{"id":146646,"date":"2024-04-27T12:23:13","date_gmt":"2024-04-27T12:23:13","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%eb%a3%a8%ed%94%84-%ec%95%88%ed%85%8c%eb%82%98\/"},"modified":"2024-04-27T12:23:20","modified_gmt":"2024-04-27T12:23:20","slug":"%eb%a3%a8%ed%94%84-%ec%95%88%ed%85%8c%eb%82%98","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/%eb%a3%a8%ed%94%84-%ec%95%88%ed%85%8c%eb%82%98\/","title":{"rendered":"\ub8e8\ud504 \uc548\ud14c\ub098"},"content":{"rendered":"<p class=\"sidekick\">\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc6d0\ub9ac \ubc0f \uc791\ub3d9, \ud2b9\uc131\uacfc \ub2e4\uc591\ud55c \uc751\uc6a9 \ubd84\uc57c\ub97c \uc124\uba85\ud558\ub294 \uc0c1\uc138\ud55c \uac00\uc774\ub4dc\ub85c \uc804\uc790\uae30 \uc720\ub3c4\ub97c \uc774\ud574\ud558\uace0 RFID, \ubb34\uc120 \ucda9\uc804\uc5d0 \uc801\uc6a9\ub418\ub294 \ubc29\uc2dd\uc744 \ubc30\uc6c1\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/04\/\ub8e8\ud504-\uc548\ud14c\ub098.png\" alt=\"\ub8e8\ud504 \uc548\ud14c\ub098\"\/><\/p>\n<h2>\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uae30\ubcf8 \uc6d0\ub9ac<\/h2>\n<p>\ub8e8\ud504 \uc548\ud14c\ub098(loop antenna)\ub294 \uadf8 \uc774\ub984\uc5d0\uc11c \uc54c \uc218 \uc788\ub4ef\uc774, \ud3d0\uc1c4\ub41c \ub8e8\ud504 \ud615\ud0dc\ub97c \ud55c \uc548\ud14c\ub098\uc785\ub2c8\ub2e4. \uc8fc\ub85c \uc804\ud30c\ub97c \uc1a1\uc218\uc2e0\ud560 \ub54c \uc0ac\uc6a9\ub418\uba70, \ud2b9\ud788 \uc18c\ud615\ud654\uac00 \ud544\uc694\ud55c \ud734\ub300\uc6a9 \uc7a5\uce58\uc5d0\uc11c \uc694\uae34\ud558\uac8c \ud65c\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uc548\ud14c\ub098\ub294 \uc790\uae30\uc7a5\uc5d0 \ub300\ud55c \ub192\uc740 \uac10\uc751\ub3c4\ub97c \uac00\uc9c0\ub294\ub370, \uc774\ub294 \ud3d0\uc1c4\ub41c \ub8e8\ud504\ub97c \ud1b5\ud574 \uc804\ub958\uac00 \ud750\ub97c \ub54c \ubc1c\uc0dd\ud558\ub294 \ub192\uc740 \uc790\uae30 \uc720\ub3c4(magnetic induction) \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n<h2>\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc791\ub3d9 \uc6d0\ub9ac<\/h2>\n<p>\ub8e8\ud504 \uc548\ud14c\ub098\ub294 \uc804\uae30\uc640 \uc790\uae30\uc758 \uc0c1\ud638\uc791\uc6a9\uc744 \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4. \ubcc0\ud654\ud558\ub294 \uc790\uae30\uc7a5\uc774 \ub8e8\ud504\ub97c \ud1b5\uacfc\ud560 \ub54c, \uc774\ub294 \ud328\ub7ec\ub370\uc774\uc758 \uc804\uc790\uae30 \uc720\ub3c4 \ubc95\uce59(Faraday&#8217;s law of electromagnetic induction)\uc5d0 \ub530\ub77c \uc804\ub958\ub97c \uc720\ub3c4\ud569\ub2c8\ub2e4. \uc774\ub85c \uc778\ud574 \ub8e8\ud504 \uc548\uc5d0 \uc804\ub958\uac00 \ud750\ub974\uac8c \ub418\uace0, \uc548\ud14c\ub098\uac00 \uc2e0\ud638\ub97c \uc218\uc2e0\ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<p>\uc218\ud559\uc801\uc73c\ub85c \ud45c\ud604\ud558\uc790\uba74, \ud328\ub7ec\ub370\uc774\uc758 \ubc95\uce59\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uc4f0\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><em>E = -d\u03a6\/dt<\/em><\/p>\n<p>\uc5ec\uae30\uc11c <em>E<\/em>\ub294 \uc720\ub3c4\ub41c \uc804\uae30\uc7a5\uc758 \ud06c\uae30, <em>d\u03a6\/dt<\/em>\ub294 \uc790\uae30 \ud50c\ub7ed\uc2a4(\u03a6)\uc758 \uc2dc\uac04\uc5d0 \ub300\ud55c \ubcc0\ud654\uc728\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uc74c\uc218 \ubd80\ud638\ub294 \ub80c\uce20\uc758 \ubc95\uce59(Lenz&#8217;s law)\uc744 \ubc18\uc601\ud558\uba70, \uc774\ub294 \uc720\ub3c4\ub41c \uc804\ub958\uac00 \uc790\uae30\uc7a5\uc758 \ubcc0\ud654\ub97c \ubc18\ub300\ud558\ub294 \ubc29\ud5a5\uc73c\ub85c \ud750\ub978\ub2e4\ub294 \uac83\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n<h2>\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \ud2b9\uc131<\/h2>\n<p>\ub8e8\ud504 \uc548\ud14c\ub098\ub294 \uadf8 \ud06c\uae30\uc640 \ud615\ud0dc\uc5d0 \ub530\ub77c \ub2e4\uc591\ud55c \ud2b9\uc131\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \ud615\ud0dc\ub294 \uc6d0\ud615 \ub8e8\ud504\uc774\uae34 \ud558\uc9c0\ub9cc, \uc0ac\uac01\ud615\uc774\ub098 \uc0bc\uac01\ud615 \ub4f1 \ub2e4\uc591\ud55c \ubaa8\uc591\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud615\ud0dc\uc5d0 \ub530\ub77c \uc548\ud14c\ub098\uc758 \ubc29\ud5a5\uc131, \uc8fc\ud30c\uc218 \ub300\uc751 \ubc94\uc704, \uadf8\ub9ac\uace0 \ub0b4\uc7a5\ub41c \uc784\ud53c\ub358\uc2a4\uac00 \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n<ul>\n<li>\ubc29\ud5a5\uc131(Directivity): \ub8e8\ud504 \uc548\ud14c\ub098\ub294 \ud0c0 \uc548\ud14c\ub098\uc640 \ube44\uad50\ud574 \uc9c0\ud5a5\uc131\uc774 \ub6f0\uc5b4\ub098\uba70, \uc774\ub294 \ud2b9\uc815 \ubc29\ud5a5\uc73c\ub85c\ubd80\ud130\uc758 \uc2e0\ud638\ub97c \ub354 \uc798 \uc218\uc2e0\ud560 \uc218 \uc788\ub2e4\ub294 \uc758\ubbf8\uc785\ub2c8\ub2e4.<\/li>\n<li>\uc8fc\ud30c\uc218 \ub300\uc751 \ubc94\uc704(Bandwidth): \uc548\ud14c\ub098\uc758 \ud06c\uae30\uac00 \uc791\uc744\uc218\ub85d, \uc8fc\ud30c\uc218 \ub300\uc751 \ubc94\uc704\ub294 \uc881\uc544\uc9d1\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc801\uc808\ud55c \uc124\uacc4\ub97c \ud1b5\ud574 \ub113\uc740 \ub300\uc5ed\ud3ed\uc744 \uac00\uc9c8 \uc218 \uc788\uac8c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li>\uc784\ud53c\ub358\uc2a4(Impedance): \ub8e8\ud504 \uc548\ud14c\ub098\ub294 \uc790\uae30\uc7a5\uc5d0 \ub192\uc740 \ubc18\uc751\uc131\uc744 \ubcf4\uc774\ubbc0\ub85c, \ub0b4\ubd80 \uc784\ud53c\ub358\uc2a4\ub3c4 \uc0c1\ub300\uc801\uc73c\ub85c \ub192\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ubc1c\uc2e0\uae30\ub098 \uc218\uc2e0\uae30\uc640\uc758 \uc784\ud53c\ub358\uc2a4 \uc77c\uce58\uc5d0 \uc8fc\uc758\ud558\uc5ec \uc124\uacc4\ud574\uc57c \ud568\uc744 \ub73b\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc751\uc6a9<\/h2>\n<p>\ub8e8\ud504 \uc548\ud14c\ub098\ub294 \uadf8 \ud06c\uae30\uc640 \uc6a9\uc774\ud55c \uad6c\uc131 \ub355\ubd84\uc5d0 \ub9e4\uc6b0 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \ud65c\uc6a9\ub429\ub2c8\ub2e4. \ud734\ub300\uc6a9 \ub77c\ub514\uc624, \uc1a1\uc2e0\uae30, \uadf8\ub9ac\uace0 \ud1b5\uc2e0 \uc7a5\ube44\uc5d0\uc11c \uc77c\ubc18\uc801\uc73c\ub85c \ubcfc \uc218 \uc788\ub294 \uac83\ubd80\ud130, \uc804\ubb38\uc801\uc778 \uc6a9\ub3c4 \ubc14\uae65\uc5d0\ub3c4 \ucde8\ubbf8\ub85c \ubb34\uc120 \uc804\uc790\ub97c \ub2e4\ub8e8\ub294 \uc0ac\ub78c\ub4e4\uc5d0\uac8c \uc778\uae30\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ucd5c\uadfc\uc5d0\ub294 RFID(Radio-Frequency Identification) \uc2dc\uc2a4\ud15c, \ubb34\uc120 \ucda9\uc804 \uc7a5\uce58, \uadf8\ub9ac\uace0 \ub2e4\uc591\ud55c \uc720\ud615\uc758 \uc13c\uc11c\ub4e4\uc5d0\uc11c\ub3c4 \ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc6d0\ub9ac\uac00 \ud65c\uc6a9\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\ud788, RFID \ud0dc\uadf8\ub294 \uc791\uc740 \ub8e8\ud504 \uc548\ud14c\ub098\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubb34\uc120 \uc8fc\ud30c\uc218 \uc2e0\ud638\ub97c \uc218\uc2e0\ud558\uace0, \uc800\uc7a5\ub41c \uc815\ubcf4\ub97c \uc77d\uac70\ub098 \uc804\uc1a1\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub8e8\ud504 \uc548\ud14c\ub098\ub294 \uc77c\uc0c1\uc0dd\ud65c\uc5d0\uc11c \uc811\uadfc \uc81c\uc5b4, \uc0c1\ud488 \ucd94\uc801, \uadf8\ub9ac\uace0 \ub2e4\uc591\ud55c \uc790\ub3d9 \uc2dd\ubcc4 \uc791\uc5c5\uc5d0 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n<p>\uae30\uc220\uc774 \ubc1c\uc804\ud568\uc5d0 \ub530\ub77c \ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc124\uacc4\uc640 \uc751\uc6a9\ub3c4 \ub354\uc6b1 \ub2e4\uc591\ud654\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ub8e8\ud504 \uc548\ud14c\ub098\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc6b0\ub9ac\uc758 \uc77c\uc0c1\uc740 \ubb3c\ub860 \uc0b0\uc5c5 \uc804\ubc18\uc5d0 \uac78\uccd0 \ud6a8\uc728\uc131\uacfc \uc5f0\uacb0\uc131\uc744 \ub192\uc774\ub294 \uc608\uac00 \ub298\uc5b4\ub098\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ub8e8\ud504 \uc548\ud14c\ub098\uc5d0 \ub300\ud55c \uc774\ub7ec\ud55c \uae30\ucd08\uc801\uc778 \uc774\ud574\ub294 \uc804\uc790\uae30\ud559\uc758 \uc2e0\ube44\ub86d\uace0 \uc911\uc694\ud55c \uce21\uba74\uc5d0 \ub300\ud55c \ud0d0\uad6c\ub97c \uc2dc\uc791\ud558\ub294 \uae38\uc785\ub2c8\ub2e4. \uc774 \uc791\uc740 \uc548\ud14c\ub098\ub97c \ud1b5\ud574 \uad11\ubc94\uc704\ud55c \uc804\uc790\uae30 \ud604\uc0c1\uc758 \uc138\uacc4\ub85c\uc758 \uc5ec\ud589\uc744 \uc2dc\uc791\ud574 \ubcf4\ub294 \uac83\uc740 \uc5b4\ub5a8\uae4c\uc694?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc6d0\ub9ac \ubc0f \uc791\ub3d9, \ud2b9\uc131\uacfc \ub2e4\uc591\ud55c \uc751\uc6a9 \ubd84\uc57c\ub97c \uc124\uba85\ud558\ub294 \uc0c1\uc138\ud55c \uac00\uc774\ub4dc\ub85c \uc804\uc790\uae30 \uc720\ub3c4\ub97c \uc774\ud574\ud558\uace0 RFID, \ubb34\uc120 \ucda9\uc804\uc5d0 \uc801\uc6a9\ub418\ub294 \ubc29\uc2dd\uc744 \ubc30\uc6c1\ub2c8\ub2e4.<\/p>\n","protected":false},"author":1,"featured_media":169694,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[88],"tags":[89],"class_list":["post-146646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-88","tag-89","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\ub8e8\ud504 \uc548\ud14c\ub098 | \uc791\ub3d9 \ubc29\uc2dd, \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \ubc0f \uc7a5\uc810<\/title>\n<meta name=\"description\" content=\"\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc6d0\ub9ac \ubc0f \uc791\ub3d9, \ud2b9\uc131\uacfc \ub2e4\uc591\ud55c \uc751\uc6a9 \ubd84\uc57c\ub97c \uc124\uba85\ud558\ub294 \uc0c1\uc138\ud55c \uac00\uc774\ub4dc\ub85c \uc804\uc790\uae30 \uc720\ub3c4\ub97c \uc774\ud574\ud558\uace0 RFID, \ubb34\uc120 \ucda9\uc804\uc5d0 \uc801\uc6a9\ub418\ub294 \ubc29\uc2dd\uc744 \ubc30\uc6c1\ub2c8\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.electricity-magnetism.org\/ko\/%eb%a3%a8%ed%94%84-%ec%95%88%ed%85%8c%eb%82%98\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\ub8e8\ud504 \uc548\ud14c\ub098 | \uc791\ub3d9 \ubc29\uc2dd, \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \ubc0f \uc7a5\uc810\" \/>\n<meta property=\"og:description\" content=\"\ub8e8\ud504 \uc548\ud14c\ub098\uc758 \uc6d0\ub9ac \ubc0f \uc791\ub3d9, \ud2b9\uc131\uacfc \ub2e4\uc591\ud55c \uc751\uc6a9 \ubd84\uc57c\ub97c \uc124\uba85\ud558\ub294 \uc0c1\uc138\ud55c \uac00\uc774\ub4dc\ub85c \uc804\uc790\uae30 \uc720\ub3c4\ub97c 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