{"id":76018,"date":"2018-03-09T23:21:23","date_gmt":"2018-03-09T23:21:23","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/techniques-of-analysis-and-design-of-shaped-refletor-antennas-for-space-and-earth-communications\/"},"modified":"2018-03-09T23:21:23","modified_gmt":"2018-03-09T23:21:23","slug":"techniques-of-analysis-and-design-of-shaped-refletor-antennas-for-space-and-earth-communications","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-tecnologicas\/techniques-of-analysis-and-design-of-shaped-refletor-antennas-for-space-and-earth-communications\/","title":{"rendered":"Techniques of analysis and design of shaped refletor antennas for space and earth communications."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jos\u00e9 Angel Mart\u00ednez Lorenzo <\/strong><\/h2>\n<p>La tesis trata sobre las t\u00e9cnicas de an\u00e1lisis y s\u00edntesis de reflectores conformados para comunicaciones espaciales y terrenales.  la primera parte de la tesis presenta el m\u00e9todo de optica f\u00edsica que se ha adoptado para analizar el comportamiento electromagn\u00e9tico de las antenas desarrolladas. La principal contribuci\u00f3n en este punto se concreta en el desarrollo del c\u00f3digo icara (induced current analysis of reflecor antennas).  a continuaci\u00f3n se presentan tres casos de s\u00edntesis de antenas reflectoras conformadas donde se han realizado diversas contribuciones.  la primera contribuci\u00f3n en s\u00edntesis consiste en un subreflector ajustable en tiempo real, que se ha desarrollado dentro de un proyecto de investigaci\u00f3n para la esa. La antena consiste en un raflector sobre de tipo confocal gragoriano para trabajar en la banda q\/v. Presenta un sistema de exploraci\u00f3n h\u00edbrido electr\u00f3nico-mec\u00e1nico, de manera que el ajuste del subreflector permite corregir las aberraciones de fase de la antena conformes se produce la exploraci\u00f3n del haz.  la segunda contribuci\u00f3n consiste en un reflector con simetr\u00eda de revoluci\u00f3n, de tipo hourglass, que proporciona haces sectoriales para el sistema lmds (local multipoint distribution system). La antena es reconfigurable, puediendo seleccionarse haces de distinto ancho en el plano horizontal. La s\u00edntesis de ha realizado combinando t\u00e9cnicas de optica geom\u00e9trica en el plano vertical para conseguri un diagrama cosecante cuadrado con s\u00edntesis de arrays alimentadores en el plano horizontal para conseguir un ancho de haz reconfigurable.  la tercera contribuci\u00f3n consiste en un reflector doble de tipo offset para comunicaciones por sat\u00e9lite a bordo de un tren. La principal dificultad de la antena estriba en las limitaciones de tama\u00f1o, especialmente de altura, y en la necesidad de que la antena pueda soportar los giros de polarizaci\u00f3n necesarios al desplazarse el tren sin deterioro de sus carcter\u00edsti<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Techniques of analysis and design of shaped refletor antennas for space and earth communications.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Techniques of analysis and design of shaped refletor antennas for space and earth communications. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jos\u00e9 Angel Mart\u00ednez Lorenzo <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Vigo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 26\/07\/2005<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Antonio Garc\u00eda Pino<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: fernando Las heras andr\u00e9s <\/li>\n<li> Del r\u00edo bocio Carlos (vocal)<\/li>\n<li> Ares pena Francisco Jos\u00e9 (vocal)<\/li>\n<li> Taboada varela Jos\u00e9 Manuel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jos\u00e9 Angel Mart\u00ednez Lorenzo La tesis trata sobre las t\u00e9cnicas de an\u00e1lisis y s\u00edntesis de reflectores conformados [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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