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The research proposed here is built on the recent successful fabrication of metal oxide semiconductor heterjunction field effect transistors (MOS-HFETs) based on AlGaN/GaN heterostructures with very high drain-current-driving and gate-control capabilitiesas well as unprecedented high breakdown voltages by the P.I.s research group at Kansas State University. III-nitride HFETs have great promises i ...

Ultrasonic motors are novel devices that operate based on the piezoelectric effect. A "smart material" piezoceramic (Lead Zirconium Titanate, PZT) ring is excited by electrical signals and generates a traveling surface wave. The traveling surface wave drives a rotor through a toothed stator. These motors have several distinct advantages: low profile, high torque at low speeds, quick response, inse ...

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The electromagnetic directed energy method (lasers, particle beams, and high power microwaves) of defending against missiles relies on generating a large amount of energy at the defense site, locating the target, and then transporting a large fraction of that energy to the target along a line of sight at the speed of light, to either destroy or destabilize the threat at as long range as possibl ...

This proposal details the development of a new FCG design that facilitates customization to drive loads of various impedances. It addresses several of the performance limiting problems associated with small helical FCGs and potentially facilitates driving high output voltage, moderate current loads directly, without the need for a transformer.

Recent advances in directed energy weapons (DEW) require radar systems to implement front door protection against high power signals. Although nonlinear protection elements have been successfully employed in the past, fast ultra wideband (UWB) and high power microwave (HPM) signals are not successfully blocked by most current circuit protection technologies. This proposal details the developme ...

Recent advances in directed energy weapons (DEW) require radar systems to implement front door protection against high power signals. Although nonlinear protection elements have been successfully employed in the past, fast ultra wideband (UWB) and high power microwave (HPM) signals are not successfully blocked by most current circuit protection technologies. This proposal details the develop ...

The potential threat of directed energy weapons (DEW) and other high peak power electromagnetic transient signals require radar systems to implement front door protection against high power signals. Fast ultra wideband (UWB) and high power microwave (HPM) signals are not successfully blocked by most current protection technologies. The Phase I work demonstrated a quasi-passive, solid state e ...