{"id":2015,"date":"2019-12-08T15:13:08","date_gmt":"2019-12-08T14:13:08","guid":{"rendered":"https:\/\/www.electronic-service.de\/electronic-service-wp\/products\/absorber\/cavity-absorber\/"},"modified":"2026-07-20T11:43:31","modified_gmt":"2026-07-20T09:43:31","slug":"cavity-absorbers","status":"publish","type":"page","link":"https:\/\/www.electronic-service.de\/en\/products\/hf-absorber\/cavity-absorbers\/","title":{"rendered":"Cavity Absorber"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1jb5iev-3d7093dfb9502ad8e322f8627846277a\">\n.avia-section.av-k1jb5iev-3d7093dfb9502ad8e322f8627846277a{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/10\/ES-Absorber_Pyramidenabsorber.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-k1jb5iev-3d7093dfb9502ad8e322f8627846277a main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  av-mini-hide avia-full-stretch avia-bg-style-scroll av-minimum-height av-minimum-height-custom av-height-custom  container_wrap sidebar_right'  data-section-bg-repeat='stretch' data-av_minimum_height_px='280'><div class='container av-section-cont-open' style='height:280px'><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-2015'><div class='entry-content-wrapper clearfix'>\n<section  class='av_textblock_section av-mk20ags1-264ddc64f868621b0b066e3ba0da3c1c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"font-size: 34px; line-height: 1.1rem; color: #004687; font-weight: 300 !important;\">CAVITY ABSORBER<\/p>\n<\/div><\/section>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1jb5iev-13-d911d30e5a9085e86e39cea9126a0ef6\">\n.avia-section.av-k1jb5iev-13-d911d30e5a9085e86e39cea9126a0ef6{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/10\/ES-Absorber_Pyramidenabsorber.jpg);\nbackground-position:100% 50%;\nbackground-attachment:scroll;\n}\n.avia-section.av-k1jb5iev-13-d911d30e5a9085e86e39cea9126a0ef6 .av-section-color-overlay{\nopacity:0.6;\nbackground-color:#ffffff;\n}\n<\/style>\n<div id='av_section_2'  class='avia-section av-k1jb5iev-13-d911d30e5a9085e86e39cea9126a0ef6 main_color avia-section-small avia-no-border-styling  avia-builder-el-2  el_after_av_section  el_before_av_one_full  av-desktop-hide av-medium-hide av-small-hide avia-full-stretch avia-bg-style-scroll av-section-color-overlay-active av-minimum-height av-minimum-height-custom av-height-custom  container_wrap sidebar_right'  data-section-bg-repeat='stretch' data-av_minimum_height_px='120'><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><div class='container av-section-cont-open' style='height:120px'><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-2015'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4tikncv-4783c663cdae9351ed528abcba91cde7\">\n#top .av_textblock_section.av-m4tikncv-4783c663cdae9351ed528abcba91cde7 .avia_textblock{\nfont-size:24px;\ncolor:#004687;\ntext-align:center;\n}\n<\/style>\n<section  class='av_textblock_section av-m4tikncv-4783c663cdae9351ed528abcba91cde7 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock mobile-title av_inherit_color'  itemprop=\"text\" ><p>CAVITY ABSORBER<\/p>\n<\/div><\/section>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><\/div><div id='after_section_2'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-2015'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-9199d-ddb1a74d9efa5f4bb9fead4e2ae0865e\">\n.flex_column.av-9199d-ddb1a74d9efa5f4bb9fead4e2ae0865e{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-9199d-ddb1a74d9efa5f4bb9fead4e2ae0865e av_one_full  avia-builder-el-4  el_after_av_section  el_before_av_hr  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8ym29-8ce9c5183757db7ca4296fbba22f6f33\">\n#top .av-special-heading.av-8ym29-8ce9c5183757db7ca4296fbba22f6f33{\nmargin:20px 0 0 0;\npadding-bottom:10px;\ncolor:#004687;\n}\nbody .av-special-heading.av-8ym29-8ce9c5183757db7ca4296fbba22f6f33 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-8ym29-8ce9c5183757db7ca4296fbba22f6f33 .special-heading-inner-border{\nborder-color:#004687;\n}\n.av-special-heading.av-8ym29-8ce9c5183757db7ca4296fbba22f6f33 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 768px) and (max-width: 989px){ \n#top #wrap_all .av-special-heading.av-8ym29-8ce9c5183757db7ca4296fbba22f6f33 .av-special-heading-tag{\nfont-size:28px;\n}\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-8ym29-8ce9c5183757db7ca4296fbba22f6f33 .av-special-heading-tag{\nfont-size:28px;\n}\n}\n<\/style>\n<div  class='av-special-heading av-8ym29-8ce9c5183757db7ca4296fbba22f6f33 av-special-heading-h1 custom-color-heading blockquote modern-quote  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first  av-linked-heading'><h1 class='av-special-heading-tag'  itemprop=\"headline\"  >Cavity Absorbers for Electromagnetic Shielding in Cavities <\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-typx-16570e409f832c6f128210ed7ea15de7 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Cavity absorbers are specialized <a href=\"https:\/\/www.electronic-service.de\/en\/products\/hf-absorber\/\"><u>RF absorbers<\/u><\/a> designed for use in enclosed systems. They are used to selectively attenuate electromagnetic waves within cavities in order to minimize reflections and resonances. They prevent disruptive interference, particularly in applications involving radar technology, satellite communications, and electromagnetic compatibility (EMC) testing.<\/p>\n<p>Unlike <a href=\"https:\/\/www.electronic-service.de\/en\/products\/hf-absorber\/broadband-absorbers\/\"><u>broadband flat absorbers<\/u><\/a> or <a href=\"https:\/\/www.electronic-service.de\/en\/products\/hf-absorber\/narrow-band-absorbers\/\"><u>narrowband flat absorbers<\/u><\/a> , cavity absorbers are not primarily used on flat surfaces, but rather in three-dimensional structures such as housings, measurement setups, or antenna components. Their design and material composition enable effective absorption even in spatially confined environments.<\/p>\n<p>E.S. Electronic Service GmbH offers cavity absorbers tailored to different frequency ranges and geometric requirements.<\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1khpjff-d558012bdc4b457d98e509bc3c8a34d3\">\n#top .hr.hr-invisible.av-k1khpjff-d558012bdc4b457d98e509bc3c8a34d3{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-k1khpjff-d558012bdc4b457d98e509bc3c8a34d3 hr-invisible  avia-builder-el-7  el_after_av_one_full  el_before_av_one_full '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-9199d-12-41d4755a531d43b3668f736901a1ee1e\">\n.flex_column.av-9199d-12-41d4755a531d43b3668f736901a1ee1e{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\nbackground-color:#2c76ae;\n}\n<\/style>\n<div  class='flex_column av-9199d-12-41d4755a531d43b3668f736901a1ee1e av_one_full  avia-builder-el-8  el_after_av_hr  el_before_av_table  first flex_column_div av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-typx-11-ef74fa64c99beb5bb9835ce610d6a3a5\">\n#top .av_textblock_section.av-typx-11-ef74fa64c99beb5bb9835ce610d6a3a5 .avia_textblock{\ncolor:#ffffff;\n}\n<\/style>\n<section  class='av_textblock_section av-typx-11-ef74fa64c99beb5bb9835ce610d6a3a5 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p style=\"text-align: center;\">CAVITY ABSORBER<\/p>\n<\/div><\/section><\/div>\n<div class='avia-data-table-wrap av-62oy2x-f798f9d515e917e7e532203c57b7c994 avia_scrollable_table avia-table-1'><table  class='avia-table avia-data-table avia_pricing_default  avia-builder-el-10  el_after_av_one_full  el_before_av_hr '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Table\" ><tbody><tr class=''><th class='avia-desc-col'><\/th><td class=''>Basic material<\/td><td class=''>Use temperature (\u00b0C)<\/td><td class=''>Frequency range<\/td><td class=''>Technical data sheets<\/td><\/tr><tr class=''><th class='avia-desc-col'>esorb SLA<\/th><td class=''>Urethane<\/td><td class=''>90 C\u00b0<\/td><td class=''>1 GHz<\/td><td class=''>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1ki7a5x-db54b834884b1c6cee4acba0ac1493b6\">\n.av_font_icon.av-k1ki7a5x-db54b834884b1c6cee4acba0ac1493b6{\ncolor:#333333;\nborder-color:#333333;\n}\n.av_font_icon.av-k1ki7a5x-db54b834884b1c6cee4acba0ac1493b6 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-k1ki7a5x-db54b834884b1c6cee4acba0ac1493b6 avia_animate_when_visible av-icon-style- avia-icon-pos-center avia-icon-animate'><a href='https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/11\/ES-Electronic-Service-Datenblatt-ESORB-SLA.pdf'   class='av-icon-char' aria-hidden='true' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' data-avia-icon-tooltip=\"&lt;br \/&gt;\nDownload Data Sheet&lt;br \/&gt;\n\"><\/a><\/span><\/td><\/tr><tr class=''><th class='avia-desc-col'>esorb EA6<\/th><td class=''>Polyurethane<\/td><td class=''>-46 C\u00b0 to +120 C\u00b0<\/td><td class=''>79 GHz<\/td><td class=''>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1ki7a5x-8-4fc520c3646e9a24575d2e77954b90df\">\n.av_font_icon.av-k1ki7a5x-8-4fc520c3646e9a24575d2e77954b90df{\ncolor:#333333;\nborder-color:#333333;\n}\n.av_font_icon.av-k1ki7a5x-8-4fc520c3646e9a24575d2e77954b90df .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-k1ki7a5x-8-4fc520c3646e9a24575d2e77954b90df avia_animate_when_visible av-icon-style- avia-icon-pos-center avia-icon-animate'><a href='https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/11\/ES-Electronic-Service-Datenblatt-ESORB-EA-6.pdf'   class='av-icon-char' aria-hidden='true' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' data-avia-icon-tooltip=\"&lt;br \/&gt;\nDownload Data Sheet&lt;br \/&gt;\n\"><\/a><\/span><\/td><\/tr><tr class=''><th class='avia-desc-col'>esorb EA6-S<\/th><td class=''>Silicone<\/td><td class=''>-40 C\u00b0 to +170 C\u00b0<\/td><td class=''>79 GHz<\/td><td class=''>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1ki7a5x-7-08991e3b216e05ff59385552f642808e\">\n.av_font_icon.av-k1ki7a5x-7-08991e3b216e05ff59385552f642808e{\ncolor:#333333;\nborder-color:#333333;\n}\n.av_font_icon.av-k1ki7a5x-7-08991e3b216e05ff59385552f642808e .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-k1ki7a5x-7-08991e3b216e05ff59385552f642808e avia_animate_when_visible av-icon-style- avia-icon-pos-center avia-icon-animate'><a href='https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/11\/ES-Electronic-Service-Datenblatt-ESORB-EA-6.pdf'   class='av-icon-char' aria-hidden='true' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' data-avia-icon-tooltip=\"&lt;br \/&gt;\nDownload Data Sheet&lt;br \/&gt;\n\"><\/a><\/span><\/td><\/tr><tr class=''><th class='avia-desc-col'>esorb EA4<\/th><td class=''>Urethane<\/td><td class=''>-40 C\u00b0 to +120 C\u00b0<\/td><td class=''>4 GHz<\/td><td class=''>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1ki7a5x-6-d9a24ea45383a436683fcf1328fbf8cc\">\n.av_font_icon.av-k1ki7a5x-6-d9a24ea45383a436683fcf1328fbf8cc{\ncolor:#333333;\nborder-color:#333333;\n}\n.av_font_icon.av-k1ki7a5x-6-d9a24ea45383a436683fcf1328fbf8cc .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-k1ki7a5x-6-d9a24ea45383a436683fcf1328fbf8cc avia_animate_when_visible av-icon-style- avia-icon-pos-center avia-icon-animate'><a href='https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/11\/ES-Electronic-Service-Datenblatt-ESORB-EA4.pdf'   class='av-icon-char' aria-hidden='true' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' data-avia-icon-tooltip=\"&lt;br \/&gt;\nDownload Data Sheet&lt;br \/&gt;\n\"><\/a><\/span><\/td><\/tr><tr class=''><th class='avia-desc-col'>esorb EA4-S<\/th><td class=''>Silicone<\/td><td class=''>-40 C\u00b0 to +170 C\u00b0<\/td><td class=''>4 GHz<\/td><td class=''>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1ki7a5x-5-0b09bd4d81d16044a5d0bb9a29e9ea0f\">\n.av_font_icon.av-k1ki7a5x-5-0b09bd4d81d16044a5d0bb9a29e9ea0f{\ncolor:#333333;\nborder-color:#333333;\n}\n.av_font_icon.av-k1ki7a5x-5-0b09bd4d81d16044a5d0bb9a29e9ea0f .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-k1ki7a5x-5-0b09bd4d81d16044a5d0bb9a29e9ea0f avia_animate_when_visible av-icon-style- avia-icon-pos-center avia-icon-animate'><a href='https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/11\/ES-Electronic-Service-Datenblatt-ESORB-EA4.pdf'   class='av-icon-char' aria-hidden='true' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' data-avia-icon-tooltip=\"&lt;br \/&gt;\nDownload Data Sheet&lt;br \/&gt;\n\"><\/a><\/span><\/td><\/tr><tr class=''><th class='avia-desc-col'>esorb EA1<\/th><td class=''>Urethane<\/td><td class=''>-40 C\u00b0 to +120 C\u00b0<\/td><td class=''>1 GHz to 18 GHz<\/td><td class=''>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1ki7a5x-4-58348545e3b6380c5e109a75c3ccb4d2\">\n.av_font_icon.av-k1ki7a5x-4-58348545e3b6380c5e109a75c3ccb4d2{\ncolor:#333333;\nborder-color:#333333;\n}\n.av_font_icon.av-k1ki7a5x-4-58348545e3b6380c5e109a75c3ccb4d2 .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-k1ki7a5x-4-58348545e3b6380c5e109a75c3ccb4d2 avia_animate_when_visible av-icon-style- avia-icon-pos-center avia-icon-animate'><a href='https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/11\/ES-Electronic-Service-Datenblatt-ESORB-EA1.pdf'   class='av-icon-char' aria-hidden='true' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' data-avia-icon-tooltip=\"&lt;br \/&gt;\nDownload Data Sheet&lt;br \/&gt;\n\"><\/a><\/span><\/td><\/tr><tr class=''><th class='avia-desc-col'>esorb EA1-S<\/th><td class=''>Silicone<\/td><td class=''>-40 C\u00b0 to +170 C\u00b0<\/td><td class=''>1 GHz to 18 GHz<\/td><td class=''>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1ki7a5x-3-aaa42e0f13fd1d73b708d465b809a3ad\">\n.av_font_icon.av-k1ki7a5x-3-aaa42e0f13fd1d73b708d465b809a3ad{\ncolor:#333333;\nborder-color:#333333;\n}\n.av_font_icon.av-k1ki7a5x-3-aaa42e0f13fd1d73b708d465b809a3ad .av-icon-char{\nfont-size:20px;\nline-height:20px;\n}\n<\/style>\n<span  class='av_font_icon av-k1ki7a5x-3-aaa42e0f13fd1d73b708d465b809a3ad avia_animate_when_visible av-icon-style- avia-icon-pos-center avia-icon-animate'><a href='https:\/\/www.electronic-service.de\/electronic-service-wp\/wp-content\/uploads\/2019\/11\/ES-Electronic-Service-Datenblatt-ESORB-EA1.pdf'   class='av-icon-char' aria-hidden='true' data-av_icon='\ue84b' data-av_iconfont='entypo-fontello' data-avia-icon-tooltip=\"&lt;br \/&gt;\nDownload Data Sheet&lt;br \/&gt;\n\"><\/a><\/span><\/td><\/tr><\/tbody><\/table><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-k1khpjff-10-141ae477c516e6abe6713c3902be6e64\">\n#top .hr.hr-invisible.av-k1khpjff-10-141ae477c516e6abe6713c3902be6e64{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-k1khpjff-10-141ae477c516e6abe6713c3902be6e64 hr-invisible  avia-builder-el-18  el_after_av_table  el_before_av_one_full '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3tksp-0b222781f5225935443e2a35d60e8a97\">\n.flex_column.av-3tksp-0b222781f5225935443e2a35d60e8a97{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-3tksp-0b222781f5225935443e2a35d60e8a97 av_one_full  avia-builder-el-19  el_after_av_hr  el_before_av_one_full  first flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mk1z96mi-da0b71d935631f2603ada9466061cbac\">\n#top .av-special-heading.av-mk1z96mi-da0b71d935631f2603ada9466061cbac{\npadding-bottom:5px;\ncolor:#004687;\nfont-size:35px;\n}\nbody .av-special-heading.av-mk1z96mi-da0b71d935631f2603ada9466061cbac .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-mk1z96mi-da0b71d935631f2603ada9466061cbac .av-special-heading-tag{\nfont-size:35px;\n}\n.av-special-heading.av-mk1z96mi-da0b71d935631f2603ada9466061cbac .special-heading-inner-border{\nborder-color:#004687;\n}\n.av-special-heading.av-mk1z96mi-da0b71d935631f2603ada9466061cbac .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-mk1z96mi-da0b71d935631f2603ada9466061cbac .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-mk1z96mi-da0b71d935631f2603ada9466061cbac .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-mk1z96mi-da0b71d935631f2603ada9466061cbac av-special-heading-h2 custom-color-heading blockquote modern-quote  avia-builder-el-20  el_before_av_textblock  avia-builder-el-first  av-inherit-size av-linked-heading'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >How It Works and Technical Specifications <\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-mk1z9bu4-3ebb5d54b7bc75de915d23f665debe3c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><p>Hollow-core absorbers convert electromagnetic energy into heat, thereby preventing unwanted reflections within enclosed systems. Attenuation is achieved using special foam absorbers or structured materials tuned to specific frequency ranges. Depending on the application, different geometries are used, such as pyramid-shaped or wedge-shaped structures, which enable gradual impedance matching.<\/p>\n<p>The materials are typically based on polymer foams loaded with carbon or ferrite. This combination ensures a high absorption rate while maintaining a low weight. Adaptation to different frequency ranges is achieved by varying the layer thickness, density, and conductivity of the material. This allows for the fulfillment of both narrowband and broadband requirements.<\/p>\n<p>A key advantage is their flexibility in adapting to complex geometries. Cavity absorbers can be cut to size, glued, or mechanically fastened. They retain their shape even when exposed to temperature fluctuations and maintain their damping properties over a wide temperature range.<\/p>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-x9jqx-3bbb6cf6dd6f8e1ca4e89de4dbb70cc4\">\n.flex_column.av-x9jqx-3bbb6cf6dd6f8e1ca4e89de4dbb70cc4{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-x9jqx-3bbb6cf6dd6f8e1ca4e89de4dbb70cc4 av_one_full  avia-builder-el-22  el_after_av_one_full  el_before_av_one_full  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-q5xl5-cb1d14c5115312f6c231c0c1f0810325\">\n#top .av-special-heading.av-q5xl5-cb1d14c5115312f6c231c0c1f0810325{\npadding-bottom:5px;\ncolor:#004687;\nfont-size:35px;\n}\nbody .av-special-heading.av-q5xl5-cb1d14c5115312f6c231c0c1f0810325 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-q5xl5-cb1d14c5115312f6c231c0c1f0810325 .av-special-heading-tag{\nfont-size:35px;\n}\n.av-special-heading.av-q5xl5-cb1d14c5115312f6c231c0c1f0810325 .special-heading-inner-border{\nborder-color:#004687;\n}\n.av-special-heading.av-q5xl5-cb1d14c5115312f6c231c0c1f0810325 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-q5xl5-cb1d14c5115312f6c231c0c1f0810325 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-q5xl5-cb1d14c5115312f6c231c0c1f0810325 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-q5xl5-cb1d14c5115312f6c231c0c1f0810325 av-special-heading-h2 custom-color-heading blockquote modern-quote  avia-builder-el-23  el_before_av_textblock  avia-builder-el-first  av-inherit-size av-linked-heading'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Applications in Industry and Research <\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-mk1zimbu-5dde35f445fc1196bd9d22aad30e3d64 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><div>\n<p>Cavity absorbers are used in numerous technical fields where electromagnetic interference must be minimized. In the automotive industry, they are used in radar systems and <a href=\"https:\/\/www.electronic-service.de\/en\/things-to-know\/autonomous-driving-sensors\/\" rel=\"noreferrer noopener\">sensors for autonomous driving<\/a> to prevent measurement errors caused by reflections.<\/p>\n<p>In the aerospace industry, cavity absorbers are used in antenna housings, satellite components, and waveguide structures. They prevent resonances that could impair signal quality. They are also indispensable in the defense sector\u2014for example, in radar systems, secure communications, and advanced drone technology with thermal imaging systems.<\/p>\n<p>In medical technology, cavity absorbers support EMC compliance for imaging systems and sensitive diagnostic devices. The telecommunications industry relies on precise RF attenuation in base stations, antenna enclosures, and 5G infrastructure. They are also indispensable in measurement technology for creating defined test conditions without disruptive reflections.<\/p>\n<p>Other areas of application include:<\/p>\n<ul>\n<li>Railway Technology \u2013 EMC Protection in Control and Communication Systems<\/li>\n<li>Industrial Electronics \u2013 Protecting Sensitive Control Systems and Power Electronics<\/li>\n<li>Data Centers \u2013 Shielding Against High-Frequency Interference in Server and Network Infrastructure<\/li>\n<li>Maritime Applications \u2013 Radar and Communication Systems for Shipping and the Coast Guard<\/li>\n<li>Agriculture \u2013 Precision Farming with GPS-Based Systems and Drones<\/li>\n<\/ul>\n<p>In addition, cavity absorbers are used in high-frequency measuring instruments, test chambers, shielded enclosures, and research laboratories for high-frequency technology.<\/p>\n<p>The selection of the appropriate absorber depends on the frequency range, available installation space, and the specific attenuation requirements. E.S. Electronic Service GmbH can assist you in selecting and sizing the optimal solution for your application.<\/p>\n<\/div>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kx9x5-1ad11f24761f5e3281f769eac9845add\">\n.flex_column.av-kx9x5-1ad11f24761f5e3281f769eac9845add{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-kx9x5-1ad11f24761f5e3281f769eac9845add av_one_full  avia-builder-el-25  el_after_av_one_full  el_before_av_one_full  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb\">\n#top .av-special-heading.av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb{\npadding-bottom:5px;\ncolor:#004687;\nfont-size:35px;\n}\nbody .av-special-heading.av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb .av-special-heading-tag{\nfont-size:35px;\n}\n.av-special-heading.av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb .special-heading-inner-border{\nborder-color:#004687;\n}\n.av-special-heading.av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-mk1zjfjt-437f2a936872c04cc3f5b8f2805eabeb av-special-heading-h2 custom-color-heading blockquote modern-quote  avia-builder-el-26  el_before_av_textblock  avia-builder-el-first  av-inherit-size av-linked-heading'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Differences from Other HF Absorbers <\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-mk1zjmn4-3129d153547498c2eddcf54d9b794dae '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><div>\n<p>While <a href=\"https:\/\/www.electronic-service.de\/en\/products\/hf-absorber\/\" rel=\"noreferrer noopener\">RF absorbers<\/a>, as a broad category, encompass various designs, cavity absorbers are distinguished by their specific application environments. Broadband absorbers cover a wide frequency spectrum and are primarily used in anechoic chambers. Narrowband absorbers, on the other hand, are optimized for a narrow frequency range and are used where targeted attenuation at specific frequencies is required.<\/p>\n<p>Cavity absorbers combine the properties of both types but are designed for use in confined spaces. Their geometry allows them to be integrated into existing systems without requiring extensive structural modifications. The material thickness and texture are selected to ensure effective sound absorption even when space is limited.<\/p>\n<p>A cavity absorber is often chosen when traditional flat absorbers cannot be used due to space constraints. Thanks to their three-dimensional design, even complex interior spaces can be effectively dampened.<\/p>\n<\/div>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-gftf5-ba8f38a2333128e3ef815d0acb5a0589\">\n.flex_column.av-gftf5-ba8f38a2333128e3ef815d0acb5a0589{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-gftf5-ba8f38a2333128e3ef815d0acb5a0589 av_one_full  avia-builder-el-28  el_after_av_one_full  el_before_av_one_full  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42\">\n#top .av-special-heading.av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42{\npadding-bottom:5px;\ncolor:#004687;\nfont-size:35px;\n}\nbody .av-special-heading.av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42 .av-special-heading-tag{\nfont-size:35px;\n}\n.av-special-heading.av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42 .special-heading-inner-border{\nborder-color:#004687;\n}\n.av-special-heading.av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-mk1zjv8j-7c9e2631c7a3e7b814aeb54d10af5f42 av-special-heading-h2 custom-color-heading blockquote modern-quote  avia-builder-el-29  el_before_av_textblock  avia-builder-el-first  av-inherit-size av-linked-heading'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Personalized Consulting for Your Application <\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-mk1zkb7v-00807688f322dc6fc2d508f6a98f49d1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><div>\n<p>Every application has specific requirements in terms of frequency range, sound absorption performance, and design. E.S. Electronic Service GmbH will work with you to analyze the technical parameters and recommend the appropriate sound absorber solution. <a href=\"https:\/\/www.electronic-service.de\/en\/#kontakt\" rel=\"noreferrer noopener\">Contact us<\/a> for a no-obligation consultation regarding your project.<\/p>\n<\/div>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-7ttp5-812dd2b49e216a68c4dc9d6b56edc264\">\n.flex_column.av-7ttp5-812dd2b49e216a68c4dc9d6b56edc264{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-7ttp5-812dd2b49e216a68c4dc9d6b56edc264 av_one_full  avia-builder-el-31  el_after_av_one_full  el_before_av_postcontent  avia-builder-el-last  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa\">\n#top .av-special-heading.av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa{\npadding-bottom:5px;\ncolor:#004687;\nfont-size:35px;\n}\nbody .av-special-heading.av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa .av-special-heading-tag{\nfont-size:35px;\n}\n.av-special-heading.av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa .special-heading-inner-border{\nborder-color:#004687;\n}\n.av-special-heading.av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-mk1zkioy-1eba5b89573f89b7fc92994fce4677aa av-special-heading-h2 custom-color-heading blockquote modern-quote  avia-builder-el-32  el_before_av_textblock  avia-builder-el-first  av-inherit-size av-linked-heading'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Frequently Asked Questions About Cavity Absorbers<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-mk1zljwf-f7b928a83a57854c1d75e46541dc77d1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock av_inherit_color'  itemprop=\"text\" ><div>\n<p>The following questions provide an overview of the most important technical aspects and applications of cavity absorbers.<\/p>\n<h3><strong>For which frequency ranges are cavity absorbers suitable?<\/strong><\/h3>\n<p>Depending on the design, cavity absorbers cover frequency ranges from a few hundred megahertz up to the gigahertz range. The exact specifications depend on the material composition and structural geometry. E.S. Electronic Service GmbH offers solutions tailored to your specific frequency range.<\/p>\n<h3><strong>How do foam absorbers differ from other cavity absorbers?<\/strong><\/h3>\n<p>Foam absorbers consist of an open-cell polymer foam loaded with conductive particles. They are lightweight, can be easily cut to size, and offer good broadband absorption. Other cavity absorbers may consist of ferrite materials or structured composite materials that are optimized for specific frequency ranges.<\/p>\n<h3><strong>Can cavity absorbers be retrofitted into existing systems?<\/strong><\/h3>\n<p>Yes, most cavity absorbers can be retrofitted. They can be secured using adhesives, mechanical fasteners, or Velcro fasteners. Their flexible adaptability allows them to be integrated even into complex geometries without major modifications.<\/p>\n<h3><strong>What temperature ranges can cavity absorbers withstand?<\/strong><\/h3>\n<p>Standard materials are designed for temperatures ranging from approximately -40 \u00b0C to +85 \u00b0C. High-temperature variants are available for special applications with higher temperature requirements. Thermal stability is an important selection criterion, particularly in automotive and aerospace applications.<\/p>\n<h3><strong>How is the sound absorption performance of a cavity absorber measured?<\/strong><\/h3>\n<p>Attenuation is expressed in decibels (dB) and measured across the relevant frequency range. Standardized measurement methods allow for the comparison of different materials. E.S. Electronic Service GmbH will provide you with detailed measurement data upon request so that you can evaluate the suitability of the material for your application.<\/p>\n<\/div>\n<\/div><\/section><\/p><\/div><\/p>\n\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":2003,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2015","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cavity Absorbers for RF Applications | E.S. 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