Award Data

Integration of many different devices on a single silicon carbide (SiC) substrate is necessary to realize the full potential of high temperature or high power devices for markets ranging from industrial and consumer to military systems to transportation power and control. Integration requires that the entire device package, individual devices, contacts and interconnect materials, be ...

The III-V nitrides, (Al, In, Ga)N, are promising materials for high temperature, high power and high frequency devices due to the wide bandgaps, high electron saturation velocity and high electronic mobility transistor (HEMT) structures available in this alloy system. These devices would find wide-spread commercial use as power amplifiers in base station transmitters for personal communications ...

Next generation power electronic systems for military aircraft will require capacitors with reliable performance at temperatures from -55 up to 300 degrees C and beyond for filters, power converters and other control circuitry. Thin film integrated passive devices with lower dissipation and electrical leakage will also be needed, especially at high frequencies. Thin films have inherently high bre ...

GaN-based p-i-n photodiodes are in ideal choice for the Air Force's UV radiation measurements needs since these solid-state detectors are compact, light, and have low power consumption. However, current GaN photodiodes have much larger dark currents than expected. This Phase I program seeks to dramatically improve the current state of GaN photodiodes by employing low dislocation density epitaxia ...

The technique for accurately measuring the positions and orientations of targets in relation to a fixed reference is of fundamental importance to a number of military and commercial applications. For example, in the simulation experiments for testing of installed, integrated avionics, the configuration geometry data for hundreds of test assets, each having six-degree-of-freedom must be automatica ...

This Phase I SBIR will develop a general purpose probabilistic finite element analysis system, ProFEA, that allows designers to perform probabilistic finite element analysis in a graphical environment that is completely familiar and similar to modern deterministic FEA. We have developed an innovative architecture that takes advantage of emerging file exchange and database standards (I ...

The target and its computer representation plays a crucial role in ground-fixed weapon effectiveness analysis. Multiple weapon effects codes are utilized which operate at differing levels of fidelity and focus on differing aspects of the overall problem. Each code in turn has unique target model and interrogation needs. The target models are difficult to create directly and existing target mode ...

This work will investigate the feasibility of performing integrated cost/effectiveness analysis for Analysis of Alternatives (AOA) studies. The Modular Effectiveness/Vulnerability Assessment (MEVA) architecture will be adapted to support the various analysis elements required in AOA studies. The Phase I work will define the data types, data flow, and flow control required, along with the analysi ...

EPPI proposes to develop a test plan and design an experimental hardware testbed for discharging a cascaded Flux Compression Generator (FAG) pulser system in conjunction with explosively formed dynamic electrical connectors into an electrical load that meets the Munition Directorate's (AFRL/MN) requirements. Initial designs for compact seed and megajoule output FCGs are now being developed throug ...

Bends in waveguides are a problem for high-voltage Ultra-Wideband (UWB) systems. The difficulty arises because only a straight section of standard transmission line can support a pure TEM mode. And a pure TEM mode is necessary to preserve the risetime of the transmitted impulse. When there is a bend in the waveguide, the transmitted signal is a broader impulse than the incident signal. This ca ...