{"id":156162,"date":"2023-01-24T15:28:35","date_gmt":"2023-01-24T21:28:35","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2023\/01\/device-transmits-radio-waves-with-almost-no-power-without-violating-the-laws-of-physics"},"modified":"2023-01-24T15:28:35","modified_gmt":"2023-01-24T21:28:35","slug":"device-transmits-radio-waves-with-almost-no-power-without-violating-the-laws-of-physics","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2023\/01\/device-transmits-radio-waves-with-almost-no-power-without-violating-the-laws-of-physics","title":{"rendered":"Device transmits radio waves with almost no power\u2014without violating the laws of physics"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/gX9cbxLSOkE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>A new ultra-low-power method of communication at first glance seems to violate the laws of physics. It is possible to wirelessly transmit information simply by opening and closing a switch that connects a resistor to an antenna. No need to send power to the antenna.<\/p>\n<p>Our system, combined with techniques for <a href=\"https:\/\/doi.org\/10.1109\/JSAC.2018.2872615\">harvesting energy from the environment<\/a>, could lead to all manner of devices that transmit data, including <a href=\"https:\/\/techxplore.com\/tags\/tiny+sensors\/\" rel=\"tag\" class=\"\">tiny sensors<\/a> and implanted <a href=\"https:\/\/techxplore.com\/tags\/medical+devices\/\" rel=\"tag\" class=\"\">medical devices<\/a>, without needing batteries or other power sources. These include sensors for <a href=\"https:\/\/www.usenix.org\/conference\/nsdi17\/technical-sessions\/presentation\/vasisht\">smart agriculture<\/a>, <a href=\"https:\/\/doi.org\/10.1038\/s41551-021-00683-3\">electronics implanted in the body<\/a> that never need battery changes, better <a href=\"https:\/\/doi.org\/10.4018\/JGIM.2020100108\">contactless credit cards<\/a> and maybe even new ways for <a href=\"https:\/\/www.nasa.gov\/smallsat-institute\/sst-soa\/communications\">satellites<\/a> to communicate.<\/p>\n<p>Apart from the energy needed to flip the switch, no other energy is needed to transmit the information. In our case, the switch is a transistor, an electrically controlled switch with no moving parts that consumes a minuscule amount of power.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new ultra-low-power method of communication at first glance seems to violate the laws of physics. It is possible to wirelessly transmit information simply by opening and closing a switch that connects a resistor to an antenna. No need to send power to the antenna. Our system, combined with techniques for harvesting energy from the [\u2026]<\/p>\n","protected":false},"author":630,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,1523,1506,2028],"tags":[],"class_list":["post-156162","post","type-post","status-publish","format-standard","hentry","category-biotech-medical","category-computing","category-food","category-satellites"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/156162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/630"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=156162"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/156162\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=156162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=156162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=156162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}