{"id":2966,"date":"2007-04-20T20:36:19","date_gmt":"2007-04-20T19:36:19","guid":{"rendered":"https:\/\/www.prueba.local\/lectura-de-tesis-doctoral-2\/"},"modified":"2021-02-01T10:35:13","modified_gmt":"2021-02-01T10:35:13","slug":"lectura-de-tesis-doctoral-2","status":"publish","type":"post","link":"https:\/\/www.iuma.ulpgc.es\/en\/lectura-de-tesis-doctoral-2\/","title":{"rendered":"Doctoral Thesis Reading"},"content":{"rendered":"

El pr\u00f3ximo viernes 4 de mayo, a las 12:00 horas tendr\u00e1 lugar  en la Sala de Telenseñanza la defensa de la Tesis Doctoral de Sunil Lalchand Khemchandani<\/strong>. Su trabajo lleva por t\u00edtulo "Diseño de circuitos integrados de RF para un receptor WLAN en la banda de 5 GHz sobre una tecnolog\u00eda de silicio de bajo coste<\/strong>" <\/p>\n

Este trabajo ha sido dirigido por Francisco Javier del Pino Su\u00e1rez y Antonio Hern\u00e1ndez Ballester. <\/p>\n

RESUMEN
<\/strong><\/p>\n

(Descargar PDF<\/a>)<\/font><\/p>\n


<\/strong>En esta tesis se ha realizado un estudio pormenorizado de un receptor para redes inal\u00e1mbricas seg\u00fan el est\u00e1ndar IEEE 802.11a. Para ello, primero se realiz\u00f3 un estudio del est\u00e1ndar, prestando especial atenci\u00f3n a la capa f\u00edsica del mismo. Se sigui\u00f3 con el estudio de distintas arquitecturas para el diseño del receptor eligiendo la de baja frecuencia intermedia por su sencillez diseño y baja sensibilidad al ruido flicker. El problema del rechazo de la frecuencia imagen se opt\u00f3 por resolverlo utilizando un filtro polif\u00e1sico.<\/p>\n

Para conseguir las especificaciones de los elementos a diseñar, se simul\u00f3 el sistema con ADS, comprobando que el receptor cumpl\u00eda todas las especificaciones del est\u00e1ndar. Una vez obtenidas las especificaciones de cada elemento se pas\u00f3 a diseñar cada uno, comenzando con el LNA. Realizado el estudio te\u00f3rico de los LNA, se pas\u00f3 al diseño de a nivel de layout de dos de ellos.<\/p>\n

Uno con configuraci\u00f3n cascodo y otro igual que el anterior, pero con configuraci\u00f3n doblada, consiguiendo rechazo en modo com\u00fan. Se continu\u00f3 con el diseño del mezclador de frecuencias. Una vez hecho su correspondiente estudio te\u00f3rico y clasificaci\u00f3n de las diversas topolog\u00edas, se pas\u00f3 al diseño de dos tipos de mezcladores activo y otro pasivo. Este \u00faltimo se pudo fabricar y medir, comprobando la similitud entre la medida y la simulaci\u00f3n.<\/p>\n

El siguiente paso fue el diseño, medida y fabricaci\u00f3n del VCO totalmente integrado, que es la parte m\u00e1s delicada del sintetizador. Se diseñ\u00f3, fabric\u00f3 y se midi\u00f3 mostrando el proceso de diseño y medida.<\/p>\n

Con el VCO medido se diseñaron, a nivel de transistores, los componentes m\u00e1s importantes del sintetizador, verificando el funcionamiento del mismo simul\u00e1ndolo con ADS.<\/p>\n

Se finaliz\u00f3 con el diseño del amplificador de FI y el filtro polif\u00e1sico. De este \u00faltimo se hizo un estudio te\u00f3rico explicando detalladamente el proceso de diseño. Para comprobar si los componentes diseñados se pueden utilizar en el receptor se volvi\u00f3 a simular el sistema, pero esta vez con las prestaciones obtenidas tras los diseños. Se comprob\u00f3 que la especificaci\u00f3n sensibilidad y ACR se cumpl\u00edan mientras que la de NACR y m\u00e1xima señal a la entrada no, debido principalmente al ruido de fase del VCO, teniendo que rediseñarlo.<\/p>\n

<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

El pr\u00f3ximo viernes 4 de mayo, a las 12:00 horas tendr\u00e1 lugar  en la Sala de Telenseñanza la defensa de la Tesis Doctoral de Sunil Lalchand Khemchandani. Su trabajo lleva por t\u00edtulo "Diseño de circuitos integrados de RF para un receptor WLAN en la banda de 5 GHz sobre una tecnolog\u00eda de silicio de bajo […]<\/p>\n","protected":false},"author":1,"featured_media":2207,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-2966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-recientes"],"yoast_head":"\nLectura de Tesis Doctoral - Instituto Universitario de Microelectr\u00f3nica Aplicada<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.iuma.ulpgc.es\/en\/lectura-de-tesis-doctoral-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lectura de Tesis Doctoral - Instituto Universitario de Microelectr\u00f3nica Aplicada\" \/>\n<meta property=\"og:description\" content=\"El pr\u00f3ximo viernes 4 de mayo, a las 12:00 horas tendr\u00e1 lugar  en la Sala de Telenseñanza la defensa de la Tesis Doctoral de Sunil Lalchand Khemchandani. 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