{"id":4685,"date":"2013-04-04T09:49:18","date_gmt":"2013-04-04T07:49:18","guid":{"rendered":"http:\/\/www.gsm-modem.de\/M2M\/?p=4685"},"modified":"2013-07-19T22:03:29","modified_gmt":"2013-07-19T20:03:29","slug":"dos-and-donts-during-embedded-antenna-design-in","status":"publish","type":"post","link":"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/dos-and-donts-during-embedded-antenna-design-in\/","title":{"rendered":"Dos and don&#8217;ts during embedded antenna design in EA#"},"content":{"rendered":"<h2>The list is not complete. It should just help to avoid the basic mistakes that other developers with no or less RF skills have done before.<\/h2>\n<div id=\"attachment_4692\" style=\"width: 410px\" class=\"wp-caption alignright\"><a rel=\"attachment wp-att-4692\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/dos-and-donts-during-embedded-antenna-design-in\/attachment\/dos_and_donts_during_embedded_antenna_design_in\/\"><img aria-describedby=\"caption-attachment-4692\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-4692\" title=\"Dos_and_donts_during_embedded_antenna_design_in\" src=\"http:\/\/www.gsm-modem.de\/M2M\/.\/wp-content\/uploads\/2013\/04\/Dos_and_donts_during_embedded_antenna_design_in-300x268.jpg\" alt=\"Dos and don'ts during embedded antenna design in\" width=\"400\" height=\"357\" \/><\/a><p id=\"caption-attachment-4692\" class=\"wp-caption-text\">Dos and don&#39;ts during embedded antenna design in<\/p><\/div>\n<ul>\n<li>Take care on a reasonable ground plane for the monopole antenna and remember that the size of the ground plane is related to the lowest radio frequency that the M2M device have to transceive<\/li>\n<li>Remember the tips and tricks you can use to make the ground plane bigger<\/li>\n<li>Select your embedded antenna carefully and have a closer look on the antenna efficiency special at the lower frequencies that the M2M device has to transmit and to receive (e.g. GSM 850 = 824 MHz or LTE 700 = 698 MHz)<\/li>\n<li>If you plan to enter non local markets like USA, China, Brazil or China then have a closer look on national regulations and specifications (e.g. RSE, TRP, TIS). Remember that R&amp;TTE is an easy task because it requests no TRP and TIS like the operator approval of AT&amp;T<\/li>\n<li>Remember that an external stubby helical antenna is most time a monopole antenna with a need for ground plane<\/li>\n<li>Remember that PCB antennas with coaxial cables are often planned to be mounted at least 20 mm far away from the ground plane and metal layer<\/li>\n<li>Do not place the ground layer, the supply voltage layer or any other PCB layer underneath the embedded antenna (e.g. chip antenna)<\/li>\n<li>Do not place traces underneath the antenna<\/li>\n<li>Do not place the antenna very close to metallic objects (e.g. screws of the enclosure, battery, display, shielding and buttons)<\/li>\n<li>Do not place the antenna too close to dielectric materials like plastic enclosures, plastic screws, keypads or acrylic glass<\/li>\n<li>Do not expect to reach the antenna parameter (gain, antenna efficiency, radiation pattern) listed in the data sheet and measured on an evaluation board without spending time and effort on tuning<\/li>\n<li>Do not tune the embedded antenna in free air and remember that different kind and thickness of plastic will have an effect on the embedded antenna<\/li>\n<li>Take care that the enclosure is non metal and that the plastic does not contain metal or carbon<\/li>\n<li>If possible test the selected plastic for high RF losses before field tests and mass production<\/li>\n<li>Never make a one-to-one copy of an antenna design and expect it to work without testing and tuning<\/li>\n<li>Do not use too thin PCB tracks or too long PCB tracks to minimize the loss between transceiver and antenna and replace the PCB tracks to a coaxial cables if the distance between antenna and transceiver will be too long<\/li>\n<li>Remember that the final design is always a compromise and that you often will not reach the same result like tested on reference PCB<\/li>\n<li>If the RF skills of your own developer team are too low, hire an external consulter<\/li>\n<\/ul>\n<p>If you have hints and tips that should be listed in the upper list then just drop an email to harald.naumann (at) gsm-modem.de. Any feedback by comment id is welcome as well.<\/p>\n<ul>\n<li>\n<h5><a title=\"Permanent Link to Nothing will interfere your embedded antenna? EA# 1\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/nothing-will-interfere-your-embedded-antenna\/\">Nothing will interfere your embedded antenna?<\/a><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to Why the embedded chip or patch antennas are resonant on the wrong \u2013 to high \u2013 frequency? EA# 4\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/why-the-embedded-chip-or-patch-antennas-are-resonant-wrong-to-high-frequency\/\">Why the embedded chip or patch antennas are resonant on the wrong \u2013 to high \u2013 frequency? <\/a><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to How will the ground plane effect your embedded antenna? EA# 2\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/ground-plane-embedded-antenna-ea-2\/\">How will the ground plane effect your embedded antenna? <\/a><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to Which radio approvels has your M2M device to pass? EA# 3\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/radio-approvels-your-m2m-device\/\">Which radio approvals has your M2M device to pass?<\/a><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to How to connect your embedded antenna with your wireless module?\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/transmission-line\/\">How to connect your embedded antenna with your wireless module?<\/a><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to How to design an antenna matching circuit? EA# 5\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/how-to-design-an-antenna-matching-circuit\/\">How to design an antenna matching circuit?<\/a><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to How to switch between an internal and external cellular or GNSS antenna cheap? EA#\" href=\"http:\/\/www.gsm-modem.de\/M2M\/uncategorized\/how-to-switch-between-an-internal-and-external-antenna\/\">How to switch between an internal and external cellular or GNSS antenna cheap?<\/a><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to Which GPS antenna shall be used for a tracking device? EA#\" rel=\"bookmark\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/which-gps-antenna-to-use-for-a-tracking-device\/\">Which GPS antenna shall be used for a tracking device? <\/a><\/h5>\n<\/li>\n<li>\n<h5><strong><a href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/embedded-antenna-bluetooth-gps-gnss\/\">Which embedded antenna to select for a Bluetooth \/ GNSS application?<\/a><\/strong><\/h5>\n<\/li>\n<li>\n<h5><a title=\"Permanent Link to Dos and don\u2019ts during embedded antenna design in EA# 80\" href=\"http:\/\/www.gsm-modem.de\/M2M\/m2m-faq\/dos-and-donts-during-embedded-antenna-design-in\/\">Dos and don\u2019ts during embedded antenna design in <\/a><\/h5>\n<\/li>\n<li>\n<h5><a href=\"http:\/\/www.gsm-modem.de\/M2M\/index.php?s=ead%23\">Examples for good and bad M2M designs with embedded antennas<\/a><\/h5>\n<\/li>\n<li><a href=\"http:\/\/www.gsm-modem.de\/M2M\/index.php?s=%23AQA\">Q&amp;A: Design in of embedded antennas<\/a><\/li>\n<\/ul>\n<div class=\"shariff shariff-align-flex-start shariff-widget-align-flex-start\"><ul class=\"shariff-buttons theme-default orientation-horizontal buttonsize-small\"><li class=\"shariff-button twitter shariff-nocustomcolor\" style=\"background-color:#32bbf5\"><a href=\"https:\/\/twitter.com\/share?url=http%3A%2F%2Fwww.gsm-modem.de%2FM2M%2Fm2m-faq%2Fdos-and-donts-during-embedded-antenna-design-in%2F&text=Dos%20and%20don%E2%80%99ts%20during%20embedded%20antenna%20design%20in%20EA%23\" title=\"Share on Twitter\" aria-label=\"Share on Twitter\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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It should just help to avoid the basic mistakes that other developers with no or less RF skills have done before. Take care on a reasonable ground plane for the monopole antenna and remember that the size of the ground plane is related to the lowest radio frequency that the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[3],"tags":[15,13],"aioseo_notices":[],"_links":{"self":[{"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/posts\/4685"}],"collection":[{"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/comments?post=4685"}],"version-history":[{"count":19,"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/posts\/4685\/revisions"}],"predecessor-version":[{"id":5027,"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/posts\/4685\/revisions\/5027"}],"wp:attachment":[{"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/media?parent=4685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/categories?post=4685"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gsm-modem.de\/M2M\/wp-json\/wp\/v2\/tags?post=4685"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}