Operador integral aplicado à caracterização espaço-temporal de antenas refletoras
In this work, it is developed a closed-formulation to calculate the radiated field by a perfectly conducting parabolic reflector antenna. This analytical solution is manipulated in time-domain in order to find equations to integral operator through the Geometrical Optics and the Aperture Method. Suc...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Brasil |
| Institución: | Universidade Federal de Minas Gerais (UFMG) |
| Repositorio: | Repositório Institucional da UFMG |
| Idioma: | portugués |
| OAI Identifier: | oai:repositorio.ufmg.br:1843/BUOS-ATLKYU |
| Acceso en línea: | http://hdl.handle.net/1843/BUOS-ATLKYU |
| Access Level: | acceso abierto |
| Palabra clave: | Método da abertura Ótica Análise espaço-temporal geometrica Operador integral Alimentador cosseno elevado modificado Antenas refletoras Operadores integrais Engenharia elétrica Análise de domínio temporal |
| Sumario: | In this work, it is developed a closed-formulation to calculate the radiated field by a perfectly conducting parabolic reflector antenna. This analytical solution is manipulated in time-domain in order to find equations to integral operator through the Geometrical Optics and the Aperture Method. Such operator, when associated to general sources by means of a temporal convolution, provides the field radiated by the antenna, such as to near field regions as to far field regions. In this calculation, it was employed the modified raised cosine feeder in order to obtain a generic formulation using any value for the n exponent. The obtained results also allow the analysis of transient phenomenons to different sources of temporal behaviour. Due to the high level of complexity in the integral calculation processes, it was used a commercial software associated to a packet with more than 6000 additional integration rules to solve the problem. |
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