{"id":147753,"date":"2024-04-27T14:51:17","date_gmt":"2024-04-27T14:51:17","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%ec%a3%bc%ed%8c%8c%ec%88%98-%eb%b3%80%ec%a1%b0-fm-%ed%9a%8c%eb%a1%9c\/"},"modified":"2024-04-27T14:51:17","modified_gmt":"2024-04-27T14:51:17","slug":"%ec%a3%bc%ed%8c%8c%ec%88%98-%eb%b3%80%ec%a1%b0-fm-%ed%9a%8c%eb%a1%9c","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/%ec%a3%bc%ed%8c%8c%ec%88%98-%eb%b3%80%ec%a1%b0-fm-%ed%9a%8c%eb%a1%9c\/","title":{"rendered":"\uc8fc\ud30c\uc218 \ubcc0\uc870 (FM) \ud68c\ub85c"},"content":{"rendered":"<p class=\"sidekick\">\uc8fc\ud30c\uc218 \ubcc0\uc870(FM) \ud68c\ub85c\ub294 \uc815\ubcf4\ub97c \ubc18\uc1a1\ud30c \uc8fc\ud30c\uc218\uc5d0 \uc778\ucf54\ub529\ud574 \uc1a1\uc2e0\ud558\ub294 \uae30\uc220\ub85c, \ub77c\ub514\uc624 \ubc29\uc1a1\uacfc \ubb34\uc120\ud1b5\uc2e0\uc5d0\uc11c \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/04\/\uc8fc\ud30c\uc218-\ubcc0\uc870-(FM)-\ud68c\ub85c.png\" alt=\"\uc8fc\ud30c\uc218 \ubcc0\uc870 (FM) \ud68c\ub85c\"\/><\/p>\n<h2>\uc8fc\ud30c\uc218 \ubcc0\uc870 (FM) \ud68c\ub85c\ub780?<\/h2>\n<p>\uc8fc\ud30c\uc218 \ubcc0\uc870(Frequency Modulation, \uc57d\uc790 FM) \ud68c\ub85c\ub294 \uc1a1\uc2e0\ud560 \uc2e0\ud638\uc758 \uc815\ubcf4\ub97c \ubc18\uc1a1\ud30c(carrier wave)\uc758 \uc8fc\ud30c\uc218\uc5d0 \uc778\ucf54\ub529\ud558\ub294 \uc2dc\uc2a4\ud15c\uc785\ub2c8\ub2e4. FM \ud68c\ub85c\ub294 \ubc29\uc1a1, \uc74c\ud5a5 \uc804\uc1a1, \ub370\uc774\ud130 \ud1b5\uc2e0 \ub4f1 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c\ub294 FM \ud68c\ub85c\uc758 \uae30\ubcf8 \uac1c\ub150\uacfc \ud0d0\uc0c9 \ubc29\ubc95, \uadf8\ub9ac\uace0 \uc751\uc6a9\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uc8fc\ud30c\uc218 \ubcc0\uc870\uc758 \uc6d0\ub9ac<\/h2>\n<p>\uc8fc\ud30c\uc218 \ubcc0\uc870\uc5d0\uc11c\ub294 \ubc18\uc1a1\ud30c\uc758 \uc8fc\ud30c\uc218\ub97c \uc815\ubcf4 \uc2e0\ud638\uc5d0 \ub530\ub77c \ubcc0\ud654\uc2dc\ud0b5\ub2c8\ub2e4. \ubc18\uc1a1\ud30c\uc758 \uc8fc\ud30c\uc218\ub294 \uc815\ubcf4 \uc2e0\ud638\uc5d0 \ube44\ub840\ud558\uc5ec \uc99d\uac00\ud558\uac70\ub098 \uac10\uc18c\ud569\ub2c8\ub2e4. \uc774\ub97c \uc218\uc2dd\uc73c\ub85c \ud45c\ud604\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<p><i>f<sub>c<\/sub>(t) = f<sub>c<\/sub> + k<sub>f<\/sub> * m(t)<\/i><\/p>\n<p>\uc5ec\uae30\uc11c <i>f<sub>c<\/sub>(t)<\/i>\ub294 \ubcc0\uc870\ub41c \ubc18\uc1a1\ud30c\uc758 \uc8fc\ud30c\uc218, <i>f<sub>c<\/sub><\/i>\ub294 \uc6d0\ub798 \ubc18\uc1a1\ud30c\uc758 \uc8fc\ud30c\uc218, <i>k<sub>f<\/sub><\/i>\ub294 \uc8fc\ud30c\uc218 \ubcc0\uc870\uc758 \uac10\ub3c4(\ub610\ub294 \ubcc0\uc870 \uc9c0\uc218), \uadf8\ub9ac\uace0 <i>m(t)<\/i>\ub294 \uc815\ubcf4 \uc2e0\ud638(modulating signal)\uc758 \uc2dc\uac04\uc5d0 \ub530\ub978 \ud568\uc218\uc785\ub2c8\ub2e4.<\/p>\n<h2>FM \ud68c\ub85c\uc758 \uad6c\uc131 \uc694\uc18c<\/h2>\n<p>\uae30\ubcf8\uc801\uc778 FM \ud68c\ub85c\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uad6c\uc131 \uc694\uc18c\ub97c \ud3ec\ud568\ud569\ub2c8\ub2e4:<\/p>\n<ul>\n<li><strong>\uc624\uc2e4\ub808\uc774\ud130(VCO)<\/strong>: \uc804\uc555\uc774 \uc8fc\uc5b4\uc9c8 \ub54c \uc8fc\ud30c\uc218\ub97c \ubcc0\ud654\uc2dc\ud0a4\ub294 \uc804\uc790 \uae30\uae30\uc785\ub2c8\ub2e4. \uc815\ubcf4 \uc2e0\ud638\uac00 \uc774 \uc624\uc2e4\ub808\uc774\ud130\uc5d0 \uc804\ub2ec\ub418\uba74, \ucd9c\ub825\ub418\ub294 \ubc18\uc1a1\ud30c\uc758 \uc8fc\ud30c\uc218\uac00 \uc870\uc808\ub429\ub2c8\ub2e4.<\/li>\n<li><strong>\ubcc0\uc870\uae30(Modulator)<\/strong>: \uc815\ubcf4 \uc2e0\ud638\ub97c \uc801\uc808\ud55c \ud615\ud0dc\ub85c \ubc14\uafb8\uc5b4 \uc624\uc2e4\ub808\uc774\ud130\uc5d0 \uc785\ub825\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uc99d\ud3ed\uae30(Amplifier)<\/strong>: \ubcc0\uc870\ub41c \uc2e0\ud638\uc758 \uc804\ub825\uc744 \ub192\uc5ec \ub354 \uba40\ub9ac\uae4c\uc9c0 \uc2e0\ud638\ub97c \uc1a1\uc2e0\ud560 \uc218 \uc788\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ud544\ud130(Filter)<\/strong>: \uc6d0\uce58 \uc54a\ub294 \ub178\uc774\uc988\ub97c \uc81c\uac70\ud558\uace0, \uc6d0\ud558\ub294 \uc2e0\ud638\ub9cc \ud1b5\uacfc\uc2dc\ud0a4\uae30 \uc704\ud574 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uc548\ud14c\ub098(Antenna)<\/strong>: \ubcc0\uc870\ub41c \uc2e0\ud638\ub97c \uc804\ud30c\ub85c \ubcc0\ud658\ud558\uc5ec \uacf5\uae30\ub97c \ud1b5\ud574 \uc1a1\uc2e0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>FM \ud68c\ub85c\uc758 \uc8fc\uc694 \ud2b9\uc131<\/h2>\n<p>FM \ud68c\ub85c\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc8fc\uc694 \ud2b9\uc131\uc744 \uac00\uc9d1\ub2c8\ub2e4:<\/p>\n<ol>\n<li><strong>\ub192\uc740 \uc2e0\ud638 \ub300 \uc7a1\uc74c\ube44(Signal-to-Noise Ratio, SNR)<\/strong>: \ub178\uc774\uc988\uc5d0 \ub300\ud55c FM \uc2e0\ud638\uc758 \uc800\ud56d\uc131\uc774 \uc544\ub0a0\ub85c\uadf8 AM(\uc9c4\ud3ed \ubcc0\uc870) \uc2e0\ud638\ubcf4\ub2e4 \ud6e8\uc52c \uc6b0\uc218\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ub300\uc5ed\ud3ed \ud65c\uc6a9<\/strong>: FM\uc740 AM\uc5d0 \ube44\ud574 \ub354 \ub113\uc740 \uc8fc\ud30c\uc218 \ub300\uc5ed\uc744 \uc0ac\uc6a9\ud558\uc5ec, \ub354 \ub192\uc740 \ud488\uc9c8\uc758 \uc1a1\uc218\uc2e0\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\uc2a4\ud14c\ub808\uc624 \ubc29\uc1a1\uc758 \uac00\ub2a5\uc131<\/strong>: \ub450 \uac1c \uc774\uc0c1\uc758 \ucc44\ub110\uc744 \ub3d9\uc2dc\uc5d0 \uc804\uc1a1\ud560 \uc218 \uc788\uc5b4, \uc2a4\ud14c\ub808\uc624 \uc624\ub514\uc624 \ubc29\uc1a1\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>FM \ud68c\ub85c\uc758 \uc751\uc6a9<\/h2>\n<p>FM \ud68c\ub85c\ub294 \ub2e4\uc591\ud55c \ud615\ud0dc\ub85c \uc6b0\ub9ac \uc77c\uc0c1\uc5d0 \ud65c\uc6a9\ub429\ub2c8\ub2e4. \uba87 \uac00\uc9c0 \uc8fc\uc694\ud55c \uc608\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li><u>\ub77c\ub514\uc624 \ubc29\uc1a1<\/u>: \uac00\uc7a5 \uc77c\ubc18\uc801\uc774\uace0 \uc798 \uc54c\ub824\uc9c4 FM\uc758 \uc0ac\uc6a9 \uc0ac\ub840\ub85c, \uace0\ud488\uc9c8\uc758 \uc624\ub514\uc624 \ubc29\uc1a1\uc744 \uac00\ub2a5\ud558\uac8c \ud569\ub2c8\ub2e4.<\/li>\n<li><u>\ubb34\uc120\ud1b5\uc2e0 \uc2dc\uc2a4\ud15c<\/u>: \ud734\ub300\ud3f0, \ubb34\uc804\uae30 \ub4f1\uc5d0\uc11c \uc1a1\uc218\uc2e0\ub418\ub294 \uc74c\uc131\uc774\ub098 \ub370\uc774\ud130\uc5d0 FM \ud68c\ub85c\uac00 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/li>\n<li><u>\uc704\uc131 \ud1b5\uc2e0<\/u>: TV \ubc29\uc1a1\uc774\ub098 GPS \ub370\uc774\ud130 \uc804\uc1a1\uc5d0\uc11c FM\uc774 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774\ub294 FM\uc774 \uc7a5\uac70\ub9ac \ud1b5\uc2e0\uc5d0\uc11c\ub3c4 \uc548\uc815\uc801\uc778 \uc131\ub2a5\uc744 \ubcf4\uc774\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p>\uc774\ucc98\ub7fc FM \ud68c\ub85c\ub294 \ud604\ub300 \ud1b5\uc2e0\uc5d0\uc11c \ud544\uc218\uc801\uc778 \uc5ed\ud560\uc744 \ud558\uba70, \ud5a5\ud6c4 \ub354 \ubc1c\uc804\ud560 \uac83\uc73c\ub85c \uae30\ub300\ub429\ub2c8\ub2e4. \uc55e\uc11c \uc124\uba85\ud55c FM\uc758 \uae30\ubcf8 \uc6d0\ub9ac\ub97c \uc774\ud574\ud558\uba74, \uc804\uc790\uae30\ud559\uc758 \uc911\uc694\ud55c \uce21\uba74\uc744 \uae4a\uac8c \ud0d0\uad6c\ud560 \uc218 \uc788\ub294 \uae30\ud68c\ub97c \uac16\uac8c \ub429\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc8fc\ud30c\uc218 \ubcc0\uc870(FM) \ud68c\ub85c\ub294 \uc815\ubcf4\ub97c \ubc18\uc1a1\ud30c \uc8fc\ud30c\uc218\uc5d0 \uc778\ucf54\ub529\ud574 \uc1a1\uc2e0\ud558\ub294 \uae30\uc220\ub85c, \ub77c\ub514\uc624 \ubc29\uc1a1\uacfc \ubb34\uc120\ud1b5\uc2e0\uc5d0\uc11c \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n","protected":false},"author":1,"featured_media":179521,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[88],"tags":[89],"class_list":["post-147753","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>\uc8fc\ud30c\uc218 \ubcc0\uc870 (FM) \ud68c\ub85c | \uc791\ub3d9 \ubc29\uc2dd, \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8 \ubc0f \uc7a5\uc810<\/title>\n<meta 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