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Now showing items 31-40 of 225
Design of a leaky-wave antenna for 5G purposes using gap-waveguide technology
(2020-05-25)
A quasi-uniform leaky-wave antenna for 5G was designed at 39 GHz using the new holey EBG gap-waveguide structure. The antenna is designed for n260 band, with the
requirements that it is compact, low-cost and has high-power ...
Characterization of aluminum nitride thin films for micro and nanomechanical resonators
(2008)
This work presents the setup of a Physical Vapor Deposition by pulsed DC sputtering system and the characterization of aluminum nitride thin films deposited using the assembled system. The different parts of the system are ...
solar assisted air conditioning systemsSAACS
(2004)
This thesis investigates the problem of regulating the temperature of a conditioned space using a Solar Assisted Air Conditioning Systems (SAACS) prototype located at Cabo Rojo, Puerto Rico. The SAACS Prototype consists ...
Low-cost, low infrastructure x-band doppler radar development
(2011)
The Student Led Test Bed (STB) is part of the NSF Engineering Research Center CASA and is focused on developing and deploying low cost and low infrastructure weather radars to fill lower atmosphere gaps not covered by ...
On implementing time-frequency representations on hardware/software computational structures for sar applications
(2006)
Synthetic Aperture Radar (SAR) applications require that imaging systems be able to gather and process appropriate environmental information to aid in the process of effective decision making. This is the one major reason ...
Design and characterization of cavity-backed asymmetric annular ring slot antenna and UWB cavity-backed two-arm modified compound power-Archimedean slot spiral antenna for body centric wireless communications applications
(2015)
In this thesis, two types of slot antennas are studied, designed and characterized for the purpose of achieving Ultra-wideband (UWB) capabilities when in close proximity to the human body. The antennas are first designed ...
Modeling and simulation of point spread functions for advanced sar systems
(2004)
This work deals with the treatment of remotely sensed or sensory data in order to extract important information to the users. Sensory data are data collected from physical systems, by using sensors, such as the synthetic ...
Algoritmos de Dithering con tiempo de procesamiento reducido
(2016)
En esta investigación se trabajó con el algoritmo Pendiente Máxima (SD o Steepest Descent, por sus siglas en inglés) para hallar una señal de dither (señal aleatoria) que hace que el ruido de cuantización (diferencia entre ...
Design methodology for resource efficient implementation of fast fourier transform cores on field programmable gate arrays
(2012)
This thesis presents an efficient methodology for the hardware implementation of the Pease Fast Fourier Transform (FFT) radix-2 algorithm, in which, structural regularity from the Kronecker formulation is exploited to ...
A procedure to study the resiliency of the power system during extreme events
(2019-08-08)
In this thesis, a procedure for the study of resiliency of the power system during an extreme event or natural phenomenon (i.e. a hurricane) was designed. The main goal was to include a quantitative form/way from which the ...