{"id":8554,"date":"2026-03-02T08:49:29","date_gmt":"2026-03-02T08:49:29","guid":{"rendered":"https:\/\/wpu.edu.sy\/wpua\/?p=8554"},"modified":"2026-03-02T09:03:57","modified_gmt":"2026-03-02T09:03:57","slug":"improving-the-directivity-of-a-bi-cone-antenna-by-adding-a-director-systems","status":"publish","type":"post","link":"https:\/\/wpu.edu.sy\/wpua\/en\/improving-the-directivity-of-a-bi-cone-antenna-by-adding-a-director-systems\/","title":{"rendered":"Improving the Directivity of a Bi-Cone Antenna by Adding a Director Systems"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8554\" class=\"elementor elementor-8554\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b9b6319 e-con-full e-flex e-con e-parent\" data-id=\"b9b6319\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t<div 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src=\"https:\/\/wpu.edu.sy\/wpua\/wp-content\/uploads\/2026\/03\/wpu010326-8-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail wp-image-8550\" alt=\"\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\"> Dr. Abdoulmouen Ahmed Alrifai<\/h3><p class=\"elementor-image-box-description\">Faculty of Engineering - Communication Department\n - Al-Wataniya Private University -<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78fcf99 elementor-widget elementor-widget-spacer\" data-id=\"78fcf99\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d06d6fd elementor-widget elementor-widget-spacer\" data-id=\"d06d6fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cbbdf89 e-con-full e-flex e-con e-child\" data-id=\"cbbdf89\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3825cf7 elementor-widget elementor-widget-text-editor\" data-id=\"3825cf7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 18px;\"><strong>Abstract<\/strong> <\/span><\/p><p>\u2013 Bi-cone wire antennas belong to the category of broadband wire antennas. It has been observed that these antennas suffer from low directivity, which limits their use in some applications requiring high-directivity antennas. In this research, a new method was proposed based on modifying the geometric structure of the bi-cone antenna to increase the directivity by adding director systems with a specific geometric arrangement. The bi-cone antenna acts as an active element, and the added director systems act as passive elements. The use of the director systems increases the directivity of the traditional bi-cone antenna due to the narrowing of the main lobe of the radiation pattern of the proposed structure in the horizontal E-plane. The effect of using the proposed structure on the shape of the radiation pattern in the H-plane was also studied in terms of the uniformity of the radiation pattern. The numerical study was carried out using a program designed based on the integral equations method, which is considered the most accurate method for the numerical analysis of wire antennas in the case of thin wire approximation. The designed program was compared with the well-known and internationally approved MMANA program, and the results were completely identical, confirming the validity and accuracy of the designed program. The designed program provides great ease and flexibility when constructing the antenna and changing its geometric parameters compared to the MMANA program. The effect of changing the geometric parameters and the shape of the director systems on the frequency and radiation characteristics of the proposed antenna was studied in order to identify the governing parameters that determines its behavior. The article presents extensive and detailed numerical simulation results that demonstrate the superiority of the proposed antenna over the conventional antenna in terms of directivity while maintaining the characteristic of wide-band frequency.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-164a9cb elementor-widget elementor-widget-text-editor\" data-id=\"164a9cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Publisher :<\/strong>\u00a0<\/p><div class=\"sui-box-settings-slim-row sui-sm\"><div class=\"sui-box-settings-col-2\"><div class=\"sui-box-settings-slim-row sui-sm\"><div class=\"sui-box-settings-col-2\"><div class=\"sui-box-settings-slim-row sui-sm\">International Journal on Communications Antenna and Propagation (IRECAP)<\/div><div>-Q2-<\/div><\/div><\/div><\/div><\/div><div class=\"sui-box-settings-slim-row sui-sm\"><div class=\"sui-box-settings-col-2\"><div class=\"sui-box-settings-slim-row sui-sm\"><div class=\"sui-box-settings-col-2\"><div class=\"sui-box-settings-slim-row sui-sm\"><div class=\"sui-box-settings-col-1\">\u00a0<\/div><\/div><\/div><\/div><\/div><\/div><p><strong>Research Link\u00a0 \u00a0:\u00a0<\/strong><\/p><p><em><strong><a href=\"https:\/\/www.praiseworthyprize.org\/jsm\/index.php?journal=irecap&amp;page=article&amp;op=view&amp;path=28029\">Click Here To View\u00a0<\/a><\/strong><\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-787fac4 e-con-full e-flex e-con e-parent\" data-id=\"787fac4\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t<div class=\"elementor-element elementor-element-0c3b902 e-con-full e-flex e-con e-child\" data-id=\"0c3b902\" 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data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Al-Wataniya Private University<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3827bf4 elementor-widget elementor-widget-text-editor\" data-id=\"3827bf4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>It was established in 2007 and includes six colleges:<\/strong><\/p><ul><li><span style=\"color: #993300;\"><a style=\"color: #993300;\" href=\"https:\/\/wpu.edu.sy\/%d9%83%d9%84%d9%8a%d8%a9-%d8%b7%d8%a8-%d8%a7%d9%84%d8%a3%d8%b3%d9%86%d8%a7%d9%86\/\">Faculty of Dentistry<\/a><\/span><\/li><li><span style=\"color: #993300;\"><a style=\"color: #993300;\" href=\"https:\/\/wpu.edu.sy\/%d9%83%d9%84%d9%8a%d8%a9-%d8%a7%d9%84%d8%b5%d9%8a%d8%af%d9%84%d8%a9\/\">Faculty of Pharmacy<\/a><\/span><\/li><li><span style=\"color: #993300;\"><a style=\"color: #993300;\" href=\"https:\/\/wpu.edu.sy\/%d9%83%d9%84%d9%8a%d8%a9-%d8%a7%d9%84%d9%87%d9%86%d8%af%d8%b3%d8%a9\/\">Faculty of Engineering (Informatics and Communications)<\/a><\/span><\/li><li><span style=\"color: #993300;\"><a style=\"color: #993300;\" href=\"https:\/\/wpu.edu.sy\/%d9%83%d9%84%d9%8a%d8%a9-%d8%a7%d9%84%d9%87%d9%86%d8%af%d8%b3%d8%a9\/\">Faculty of Civil Engineering<\/a><\/span><\/li><li><span style=\"color: #993300;\"><a style=\"color: #993300;\" href=\"https:\/\/wpu.edu.sy\/%d9%83%d9%84%d9%8a%d8%a9-%d8%a7%d9%84%d8%b9%d9%85%d8%a7%d8%b1%d8%a9\/\">Faculty of Architecture and Urban Planning<\/a><\/span><\/li><li><span style=\"color: #993300;\"><a style=\"color: #993300;\" href=\"https:\/\/wpu.edu.sy\/%d9%83%d9%84%d9%8a%d8%a9-%d8%a7%d9%84%d8%a5%d8%af%d8%a7%d8%b1%d8%a9\/\">Faculty of Administrative and Financial Sciences<\/a><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b28fd20 e-con-full e-flex e-con e-child\" data-id=\"b28fd20\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e97868e elementor-widget elementor-widget-heading\" data-id=\"e97868e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Related sites:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5bbc97 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"f5bbc97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/wpu.edu.sy\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-wordpress\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M61.7 169.4l101.5 278C92.2 413 43.3 340.2 43.3 256c0-30.9 6.6-60.1 18.4-86.6zm337.9 75.9c0-26.3-9.4-44.5-17.5-58.7-10.8-17.5-20.9-32.4-20.9-49.9 0-19.6 14.8-37.8 35.7-37.8.9 0 1.8.1 2.8.2-37.9-34.7-88.3-55.9-143.7-55.9-74.3 0-139.7 38.1-177.8 95.9 5 .2 9.7.3 13.7.3 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l77.5 230.4L249.8 247l-33.1-90.8c-11.5-.7-22.3-2-22.3-2-11.5-.7-10.1-18.2 1.3-17.5 0 0 35.1 2.7 56 2.7 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l76.9 228.7 21.2-70.9c9-29.4 16-50.5 16-68.7zm-139.9 29.3l-63.8 185.5c19.1 5.6 39.2 8.7 60.1 8.7 24.8 0 48.5-4.3 70.6-12.1-.6-.9-1.1-1.9-1.5-2.9l-65.4-179.2zm183-120.7c.9 6.8 1.4 14 1.4 21.9 0 21.6-4 45.8-16.2 76.2l-65 187.9C426.2 403 468.7 334.5 468.7 256c0-37-9.4-71.8-26-102.1zM504 256c0 136.8-111.3 248-248 248C119.2 504 8 392.7 8 256 8 119.2 119.2 8 256 8c136.7 0 248 111.2 248 248zm-11.4 0c0-130.5-106.2-236.6-236.6-236.6C125.5 19.4 19.4 125.5 19.4 256S125.6 492.6 256 492.6c130.5 0 236.6-106.1 236.6-236.6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Al-Wataniya  Private University website<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/library.wpu.edu.sy\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-wordpress\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M61.7 169.4l101.5 278C92.2 413 43.3 340.2 43.3 256c0-30.9 6.6-60.1 18.4-86.6zm337.9 75.9c0-26.3-9.4-44.5-17.5-58.7-10.8-17.5-20.9-32.4-20.9-49.9 0-19.6 14.8-37.8 35.7-37.8.9 0 1.8.1 2.8.2-37.9-34.7-88.3-55.9-143.7-55.9-74.3 0-139.7 38.1-177.8 95.9 5 .2 9.7.3 13.7.3 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l77.5 230.4L249.8 247l-33.1-90.8c-11.5-.7-22.3-2-22.3-2-11.5-.7-10.1-18.2 1.3-17.5 0 0 35.1 2.7 56 2.7 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l76.9 228.7 21.2-70.9c9-29.4 16-50.5 16-68.7zm-139.9 29.3l-63.8 185.5c19.1 5.6 39.2 8.7 60.1 8.7 24.8 0 48.5-4.3 70.6-12.1-.6-.9-1.1-1.9-1.5-2.9l-65.4-179.2zm183-120.7c.9 6.8 1.4 14 1.4 21.9 0 21.6-4 45.8-16.2 76.2l-65 187.9C426.2 403 468.7 334.5 468.7 256c0-37-9.4-71.8-26-102.1zM504 256c0 136.8-111.3 248-248 248C119.2 504 8 392.7 8 256 8 119.2 119.2 8 256 8c136.7 0 248 111.2 248 248zm-11.4 0c0-130.5-106.2-236.6-236.6-236.6C125.5 19.4 19.4 125.5 19.4 256S125.6 492.6 256 492.6c130.5 0 236.6-106.1 236.6-236.6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Al-Wataniya Private University Digital Library website<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wpu.edu.sy\/wpua\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-wordpress\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M61.7 169.4l101.5 278C92.2 413 43.3 340.2 43.3 256c0-30.9 6.6-60.1 18.4-86.6zm337.9 75.9c0-26.3-9.4-44.5-17.5-58.7-10.8-17.5-20.9-32.4-20.9-49.9 0-19.6 14.8-37.8 35.7-37.8.9 0 1.8.1 2.8.2-37.9-34.7-88.3-55.9-143.7-55.9-74.3 0-139.7 38.1-177.8 95.9 5 .2 9.7.3 13.7.3 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l77.5 230.4L249.8 247l-33.1-90.8c-11.5-.7-22.3-2-22.3-2-11.5-.7-10.1-18.2 1.3-17.5 0 0 35.1 2.7 56 2.7 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l76.9 228.7 21.2-70.9c9-29.4 16-50.5 16-68.7zm-139.9 29.3l-63.8 185.5c19.1 5.6 39.2 8.7 60.1 8.7 24.8 0 48.5-4.3 70.6-12.1-.6-.9-1.1-1.9-1.5-2.9l-65.4-179.2zm183-120.7c.9 6.8 1.4 14 1.4 21.9 0 21.6-4 45.8-16.2 76.2l-65 187.9C426.2 403 468.7 334.5 468.7 256c0-37-9.4-71.8-26-102.1zM504 256c0 136.8-111.3 248-248 248C119.2 504 8 392.7 8 256 8 119.2 119.2 8 256 8c136.7 0 248 111.2 248 248zm-11.4 0c0-130.5-106.2-236.6-236.6-236.6C125.5 19.4 19.4 125.5 19.4 256S125.6 492.6 256 492.6c130.5 0 236.6-106.1 236.6-236.6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Al-Wataniya Private University Academic Oasis website<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wpu.edu.sy\/wpus\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-wordpress\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M61.7 169.4l101.5 278C92.2 413 43.3 340.2 43.3 256c0-30.9 6.6-60.1 18.4-86.6zm337.9 75.9c0-26.3-9.4-44.5-17.5-58.7-10.8-17.5-20.9-32.4-20.9-49.9 0-19.6 14.8-37.8 35.7-37.8.9 0 1.8.1 2.8.2-37.9-34.7-88.3-55.9-143.7-55.9-74.3 0-139.7 38.1-177.8 95.9 5 .2 9.7.3 13.7.3 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l77.5 230.4L249.8 247l-33.1-90.8c-11.5-.7-22.3-2-22.3-2-11.5-.7-10.1-18.2 1.3-17.5 0 0 35.1 2.7 56 2.7 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l76.9 228.7 21.2-70.9c9-29.4 16-50.5 16-68.7zm-139.9 29.3l-63.8 185.5c19.1 5.6 39.2 8.7 60.1 8.7 24.8 0 48.5-4.3 70.6-12.1-.6-.9-1.1-1.9-1.5-2.9l-65.4-179.2zm183-120.7c.9 6.8 1.4 14 1.4 21.9 0 21.6-4 45.8-16.2 76.2l-65 187.9C426.2 403 468.7 334.5 468.7 256c0-37-9.4-71.8-26-102.1zM504 256c0 136.8-111.3 248-248 248C119.2 504 8 392.7 8 256 8 119.2 119.2 8 256 8c136.7 0 248 111.2 248 248zm-11.4 0c0-130.5-106.2-236.6-236.6-236.6C125.5 19.4 19.4 125.5 19.4 256S125.6 492.6 256 492.6c130.5 0 236.6-106.1 236.6-236.6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Al-Waha student website of Al-Wataniya Private University<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wpu.edu.sy\/wpus\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-wordpress\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M61.7 169.4l101.5 278C92.2 413 43.3 340.2 43.3 256c0-30.9 6.6-60.1 18.4-86.6zm337.9 75.9c0-26.3-9.4-44.5-17.5-58.7-10.8-17.5-20.9-32.4-20.9-49.9 0-19.6 14.8-37.8 35.7-37.8.9 0 1.8.1 2.8.2-37.9-34.7-88.3-55.9-143.7-55.9-74.3 0-139.7 38.1-177.8 95.9 5 .2 9.7.3 13.7.3 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l77.5 230.4L249.8 247l-33.1-90.8c-11.5-.7-22.3-2-22.3-2-11.5-.7-10.1-18.2 1.3-17.5 0 0 35.1 2.7 56 2.7 22.2 0 56.7-2.7 56.7-2.7 11.5-.7 12.8 16.2 1.4 17.5 0 0-11.5 1.3-24.3 2l76.9 228.7 21.2-70.9c9-29.4 16-50.5 16-68.7zm-139.9 29.3l-63.8 185.5c19.1 5.6 39.2 8.7 60.1 8.7 24.8 0 48.5-4.3 70.6-12.1-.6-.9-1.1-1.9-1.5-2.9l-65.4-179.2zm183-120.7c.9 6.8 1.4 14 1.4 21.9 0 21.6-4 45.8-16.2 76.2l-65 187.9C426.2 403 468.7 334.5 468.7 256c0-37-9.4-71.8-26-102.1zM504 256c0 136.8-111.3 248-248 248C119.2 504 8 392.7 8 256 8 119.2 119.2 8 256 8c136.7 0 248 111.2 248 248zm-11.4 0c0-130.5-106.2-236.6-236.6-236.6C125.5 19.4 19.4 125.5 19.4 256S125.6 492.6 256 492.6c130.5 0 236.6-106.1 236.6-236.6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Student portal website<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-eac33e3 e-con-full e-flex e-con e-child\" data-id=\"eac33e3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b409b67 elementor-widget elementor-widget-heading\" data-id=\"b409b67\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">for communication:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d0d0ee1 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"d0d0ee1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-map-marker-alt\" viewBox=\"0 0 384 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M172.268 501.67C26.97 291.031 0 269.413 0 192 0 85.961 85.961 0 192 0s192 85.961 192 192c0 77.413-26.97 99.031-172.268 309.67-9.535 13.774-29.93 13.773-39.464 0zM192 272c44.183 0 80-35.817 80-80s-35.817-80-80-80-80 35.817-80 80 35.817 80 80 80z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Syria - Hama Governorate - International Road Homs-Hama<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-phone\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M493.4 24.6l-104-24c-11.3-2.6-22.9 3.3-27.5 13.9l-48 112c-4.2 9.8-1.4 21.3 6.9 28l60.6 49.6c-36 76.7-98.9 140.5-177.2 177.2l-49.6-60.6c-6.8-8.3-18.2-11.1-28-6.9l-112 48C3.9 366.5-2 378.1.6 389.4l24 104C27.1 504.2 36.7 512 48 512c256.1 0 464-207.5 464-464 0-11.2-7.7-20.9-18.6-23.4z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">0096334589094<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-phone\" viewBox=\"0 0 512 512\" 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data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Implementing website management at the National Private University 2025<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Abstract \u2013 Bi-cone wire antennas belong to the category of broadband wire antennas. It has been observed that these antennas suffer from low directivity, which limits their use in some applications requiring high-directivity antennas. In this research, a new method was proposed based on modifying the geometric structure of the bi-cone antenna to increase the directivity by adding director systems with a specific geometric arrangement. The bi-cone antenna acts as an active element, and the added director systems act as passive elements. The use of the director systems increases the directivity of the traditional bi-cone antenna due to the narrowing of the main lobe of the radiation pattern of the proposed structure in the horizontal E-plane. The effect of using the proposed structure on the shape of the radiation pattern in the H-plane was also studied in terms of the uniformity of the radiation pattern. The numerical study was carried out using a program designed based on the integral equations method, which is considered the most accurate method for the numerical analysis of wire antennas in the case of thin wire approximation. The designed program was compared with the well-known and internationally approved MMANA program, and the results were completely identical, confirming the validity and accuracy of the designed program. The designed program provides great ease and flexibility when constructing the antenna and changing its geometric parameters compared to the MMANA program. The effect of changing the geometric parameters and the shape of the director systems on the frequency and radiation characteristics of the proposed antenna was studied in order to identify the governing parameters that determines its behavior. The article presents extensive and detailed numerical simulation results that demonstrate the superiority of the proposed antenna over the conventional antenna in terms of directivity while maintaining the characteristic of wide-band frequency.<\/p>\n","protected":false},"author":1,"featured_media":8555,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_canvas","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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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