Geracao E Modulacao Rf
Mostrando 1-2 de 2 artigos, teses e dissertações.
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1. Geração de sinais de RF por mistura de harmonicas de portadoras opticas moduladas em amplificadores opticos a semicondutor / RF signal generation by mixing harmonics of modulated optical carriers in semiconductor optical amplifiers
The gain-crossed properties of semiconductor optical amplifiers are experimentally investigated here. It was observed that optically feed-backed saturated amplifiers could achieve similar performance as that of cascaded amplifiers, offering up to 10 dB gain to two 8-nm-appart modulated optical carriers. Due to saturation the amplifier gain mechanism is alter
Publicado em: 2008
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2. Desenvolvimento de um tomógrafo de ressonância magnética: integração e otimização. / Development of a magnetic resonance tomograph: integration and improvement.
The present work describes the development of a Magnetic Resonance Tomography system to be used for medical diagnostics. It is based on commercially available subsystems such as used as in commercial MRI equipments. The main contributions to the project were: the development of fill up electronics and software needed to turn the acquired hardware into a MR T
Publicado em: 1995