{"id":1445,"date":"2012-02-01T11:11:19","date_gmt":"2012-02-01T11:11:19","guid":{"rendered":"http:\/\/www.raymaps.com\/?p=1445"},"modified":"2012-02-01T14:06:37","modified_gmt":"2012-02-01T14:06:37","slug":"e-field-of-a-dipole-antenna","status":"publish","type":"post","link":"https:\/\/www.raymaps.com\/index.php\/e-field-of-a-dipole-antenna\/","title":{"rendered":"E-field of a Dipole Antenna"},"content":{"rendered":"<p style=\"text-align: justify;\">In the previous post we plotted the E-field of a half wave dipole. We now turn our attention to higher antenna lengths such 1,1.5 and 2.0 times the wavelength. The E-field pattern is a three dimensional pattern, however, we only plot the E-field in a 2D plane along the axis of the dipole.<\/p>\n<figure id=\"attachment_1447\" aria-describedby=\"caption-attachment-1447\" style=\"width: 423px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.raymaps.com\/index.php\/e-field-of-a-dipole-antenna\/radiation_dipole\/\" rel=\"attachment wp-att-1447\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1447\" title=\"E-field of a Dipole\" src=\"http:\/\/www.raymaps.com\/wp-content\/uploads\/2012\/02\/radiation_dipole.jpg\" alt=\"E-field of a Dipole\" width=\"423\" height=\"393\" srcset=\"https:\/\/www.raymaps.com\/wp-content\/uploads\/2012\/02\/radiation_dipole.jpg 423w, https:\/\/www.raymaps.com\/wp-content\/uploads\/2012\/02\/radiation_dipole-300x278.jpg 300w\" sizes=\"auto, (max-width: 423px) 100vw, 423px\" \/><\/a><figcaption id=\"caption-attachment-1447\" class=\"wp-caption-text\">E-field of a Dipole<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">It is observed that as the antenna length is increased from 0.5*wavelength to 1.0*wavelength the antenna becomes more directional. However, as the length is further increased from 1.0*wavelength to 1.5*wavelength and 2.0*wavelength sidelobes begun to appear. These sidelobes are an unwanted phenomenon in a typical telecommunications application. When the antenna is placed vertically (shown horizontal in the above figure) it radiates uniformly along a horizontal plane and would provide coverage within a circular cell (not for 2.0*wavelength where there is no radiation at 90 degrees).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the previous post we plotted the E-field of a half wave dipole. We now turn our attention to higher antenna lengths such 1,1.5 and 2.0 times the wavelength. The E-field pattern is a three dimensional pattern, however, we only plot the E-field in a 2D plane along the axis of the dipole. It is observed that as the antenna length is increased from 0.5*wavelength to 1.0*wavelength the antenna becomes more directional. However, as the length is further increased from 1.0*wavelength to 1.5*wavelength and 2.0*wavelength sidelobes begun to appear. These sidelobes are an unwanted phenomenon in a typical telecommunications application. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[38,46],"class_list":["post-1445","post","type-post","status-publish","format-standard","hentry","category-ant","tag-antenna","tag-coverage"],"_links":{"self":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts\/1445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/comments?post=1445"}],"version-history":[{"count":11,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts\/1445\/revisions"}],"predecessor-version":[{"id":1460,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/posts\/1445\/revisions\/1460"}],"wp:attachment":[{"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/media?parent=1445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/categories?post=1445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.raymaps.com\/index.php\/wp-json\/wp\/v2\/tags?post=1445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}