{"id":257,"date":"2025-06-20T07:51:07","date_gmt":"2025-06-19T22:51:07","guid":{"rendered":"https:\/\/amiot.sfc.keio.ac.jp\/wordpress\/?page_id=257"},"modified":"2025-08-22T14:28:24","modified_gmt":"2025-08-22T05:28:24","slug":"technology","status":"publish","type":"page","link":"https:\/\/amiot.sfc.keio.ac.jp\/?page_id=257","title":{"rendered":"Technology"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Backscatter Communication (\u5f8c\u65b9\u6563\u4e71\u901a\u4fe1)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Backscatter communication<br>\u5f8c\u65b9\u6563\u4e71(backscatter)\u3068\u306f\u3082\u3068\u3082\u3068\u30ec\u30fc\u30c0\u5206\u91ce\u306e\u7528\u8a9e\u3067\u3042\u308a\u3001\u30ec\u30fc\u30c0\u3092\u7167\u5c04\u3057\u305f\u969b\u306b\u3001\u5bfe\u8c61\u7269\u304b\u3089\u7167\u5c04\u65b9\u5411\u306b\u5bfe\u3057\u3066\u3001\u7269\u4f53\u306e\u5f62\u72b6\u3084\u7d20\u6750\u306a\u3069\u306b\u3088\u3063\u3066\u6c7a\u307e\u308b\u30ec\u30fc\u30c0\u65ad\u9762\u7a4d(Radar Cross Section\uff09\u306b\u5fdc\u3058\u3066\u53cd\u5c04\u3055\u308c\u308b\u96fb\u6ce2\u3092\u8868\u3057\u3066\u3044\u308b\uff0e\u30ec\u30fc\u30c0\u3067\u306f\u3001\u3042\u3089\u304b\u3058\u3081\u6c7a\u307e\u3063\u305f\u30d1\u30bf\u30fc\u30f3\uff08\u30d1\u30eb\u30b9\u3084\u3001\u5468\u6ce2\u6570\u5909\u8abf\u306a\u3069\uff09\u306e\u96fb\u6ce2\u4fe1\u53f7\u3092\u9001\u4fe1\u3057\u3001\u53d7\u4fe1\u3057\u305f\u5f8c\u65b9\u6563\u4e71\u304b\u3089\u5bfe\u8c61\u7269\u307e\u3067\u306e\u8ddd\u96e2\u3084\u76f8\u5bfe\u901f\u5ea6\u3092\u7279\u5b9a\u3057\u3066\u3044\u308b\uff0e\u4e00\u65b9\u3001\u5f8c\u65b9\u6563\u4e71\u901a\u4fe1\u3067\u306f\u3001\u901a\u4fe1\u65b9\u5f0f\u3092\u5171\u6709\u3059\u308b\u7aef\u672b\u304c\u5f8c\u65b9\u6563\u4e71\u3092\u30c7\u30b8\u30bf\u30eb\u5909\u8abf\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u60c5\u5831\u306e\u4f1d\u9001\u3092\u53ef\u80fd\u3068\u3057\u3066\u3044\u308b\uff0e<br> \u7269\u6d41\u3084\u3001\u30a4\u30f3\u30d5\u30e9\u30e2\u30cb\u30bf\u306a\u3069\u306e\u5206\u91ce\u3067\u306f\u3001\u7269\u306e\u72b6\u614b\u3092\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u3067\u628a\u63e1\u3057\u3066\u3001\u5236\u5fa1\u3059\u308b\u3053\u3068\u304c\u696d\u52d9\u52b9\u7387\u5316\u3084\u30b5\u30fc\u30d3\u30b9\u9ad8\u5ea6\u5316\u306b\u8ca2\u732e\u3059\u308b\uff0e10uW\u7d1a\u306e\u8d85\u4f4e\u6d88\u8cbb\u96fb\u529b\u3067\u52d5\u4f5c\u3057\u3001\u7aef\u672b\u3092Radio Frequency Integrated Circuit (RFIC)\u3068\u30bb\u30f3\u30b5\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u30a2\u30f3\u30c6\u30ca\u3092\u9664\u3051\u3070mm^2\u7d1a\u306e\u8d85\u5c0f\u5f62\u3067\u5b9f\u73fe\u3067\u304d\u308b\u5f8c\u65b9\u6563\u4e71\u901a\u4fe1\u306f\u3001\u73fe\u5728\u306fUHF\u5e2f\u306eRadio Frequency Identification (RFID)\u3092\u4e2d\u5fc3\u306b\u6d3b\u7528\u3055\u308c\u3066\u3044\u308b\uff0e\u3055\u3089\u306bWiFi\u306a\u3069\u306e\u7121\u7dda\u901a\u4fe1\u3092\u5229\u7528\u3057\u3066\u5f8c\u65b9\u6563\u4e71\u3059\u308bambient backscatter\u3042\u308b\u3044\u306f\u3001\u4ed6\u306e\u7121\u7dda\u30b7\u30b9\u30c6\u30e0\u306b\u4f9d\u5b58\u3059\u308b\u3068\u3044\u3046\u610f\u5473\u3092\u8fbc\u3081\u305fsymbiotic backscatter\u3082\u6ce8\u76ee\u3055\u308c\u3066\u3044\u308b\uff0eBeyond 5G\u3067\u3082\u4f4e\u6d88\u8cbb\u96fb\u529b\u30fb\u5c0f\u5f62\u306e\u30bb\u30f3\u30b5\u7aef\u672b\u304b\u3089\u306e\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\u3068\u3057\u3066\u691c\u8a0e\u3055\u308c\u3066\u3044\u308b\uff0e\u3053\u306e\u3088\u3046\u306b\u5f8c\u65b9\u6563\u4e71\u901a\u4fe1\u306f\u7269\u3068\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u306e\u63a5\u7d9a(Internet of Things: IoT)\u3084\u305d\u306e\u305f\u3081\u306e\u7121\u7dda\u7d66\u96fb\u3092\u5b9f\u73fe\u3059\u308b\u6709\u52b9\u306a\u624b\u6bb5\u3067\u3042\u308a\u3001\u4eca\u5f8c\u69d8\u3005\u306a\u5468\u6ce2\u6570\u5e2f\u3001\u69d8\u3005\u306a\u5f62\u614b\u3067\u307e\u3059\u307e\u3059\u5229\u7528\u304c\u5e83\u304c\u308b\u3053\u3068\u304c\u671f\u5f85\u3067\u304d\u308b\uff0e<br> symbiotic backscatter\u3067\u306f\u3001\u5f8c\u65b9\u6563\u4e71\u3059\u308b\u96fb\u6ce2\u3092\u4f9b\u7d66\u3059\u308b\u88c5\u7f6e\u3092primary transmitter, \u5f8c\u65b9\u6563\u4e71\u3059\u308b\u7aef\u672b\u3092backscatter device, \u5f8c\u65b9\u6563\u4e71\u4fe1\u53f7\u3092\u53d7\u4fe1\u3059\u308b\u88c5\u7f6e\u3092primary receiver\u3068\u5b9a\u7fa9\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u542b\u3081\u3066\u5f8c\u65b9\u6563\u4e71\u901a\u4fe1\u306e\u57fa\u672c\u69cb\u6210\u3092\u4e00\u822c\u5316\u3059\u308b\u3068\u56f3\u306e\u3088\u3046\u306b\u66f8\u3051\u308b\uff0eRFID\u3067\u306fprimary transmitter\u3068primary receiver\u304c\u540c\u4e00\u306e\u88c5\u7f6e\u306b\u5b9f\u88c5\u3055\u308c\u3001\u8cea\u554f\u5668(interrogator\uff09\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u304c\u591a\u3044\uff0e\u7aef\u672b\u304c\u53cd\u5c04\u3059\u308b\u969b\u3001\u8cea\u554f\u5668\u306f\u4e00\u822c\u306b\u306f\u9023\u7d9a\u6ce2(Continuous wave: CW)\u3092\u4f9b\u7d66\u3057\u3066\u3044\u308b\u3002<br> \u8cea\u554f\u5668\u306e\u9001\u4fe1\u3068\u53d7\u4fe1\u30a2\u30f3\u30c6\u30ca\u304c\u5171\u7528\u306e\u5834\u5408\u306b\u306fmonostatic\u3001\u9001\u4fe1\u3068\u53d7\u4fe1\u30a2\u30f3\u30c6\u30ca\u304c\u5225\u306e\u5834\u5408\u306b\u306fcolocated bistatic\u3001\u9001\u4fe1\u3068\u53d7\u4fe1\u30a2\u30f3\u30c6\u30ca\u304cambient backscatter\u306e\u3088\u3046\u306b\u5225\u76ee\u7684\u3067\u69cb\u7bc9\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306fdislocated bistatic\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u3082\u3042\u308b\uff0e\u7aef\u672b\u306b\u5411\u304b\u3046\u901a\u4fe1\u3042\u308b\u3044\u306f\u7121\u7dda\u7d66\u96fb\u56de\u7dda\u3092\u30d5\u30a9\u30ef\u30fc\u30c9\u56de\u7dda\u3001\u7aef\u672b\u304b\u3089\u53cd\u5c04\u306b\u3088\u3063\u3066\u5f62\u6210\u3055\u308c\u308b\u7121\u7dda\u56de\u7dda\u3092\u30ea\u30bf\u30fc\u30f3\u56de\u7dda\u3068\u547c\u3076\uff0e<br> \u5f8c\u65b9\u6563\u4e71\u901a\u4fe1\u306f\u96fb\u6c60\u306a\u3057\u3092\u542b\u3081\u305f\u4f4e\u6d88\u8cbb\u96fb\u529b\u7aef\u672b\u3084\u8d85\u5c0f\u5f62\u7aef\u672b\u306e\u5b9f\u73fe\u3068\u3044\u3046\u7279\u9577\u306e\u4e00\u65b9\u3067\u3001\u7d66\u96fb\u304c\u5b89\u5b9a\u3057\u306a\u3044\u3053\u3068\u3001\u53cd\u5c04\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5143\u6765\u30ea\u30bf\u30fc\u30f3\u56de\u7dda\u306e\u4fe1\u53f7\u304c\u5f31\u3044\u3053\u3068\u3001\u8cea\u554f\u5668\u306e\u9001\u4fe1\u96fb\u529b\u306e\u53d7\u4fe1\u56de\u8def\u3078\u306e\u6f0f\u308c\u8fbc\u307f\u304c\u5927\u304d\u3044\u3053\u3068\u3001\u53cd\u5c04\u306e\u6ce2\u5f62\u6574\u5f62\u304c\u3067\u304d\u306a\u3044\u3053\u3068\u306a\u3069\u304b\u3089\u30ea\u30bf\u30fc\u30f3\u56de\u7dda\u306e\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u3092\u9ad8\u304f\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u304f\u3001\u901a\u4fe1\u8ddd\u96e2\u306e\u5ef6\u4f38\u3001\u901a\u4fe1\u306e\u9ad8\u901f\u5316\u3084\u5b89\u5b9a\u5316\u306a\u3069\u3001\u3055\u3089\u306a\u308b\u7814\u7a76\u958b\u767a\u304c\u6c42\u3081\u3089\u308c\u3066\u3044\u308b\u5206\u91ce\u3067\u3082\u3042\u308b\uff0e<br><\/li>\n\n\n\n<li>Full duplex backscatter communication(\u5f8c\u65b9\u6563\u4e71\u901a\u4fe1\u306e\u5168\u4e8c\u91cd\u65b9\u5f0f\uff09<\/li>\n\n\n\n<li>Interference Rejection\uff08\u5e72\u6e09\u9664\u53bb\uff09<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Distributed Antenna System (DAS)<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/amiot.sfc.keio.ac.jp\/?page_id=1783\" data-type=\"page\" data-id=\"1783\">Tools<\/a><\/h2>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Backscatter Communication (\u5f8c\u65b9\u6563\u4e71\u901a\u4fe1) Distributed Antenna System (DAS) Tools<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-257","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=257"}],"version-history":[{"count":10,"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/257\/revisions"}],"predecessor-version":[{"id":1825,"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/257\/revisions\/1825"}],"wp:attachment":[{"href":"https:\/\/amiot.sfc.keio.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}