Leonard M. Johnson

Dr. Leonard M. Johnson is a senior staff member in the Quantum Information and Integrated Nanosystems Group, where he is engaged in device technology programs for wideband, high-speed, and low-power applications, including radar, signal processing, and computation. He is currently managing an effort to develop superconductive single-flux-quantum integrated circuits for high-speed, ultralow-power digital computation.

Recently at the Laboratory, he led a technology development effort for highly compact wideband digital receiver/exciter modules for phased array radar applications. This effort encompasses the design of state-of-the-art silicon germanium integrated circuits, advanced multichip-module (MCM) packaging, and wideband digital firmware. In earlier efforts, Johnson developed key photonic technologies for wide-dynamic-range fiber-optic antenna remoting and optical beamforming systems.

Currently, he is engaged in applying microwave photonic technology to wideband signal processing applications. In addition, he has been engaged in numerous study efforts focused on advanced electronic technologies for Department of Defense systems.

Johnson has authored or coauthored numerous papers and conference presentations in the fields of electronic and optical device technology. Recently, he presented short courses and tutorials on integrated circuit technology for phased array radar applications at conferences such as the IEEE Compound Semiconductor Integrated Circuit Symposium and the IEEE International Symposium on Phased Array Systems and Technology.

Johnson received BS, MS, and PhD degrees from the Massachusetts Institute of Technology, all in electrical engineering. As a graduate student, he conducted early research on lithium niobate integrated optical devices for sensing applications.