Award Data

Near-field frequency domain meaasurements of antennas over a planar aperture are commonly used to obtain far-field patterns. This technique has now bben formulation in the time domain, which is very desirable for short pulse signals. An additional benefit, particularly significant for antennas with low-sidelobes, arises from time domain measurements in that edge effects of a finite a ...

A methodology is proposed for introducing the capability of modeling active MMICs into the industry-standard three dimensional electromagnetic field simulator High Frequency Structure Simulator (HFSS) and Maxwell SI Eminence. The first objective of the proposed work is to evaluate the existing capabilities of HFSS/Eminence for characterizing the passive three dimensional interconnect problems as ...

Currently, most antenna array designs are mechanically steered. However, as demand for higher performance antennas increases, an electronic replacement for the mechanical system becomes necessary. An alternative that may prove to be more cost effective is to use ferrite patch antennas as the elements in the array. The antenna's radiation characteristics are controlled by the direction and magni ...

We propose a unique GaN-Al(sub x)Ga(sub 1-x)N heterojunction based CCD for imaging in the ultraviolet (wavelengths less than 365 nm). Our proposed device will be solid state, TTL compatible and in it's final configuration solar blind. The Phase I program is aimed at establishing the technical feasibility of our device concept. Our proposed CCD is in essence a GaN-AlGaN gated photoconductor with ...

This proposal describes new low cost, low risk semiconductor-based approaches to fuze trigger circuit technology. These innovative approaches build on the promising new technology platform developed by ARIA as part of earlier SBIR research. ARIA's technology platform, initially developed for driving extremely high speed (400 picosecond rise time), high peak current pulses (400A) through laser di ...

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The objective of the proposed program is to demonstrate the feasibility of applying Cast Metal Composite's unique pressure infiltration process to the production of lightweight, dimensionally stable, high thermal conductivity, high stiffness cyanate ester resin matrix composites for spacecraft subsystems and advanced thermal management systems. The low cost pressure infiltration process will be c ...

A concept for intelligent, multimedia computer-based training systems integrating intelligent agents with eye tracking and speech (ScanEval) is presented as a means of developing training systems that are more responsive, engaging, and motivating to trainees than current systems relying on more traditional user interface and pedagogical sequencing mechanisms. It is argued, based on published rese ...

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Integration/evaluation facilities such as the Integrated Defensive Avionics Laboratory (IDAL), ECIT/IFAST (Edwards AFB, AFEWES, REDCAP and PRIMES must support the development of EC systems on a real-time/non-intrusive basis. The complexity of today's EW systems require non-intrusive instrumentation for their development. This instrumentation must operate on a real-time basis so that the developm ...