Everybody knows you are supposed to turn off your phone and other electronic devices when you are on\u00a0a plane.\u00a0 You can leave it on during the flight, but it has to be off for takeoff and landing.\u00a0 I like to remind people in case they “forget”.\u00a0 I tend not to make a big deal during takeoff, but landing has me a little more on edge.<\/p>\n
The problem is coupled noise.\u00a0 Sure, most modern planes should be designed such that some electronic interference in the cabin should not affect the plane’s electronics, but you never know.\u00a0\u00a0And is it worth the risk?\u00a0 I don’t think so.\u00a0 The thing that worries me most is the fact that many handheld\u00a0electronics take some design shortcuts in order to minimize cost.\u00a0 Where many should probably use boards with 4 or more layers, often they will only use two layers.\u00a0 That means\u00a0that the PCB traces, instead of coupling noise onto\u00a0a solid plane (no pun intended (seriously, I meant an actual ground plane (no, not a grounded plane (although that could be the result) but an actual solid sheet of copper in the PCB (which yes, should of course be grounded, anyway, I digress….)))), are coupling noise out into the world.\u00a0 Such coupling is a special kind of “crosstalk” commonly referred to as electromagnetic interference, or EMI.\u00a0 It is but one of the many mechanisms that unwanted noise can get coupled from one place to another in electronic designs.\u00a0 You can read more about noise coupling in the following article: And please, turn off your phone when you are on a plane (more precisely, an airplane) during takeoff and landing.\u00a0 Unless you can see the radiated emissions (which you can’t, even if you squint) you won’t know they are there.<\/p>\n And speaking of radiated emissions… well, no, that’s really the subject for another blog.\u00a0 It has to do with restricting airport restaurants from serving beans…<\/p>\n","protected":false},"excerpt":{"rendered":" Everybody knows you are supposed to turn off your phone and other electronic devices when you are on\u00a0a plane.\u00a0 You…<\/p>\n","protected":false},"author":71672,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spanish_translation":"","french_translation":"","german_translation":"","italian_translation":"","polish_translation":"","japanese_translation":"","chinese_translation":"","footnotes":""},"categories":[13],"tags":[1024,48,1063,1088],"industry":[],"product":[],"coauthors":[],"class_list":["post-587","post","type-post","status-publish","format-standard","hentry","category-news","tag-coupled-noise","tag-crosstalk","tag-hyperlynx","tag-noise-coupling"],"_links":{"self":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts\/587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/users\/71672"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/comments?post=587"}],"version-history":[{"count":1,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts\/587\/revisions"}],"predecessor-version":[{"id":10328,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/posts\/587\/revisions\/10328"}],"wp:attachment":[{"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/media?parent=587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/categories?post=587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/tags?post=587"},{"taxonomy":"industry","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/industry?post=587"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/product?post=587"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/blogs.sw.siemens.com\/electronic-systems-design\/wp-json\/wp\/v2\/coauthors?post=587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nhttp:\/\/pcdandf.com\/cms\/component\/content\/article\/171-current-issue\/8973-designers-notebook<\/a><\/p>\n