to be a guest editor of a special issue on this topic, published in August 1992. His work is also published in a book published by Taylor and Francis International Publishers, Washington, D.C. This research was sponsored by U.S. Army Research Laboratory, Adelphi, MD.

UWB Systems

Dr. Giri is also in the forefront of research into transient (ultrawideband) antenna systems. He designed, analyzed and successfully built the first reflector type of an Impulse Radiating Antenna (IRA), under SBIR Phase I and II contract awards from the Air Force Research Laboratory, Kirtland AFB, NM in 1996. Since that pioneering work, he and others have built many UWB systems that are finding many applications in military and civilian sectors.