{"id":147853,"date":"2024-04-27T15:05:05","date_gmt":"2024-04-27T15:05:05","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%ec%a4%91%ea%b0%84-%ec%a3%bc%ed%8c%8c%ec%88%98-%ec%a6%9d%ed%8f%ad%ea%b8%b0\/"},"modified":"2024-04-27T15:05:05","modified_gmt":"2024-04-27T15:05:05","slug":"%ec%a4%91%ea%b0%84-%ec%a3%bc%ed%8c%8c%ec%88%98-%ec%a6%9d%ed%8f%ad%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/%ec%a4%91%ea%b0%84-%ec%a3%bc%ed%8c%8c%ec%88%98-%ec%a6%9d%ed%8f%ad%ea%b8%b0\/","title":{"rendered":"\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30"},"content":{"rendered":"<p class=\"sidekick\">\uc774 \uae30\uc0ac\ub294 \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc5ed\ud560, \uc791\ub3d9 \uc6d0\ub9ac, \uc911\uc694\uc131 \ubc0f \ucd5c\uc2e0 \uae30\uc220 \ub3d9\ud5a5\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc124\uba85\ud569\ub2c8\ub2e4. \ubb34\uc120 \ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc758 \ud575\uc2ec \ubd80\ud488\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc138\uc694.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/04\/\uc911\uac04-\uc8fc\ud30c\uc218-\uc99d\ud3ed\uae30.png\" alt=\"\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\"\/><\/p>\n<h2>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub780?<\/h2>\n<p>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30(IF \uc99d\ud3ed\uae30)\ub294 \ubb34\uc120 \ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\ub294 \uc804\uc790\uc7a5\uce58\uc785\ub2c8\ub2e4. \uc774 \uc99d\ud3ed\uae30\uc758 \uc8fc\uc694 \uae30\ub2a5\uc740 \uc2e0\ud638\uc758 \ud2b9\uc815 \uc8fc\ud30c\uc218 \ub300\uc5ed\uc744 \uc99d\ud3ed\ud558\ub294 \uac83\uc73c\ub85c, \uc8fc\ub85c \ubb34\uc120 \uc218\uc2e0\uae30\uc640 \uac19\uc740 \ud1b5\uc2e0 \uc7a5\ube44\uc5d0\uc11c \ucc3e\uc544\ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub294 \uace0\uc8fc\ud30c \uc2e0\ud638\ub97c \ub354 \ucde8\uae09\ud558\uae30 \uc26c\uc6b4 \uc8fc\ud30c\uc218\ub85c \ubcc0\ud658\ud55c \ud6c4 \uc774\ub97c \uc99d\ud3ed\uc2dc\ud0a4\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<h2>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc791\ub3d9 \uc6d0\ub9ac<\/h2>\n<p>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc791\ub3d9 \uc6d0\ub9ac\ub294 \uac04\ub2e8\ud569\ub2c8\ub2e4. \uba3c\uc800, \uc548\ud14c\ub098\ub97c \ud1b5\ud574 \uc218\uc2e0\ub41c \uace0\uc8fc\ud30c \uc2e0\ud638\ub294 \ud63c\ud569\uae30(mixer)\uc5d0 \uc758\ud574 \uc911\uac04 \uc8fc\ud30c\uc218(IF)\ub85c \ubcc0\ud658\ub429\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc5d0\uc11c \uc6d0\ub798 \uc2e0\ud638\uc758 \uc8fc\ud30c\uc218(f<sub>signal<\/sub>)\uc640 \ub85c\uceec \uc624\uc2e4\ub808\uc774\ud130(local oscillator, LO)\uc758 \uc8fc\ud30c\uc218(f<sub>LO<\/sub>)\uac00 \uacb0\ud569\ub418\uc5b4 IF\uac00 \uc0dd\uc131\ub429\ub2c8\ub2e4. \uc774\ub54c IF\ub294 \uc77c\ubc18\uc801\uc73c\ub85c f<sub>IF<\/sub> = |f<sub>signal<\/sub> &#8211; f<sub>LO<\/sub>|\ub85c \uacc4\uc0b0\ub429\ub2c8\ub2e4. \uc911\uac04 \uc8fc\ud30c\uc218\ub294 \uc0c1\ub300\uc801\uc73c\ub85c \ub0ae\uc740 \uc8fc\ud30c\uc218\uc774\uba70, \uc774\ub97c \uc99d\ud3ed\ud558\uae30 \uc27d\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc911\uc694\uc131<\/h2>\n<p>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub294 \ubb34\uc120 \uc218\uc2e0\uae30\uc758 \uc131\ub2a5\uc5d0 \uc911\ub300\ud55c \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. \uc774 \uc99d\ud3ed\uae30\ub97c \ud1b5\ud574 \uc2e0\ud638\uc758 \uac15\ub3c4\ub97c \uc99d\ud3ed\uc2dc\ud0a4\uace0, \ub3d9\uc2dc\uc5d0 \uc7a1\uc74c\uc744 \ucd5c\uc18c\ud654\ud568\uc73c\ub85c\uc368 \uc2e0\ud638\uc758 \uc9c8\uc744 \uac1c\uc120\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub610\ud55c, \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub294 \uc8fc\ud30c\uc218 \uc120\ud0dd\uc131\uc744 \uc81c\uacf5\ud558\uc5ec \uc6d0\uce58 \uc54a\ub294 \uc2e0\ud638\ub098 \uac04\uc12d\uc744 \uc81c\uac70\ud558\ub294 \ub370\uc5d0\ub3c4 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<h2>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uad6c\uc131 \uc694\uc18c<\/h2>\n<ul>\n<li><strong>\ud63c\ud569\uae30(Mixer):<\/strong> \uace0\uc8fc\ud30c \uc2e0\ud638\ub97c \uc911\uac04 \uc8fc\ud30c\uc218\ub85c \ubcc0\ud658\ud558\ub294 \uc7a5\uce58.<\/li>\n<li><strong>\ud544\ud130(Filter):<\/strong> \uc6d0\ud558\ub294 \uc2e0\ud638\ub9cc\uc744 \ud1b5\uacfc\uc2dc\ud0a4\uace0, \uc7a1\uc74c\uc774\ub098 \uac04\uc12d \uc2e0\ud638\ub97c \ucc28\ub2e8\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uc99d\ud3ed\uae30(Amplifier):<\/strong> \uc911\uac04 \uc8fc\ud30c\uc218 \uc2e0\ud638\ub97c \uc99d\ud3ed\uc2dc\ud0a4\ub294 \uc7a5\uce58.<\/li>\n<\/ul>\n<p>\uc774\ub7ec\ud55c \uad6c\uc131 \uc694\uc18c\ub4e4\uc774 \uacb0\ud569\ud558\uc5ec \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub294 \ubb34\uc120 \ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ud575\uc2ec\uc801\uc778 \uc5ed\ud560\uc744 \uc218\ud589\ud558\uac8c \ub429\ub2c8\ub2e4. \ub2e4\uc74c \ubd80\ubd84\uc5d0\uc11c\ub294 \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \ub2e4\uc591\ud55c \uc751\uc6a9\uacfc \ucd5c\uc2e0 \uae30\uc220 \ub3d9\ud5a5\uc5d0 \ub300\ud574 \ub354 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc751\uc6a9 \ubd84\uc57c<\/h2>\n<p>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub294 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \ud65c\uc6a9\ub429\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ubb34\uc120 \ud1b5\uc2e0, \uc704\uc131 \ud1b5\uc2e0, \ub808\uc774\ub354 \uc2dc\uc2a4\ud15c, \uadf8\ub9ac\uace0 \ubb34\uc120 \ubc29\uc1a1 \uc218\uc2e0\uae30 \ub4f1\uc5d0\uc11c \uc774 \uc99d\ud3ed\uae30\uc758 \uc911\uc694\uc131\uc740 \ub9e4\uc6b0 \ud07d\ub2c8\ub2e4. \ud2b9\ud788 \ud1b5\uc2e0 \ubd84\uc57c\uc5d0\uc11c\ub294 \uc2e0\ud638\uc758 \uc9c8\uacfc \uc548\uc815\uc131\uc744 \uc720\uc9c0\ud558\ub294 \ub370 \ud544\uc218\uc801\uc778 \ubd80\ud488\uc73c\ub85c \uc5ec\uaca8\uc9d1\ub2c8\ub2e4. \ub610\ud55c, \ucca8\ub2e8 \ubb34\uc120 \ud1b5\uc2e0 \uae30\uc220\uc778 5G \ubc0f 6G\uc5d0\uc11c\uc758 \uc5ed\ud560\ub3c4 \uc810\ucc28 \uc911\uc694\ud574\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uae30\uc220 \ub3d9\ud5a5<\/h2>\n<p>\ucd5c\uadfc\uc5d0\ub294 \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uae30\uc220\uc774 \ub354\uc6b1 \ubc1c\uc804\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub354 \uc791\uace0 \ud6a8\uc728\uc801\uc778 \ub514\uc790\uc778, \ub354 \ub192\uc740 \uc8fc\ud30c\uc218 \ub300\uc5ed\uc758 \ucc98\ub9ac \ub2a5\ub825, \uadf8\ub9ac\uace0 \ub354 \ub0ae\uc740 \uc804\ub825 \uc18c\ube44 \ub4f1\uc774 \uc5f0\uad6c \ubc0f \uac1c\ubc1c\uc758 \uc911\uc810\uc774 \ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubc1c\uc804\uc740 \ubb34\uc120 \ud1b5\uc2e0 \uae30\uc220\uc758 \uc9c4\ubcf4\uc5d0 \ub9de\ucd94\uc5b4 \ub04a\uc784\uc5c6\uc774 \uc9c4\ud654\ud558\uace0 \uc788\uc73c\uba70, \uc774\ub97c \ud1b5\ud574 \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc758 \uc9c8\uc744 \ud5a5\uc0c1\uc2dc\ud0a4\ub294 \ub370 \uae30\uc5ec\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uacb0\ub860<\/h2>\n<p>\uacb0\ub860\uc801\uc73c\ub85c, \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub294 \ubb34\uc120 \ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc758 \ud575\uc2ec \ubd80\ud488\uc73c\ub85c\uc11c \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774 \uc99d\ud3ed\uae30\ub294 \uc2e0\ud638\uc758 \uc9c8\uc744 \uac1c\uc120\ud558\uace0, \uc7a1\uc74c\uc744 \ucd5c\uc18c\ud654\ud558\uba70, \uc8fc\ud30c\uc218 \uc120\ud0dd\uc131\uc744 \uc81c\uacf5\ud568\uc73c\ub85c\uc368 \ud1b5\uc2e0\uc758 \uc548\uc815\uc131\uacfc \ud6a8\uc728\uc131\uc744 \ud06c\uac8c \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. \ub610\ud55c, \uc9c0\uc18d\uc801\uc778 \uae30\uc220 \ubc1c\uc804\uc744 \ud1b5\ud574 \ub354\uc6b1 \ud6a8\uc728\uc801\uc774\uace0 \uace0\uc131\ub2a5\uc758 \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uac00 \uac1c\ubc1c\ub418\uace0 \uc788\uc5b4, \ud5a5\ud6c4 \ubb34\uc120 \ud1b5\uc2e0 \uae30\uc220\uc758 \ubc1c\uc804\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce60 \uac83\uc73c\ub85c \uae30\ub300\ub429\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\ub294 \ud1b5\uc2e0 \uae30\uc220\uc758 \ubc1c\uc804\uc744 \uc704\ud55c \uc5f0\uad6c \ubc0f \uac1c\ubc1c\uc5d0 \uc788\uc5b4 \ud56d\uc0c1 \uc911\uc694\ud55c \uc694\uc18c\ub85c \ub0a8\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc774 \uae30\uc0ac\ub294 \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc5ed\ud560, \uc791\ub3d9 \uc6d0\ub9ac, \uc911\uc694\uc131 \ubc0f \ucd5c\uc2e0 \uae30\uc220 \ub3d9\ud5a5\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc124\uba85\ud569\ub2c8\ub2e4. \ubb34\uc120 \ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc758 \ud575\uc2ec \ubd80\ud488\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc138\uc694.<\/p>\n","protected":false},"author":1,"featured_media":180421,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[88],"tags":[89],"class_list":["post-147853","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>\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30 | \uc791\ub3d9 \ubc29\uc2dd, \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \ubc0f \uc7a5\uc810<\/title>\n<meta name=\"description\" content=\"\uc774 \uae30\uc0ac\ub294 \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc5ed\ud560, \uc791\ub3d9 \uc6d0\ub9ac, \uc911\uc694\uc131 \ubc0f \ucd5c\uc2e0 \uae30\uc220 \ub3d9\ud5a5\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc124\uba85\ud569\ub2c8\ub2e4. \ubb34\uc120 \ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc758 \ud575\uc2ec \ubd80\ud488\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc138\uc694.\" \/>\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\/%ec%a4%91%ea%b0%84-%ec%a3%bc%ed%8c%8c%ec%88%98-%ec%a6%9d%ed%8f%ad%ea%b8%b0\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30 | \uc791\ub3d9 \ubc29\uc2dd, \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \ubc0f \uc7a5\uc810\" \/>\n<meta property=\"og:description\" content=\"\uc774 \uae30\uc0ac\ub294 \uc911\uac04 \uc8fc\ud30c\uc218 \uc99d\ud3ed\uae30\uc758 \uc5ed\ud560, \uc791\ub3d9 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content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Matan\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.electricity-magnetism.org\/ko\/#website\",\"url\":\"https:\/\/www.electricity-magnetism.org\/ko\/\",\"name\":\"Electricity - Magnetism\",\"description\":\"All about electricity and magnetism.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.electricity-magnetism.org\/ko\/?s={search_term_string}\"},\"query-input\":\"required 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