{"id":242,"date":"2012-11-16T21:44:24","date_gmt":"2012-11-16T23:44:24","guid":{"rendered":"http:\/\/efagundes.com\/openclass_networking\/?page_id=242"},"modified":"2022-01-16T17:50:08","modified_gmt":"2022-01-16T20:50:08","slug":"sinais-limitados-pela-largura-de-banda-ii","status":"publish","type":"page","link":"https:\/\/efagundes.com\/networking\/teoria-da-transmissao-e-meios-magneticos\/sinais-limitados-pela-largura-de-banda-ii\/","title":{"rendered":"Sinais limitados pela largura de banda (II)"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide42.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"2391\" data-permalink=\"https:\/\/efagundes.com\/networking\/teoria-da-transmissao-e-meios-magneticos\/sinais-limitados-pela-largura-de-banda-ii\/slide4-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide42.jpg?fit=960%2C720&amp;ssl=1\" data-orig-size=\"960,720\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Slide4\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide42.jpg?fit=960%2C720&amp;ssl=1\" class=\"alignnone size-full wp-image-2391\" src=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide42.jpg?resize=960%2C720\" alt=\"Slide4\" width=\"960\" height=\"720\" srcset=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide42.jpg?w=960&amp;ssl=1 960w, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide42.jpg?resize=300%2C225&amp;ssl=1 300w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":533,"menu_order":2,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-242","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P8yKGp-3U","jetpack-related-posts":[{"id":240,"url":"https:\/\/efagundes.com\/networking\/teoria-da-transmissao-e-meios-magneticos\/sinais-limitados-pela-largura-de-banda-i\/","url_meta":{"origin":242,"position":0},"title":"Sinais limitados pela largura de banda (I)","author":"Eduardo Fagundes","date":"16\/11\/2012","format":false,"excerpt":"Nenhum recurso de transmiss\u00e3o \u00e9 capaz de transmitir sinais sem perder parte da energia no processo. Se todos os coeficientes da s\u00e9rie de Fourier fossem igualmente reduzidos, o sinal resultante seria reduzido em amplitude, mas n\u00e3o seria distorcido. Entretanto, todos os meios de transmiss\u00e3o reduzem os componentes de Fourier ocasionando\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide3","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide32.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide32.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide32.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide32.jpg?resize=700%2C400 2x"},"classes":[]},{"id":335,"url":"https:\/\/efagundes.com\/networking\/transmissao-sem-fio\/o-espectro-eletromagnetico-ii\/","url_meta":{"origin":242,"position":1},"title":"O espectro eletromagn\u00e9tico (II)","author":"Eduardo Fagundes","date":"16\/11\/2012","format":false,"excerpt":"\u00a0 A quantidade de informa\u00e7\u00e3o que uma onda eletromagn\u00e9tica pode transportar \u00e9 relacionada \u00e0 sua largura de banda. Com a tecnologia atual, \u00e9 poss\u00edvel codificar alguns bits por Hz em frequ\u00eancias baixas, mas em altas frequ\u00eancias pode-se codificar cerca de 40 bits, assim, um cabo de 500MHz transporta v\u00e1rios gigabits\/s.\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide4","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide43.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide43.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide43.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide43.jpg?resize=700%2C400 2x"},"classes":[]},{"id":255,"url":"https:\/\/efagundes.com\/networking\/teoria-da-transmissao-e-meios-magneticos\/taxa-de-dados-maxima-de-um-canal-ii\/","url_meta":{"origin":242,"position":2},"title":"Taxa de dados m\u00e1xima de um canal (II)","author":"Eduardo Fagundes","date":"16\/11\/2012","format":false,"excerpt":"\u00a0 Todos os canais de transmiss\u00e3o de qualquer interesse pr\u00e1tico tem uma largura de banda de frequ\u00eancia limitada. As limita\u00e7\u00f5es surgem das propriedades f\u00edsicas do canal ou de limita\u00e7\u00f5es deliberadas na largura de banda para evitar interfer\u00eancia de outras fontes. Principalmente por raz\u00f5es econ\u00f4micas, a maioria dos sistemas de comunica\u00e7\u00e3o\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide9","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide92.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide92.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide92.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide92.jpg?resize=700%2C400 2x"},"classes":[]},{"id":791,"url":"https:\/\/efagundes.com\/networking\/algoritmos-de-roteamento\/servicos-integrados-rsvp-the-reservation-protocol-2\/","url_meta":{"origin":242,"position":3},"title":"RSVP The ReSerVation Protocol (II)","author":"Eduardo Fagundes","date":"18\/11\/2012","format":false,"excerpt":"Para obter uma melhor recep\u00e7\u00e3o e eliminar o congestionamento, qualquer um dos receptores de um grupo pode enviar uma mensagem de reserva pela \u00e1rvore para o transmissor. A mensagem \u00e9 propagada com a utiliza\u00e7\u00e3o do algoritmo de encaminhamento pelo caminho inverso. Em cada hop, o roteador detecta a reserva e\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide352.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide352.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide352.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide352.jpg?resize=700%2C400 2x"},"classes":[]},{"id":75,"url":"https:\/\/efagundes.com\/networking\/hardware-de-rede\/ethernet-em-par-trancado\/","url_meta":{"origin":242,"position":4},"title":"Ethernet em par-tran\u00e7ado","author":"Eduardo Fagundes","date":"16\/11\/2012","format":false,"excerpt":"O cabo de par tran\u00e7ado \u00e9 composto por pares de fios, sendo que cada par \u00e9 isolado do outro e todos s\u00e3o tran\u00e7ados juntos dentro de uma cobertura externa. N\u00e3o h\u00e1 uma blindagem f\u00edsica na cabo UTP; ele obt\u00e9m sua prote\u00e7\u00e3o pelo efeito de cancelamento m\u00fatuo dos campos eletromagn\u00e9ticos devido\u2026","rel":"","context":"Post similar","block_context":{"text":"Post similar","link":""},"img":{"alt_text":"Slide12","src":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide12.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide12.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide12.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide12.jpg?resize=700%2C400 2x"},"classes":[]},{"id":73,"url":"https:\/\/efagundes.com\/networking\/hardware-de-rede\/internet-em-cabo-coaxial\/","url_meta":{"origin":242,"position":5},"title":"Internet em cabo coaxial","author":"Eduardo Fagundes","date":"16\/11\/2012","format":false,"excerpt":"O cabo coaxial consiste em um fio de cobre esticado na parte central envolvido por material isolante. 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