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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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Special Operations Forces (SOF) require a real time display of appr opriate data to allow the helmsman to access the damage potential to his cargo (equipment/personnel) and support his decision relative to speed and course selection when operating in rough water. Furthermore, maintenance support personnel need quantitative data to support design decisions and maintenance activities. This proposa ...

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 ...

Phased-array radar employing wideband digital beamforming (DBF) offers the potential for detecting and tracking incoming cruise missiles while defeating electronic countermeasures such as chaff, jamming and anti-reflective coatings. A wide instantaneousradar bandwidth is essential for defeating these threats, resulting in improved range resolution and target signature. Digital beamforming may be u ...

The objective of the proposed effort is to develop a digital beamforming (DBF) processor capable of generating multiple simultaneous receive beams with a wide (>500 MHz) instantaneous bandwidth (IBW). This would offer a significant improvement over a similar DBF processor with 15 MHz IBW that Applied Radar, Inc. previously developed for AFRL. The wide bandwidth is necessary for a number of high-re ...

The detection and classification of reentry vehicles in the presence of jammers and clutter is a very important missile defense radar problem. High resolution, wideband adaptive beamforming (ADBF) is an important solution component in which both the transmit and receive beamforming weight vectors are dynamically updated to optimize performance in a time varying jammer and clutter environment. An i ...