{"id":56982,"date":"2025-12-02T12:42:41","date_gmt":"2025-12-02T11:42:41","guid":{"rendered":"https:\/\/grupoalava.rearmachine.com\/producto\/sistemas-de-campo-proximo\/"},"modified":"2026-06-11T08:36:23","modified_gmt":"2026-06-11T06:36:23","slug":"sistemas-de-campo-proximo","status":"publish","type":"product","link":"https:\/\/grupoalava.rearmachine.com\/pt\/mra\/producto\/equipamento-de-teste-e-teste-e-medicao\/sistemas-de-campo-proximo\/","title":{"rendered":"Sistemas de campo pr\u00f3ximo"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:calc( 1250px + 30px );margin-left: calc(-30px \/ 2 );margin-right: calc(-30px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:15px;--awb-margin-bottom-large:20px;--awb-spacing-left-large:15px;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:15px;--awb-spacing-left-medium:15px;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:15px;--awb-spacing-left-small:15px;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">Uma medi\u00e7\u00e3o de campo pr\u00f3ximo <\/span><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">medi\u00e7\u00e3o de campo pr\u00f3ximo<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\"> \u00e9 normalmente implementado em interiores (<\/span><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">c\u00e2mara anec\u00f3ica<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">) e ocupa relativamente pouco espa\u00e7o quando comparado com um sistema de medi\u00e7\u00e3o de <\/span><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">campo distante ou compacto<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">.<\/span><\/p>\n<p><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">A opera\u00e7\u00e3o b\u00e1sica consiste em uma sonda de medi\u00e7\u00e3o que \u00e9 posicionada em pontos pr\u00f3ximos \u00e0 superf\u00edcie da antena em estudo, obtendo uma matriz de medidas de amplitude e fase em superf\u00edcies ao redor da antena (<\/span><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">campo pr\u00f3ximo<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">), que permite posteriormente, atrav\u00e9s de t\u00e9cnicas de processamento, saber como a antena se comportar\u00e1 tamb\u00e9m no <\/span><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">campo distante<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\"> bem como outros par\u00e2metros t\u00edpicos.<\/span><\/p>\n<p data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">As configura\u00e7\u00f5es mais comuns para este tipo de sistema s\u00e3o:<\/p>\n<ul>\n<li><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">Scanner plano:<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\"> Um posicionador X-Y \u00e9 respons\u00e1vel por efetuar medi\u00e7\u00f5es na superf\u00edcie de abertura da antena em teste.<\/span><\/li>\n<li><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">Esf\u00e9rica:<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\"> A antena em teste \u00e9 colocada num posicionador esf\u00e9rico, enquanto uma sonda de medi\u00e7\u00e3o (fixa) obt\u00e9m dados de medi\u00e7\u00e3o resultantes do movimento da antena em teste em tr\u00eas eixos angulares ortogonais.<\/span><\/li>\n<li><b data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\">Cil\u00edndrico:<\/b><span data-fusion-font=\"true\" style=\"font-size: 15px; line-height: 25px;\"> A antena em teste \u00e9 colocada sobre um eixo que gira angularmente enquanto uma sonda de medi\u00e7\u00e3o cujo deslocamento \u00e9 linear toma os valores de medi\u00e7\u00e3o correspondentes.<\/span><\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp;<\/p>\n<div class=\"mod mod4\">\n<div class=\"cont\">\n<div class=\"nbml\">\n<div class=\"mod mod4\">\n<div class=\"cont\">\n<div class=\"nbml\">\n<p>Um sistema de medi\u00e7\u00e3o de campo pr\u00f3ximo \u00e9 normalmente implementado no interior (c\u00e2mara anec\u00f3ica) e ocupa relativamente pouco espa\u00e7o em compara\u00e7\u00e3o com um sistema de campo distante ou compacto.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"featured_media":56983,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[7866,7867,8064],"product_tag":[8038,8066],"class_list":["post-56982","product","type-product","status-publish","has-post-thumbnail","product_cat-engenheiros","product_cat-equipamento-de-teste-e-teste-e-medicao","product_cat-dimensoes-da-antena","product_tag-ensaios-e-equipamentos-de-teste-e-medicao","product_tag-medicoes-de-antenas","first","instock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sistemas de campo pr\u00f3ximo - Grupo \u00c1lava<\/title>\n<meta name=\"description\" content=\"Um sistema de medi\u00e7\u00e3o de campo pr\u00f3ximo \u00e9 normalmente implementado num local fechado (c\u00e2mara 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