{"id":146768,"date":"2024-04-27T12:39:26","date_gmt":"2024-04-27T12:39:26","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%ec%9c%84%ec%84%b1-lnb-%ec%a0%80%ec%9e%a1%ec%9d%8c-%eb%b8%94%eb%a1%9d-%eb%8b%a4%ec%9a%b4%ec%bb%a8%eb%b2%84%ed%84%b0\/"},"modified":"2024-04-27T12:39:33","modified_gmt":"2024-04-27T12:39:33","slug":"%ec%9c%84%ec%84%b1-lnb-%ec%a0%80%ec%9e%a1%ec%9d%8c-%eb%b8%94%eb%a1%9d-%eb%8b%a4%ec%9a%b4%ec%bb%a8%eb%b2%84%ed%84%b0","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/%ec%9c%84%ec%84%b1-lnb-%ec%a0%80%ec%9e%a1%ec%9d%8c-%eb%b8%94%eb%a1%9d-%eb%8b%a4%ec%9a%b4%ec%bb%a8%eb%b2%84%ed%84%b0\/","title":{"rendered":"\uc704\uc131 LNB (\uc800\uc7a1\uc74c \ube14\ub85d \ub2e4\uc6b4\ucee8\ubc84\ud130)"},"content":{"rendered":"<p class=\"sidekick\">\uc704\uc131 \uc811\uc2dc\uc5d0 \ud544\uc218\uc801\uc778 LNB\uc5d0 \ub300\ud55c \uc124\uba85\uc73c\ub85c, \uc704\uc131 \uc2e0\ud638\uc758 \uc99d\ud3ed \ubc0f \ubcc0\ud658\uc744 \ub2f4\ub2f9\ud558\uba70 \ud488\uc9c8 \uc720\uc9c0\uc5d0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\ub294 \uc7a5\uce58\uc785\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/04\/\uc704\uc131-LNB-(\uc800\uc7a1\uc74c-\ube14\ub85d-\ub2e4\uc6b4\ucee8\ubc84\ud130).png\" alt=\"\uc704\uc131 LNB (\uc800\uc7a1\uc74c \ube14\ub85d \ub2e4\uc6b4\ucee8\ubc84\ud130)\"\/><\/p>\n<h2>\uc704\uc131 LNB(\uc800\uc7a1\uc74c \ube14\ub85d \ub2e4\uc6b4\ucee8\ubc84\ud130)\ub780 \ubb34\uc5c7\uc778\uac00?<\/h2>\n<p>\uc704\uc131 \ubc29\uc1a1\uc744 \ubc1b\uae30 \uc704\ud574 \uac00\uc815\uc774\ub098 \uc5c5\uc18c\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 \uc811\uc2dc\ud615 \uc548\ud14c\ub098(\uc704\uc131 \uc811\uc2dc)\uc5d0 \ubd80\ucc29\ub418\ub294 \uc911\uc694\ud55c \ubd80\ud488\uc774 \ubc14\ub85c LNB(\uc800\uc7a1\uc74c \ube14\ub85d \ub2e4\uc6b4\ucee8\ubc84\ud130, Low Noise Block downconverter)\uc785\ub2c8\ub2e4. LNB\uc758 \ud575\uc2ec \uae30\ub2a5\uc740 \uc704\uc131\uc5d0\uc11c \ubc1c\uc2e0\ud558\ub294 \uace0\uc8fc\ud30c \uc2e0\ud638\ub97c \uc800\uc8fc\ud30c \uc2e0\ud638\ub85c \ubcc0\ud658\ud558\uc5ec, \uc77c\ubc18 \uac00\uc815\uc758 \uc14b\ud1b1\ubc15\uc2a4\ub098 \uc704\uc131\uc218\uc2e0\uae30\uac00 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ud615\ud0dc\ub85c \ub9cc\ub4dc\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774 \uacfc\uc815\uc740 \uc704\uc131 TV \uc2dc\uccad\uc5d0 \uc788\uc5b4 \ud544\uc218\uc801\uc778 \ub2e8\uacc4\ub85c\uc11c, \ucd5c\uc801\uc758 \uc2e0\ud638 \ud488\uc9c8\uc744 \uc720\uc9c0\ud558\ub294 \ub370 \uc788\uc5b4 LNB\uc758 \uc5ed\ud560\uc740 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h2>LNB\uc758 \uc791\ub3d9 \uc6d0\ub9ac<\/h2>\n<p>LNB\ub294 \uae30\ubcf8\uc801\uc73c\ub85c \ub450 \ubd80\ubd84\uc73c\ub85c \ub098\ub20c \uc218 \uc788\uc2b5\ub2c8\ub2e4: \uc800\uc7a1\uc74c \uc99d\ud3ed\uae30(LNA)\uc640 \ub2e4\uc6b4\ucee8\ubc84\ud130. \uc704\uc131\uc5d0\uc11c \uc804\uc1a1\ub418\ub294 \uc2e0\ud638\ub294 \uc0c1\ub2f9\ud788 \uc57d\ud558\uba70, \uc6b0\uc8fc\uc640 \ub300\uae30\ub97c \ud1b5\uacfc\ud558\uba74\uc11c \ub354 \uc57d\ud574\uc9c0\ubbc0\ub85c, \uc774\ub97c \uac10\uc9c0\ud558\uace0 \uc99d\ud3ed\ud558\ub294 \uac83\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<ul>\n<li><b>\uc800\uc7a1\uc74c \uc99d\ud3ed\uae30(LNA)<\/b><br \/>\n\uc6b0\uc120, \uc704\uc131 \uc2e0\ud638\ub97c \ucd5c\ucd08\ub85c \ubc1b\ub294 \uc800\uc7a1\uc74c \uc99d\ud3ed\uae30\ub294 \ub9d0 \uadf8\ub300\ub85c \uc7a1\uc74c\uc774 \uc544\uc8fc \uc801\uc740 \uc99d\ud3ed\uae30\ub97c \ub9d0\ud569\ub2c8\ub2e4. &#8216;\uc800\uc7a1\uc74c&#8217;\uc774\ub77c\ub294 \uc6a9\uc5b4\ub294 \uc99d\ud3ed \uacfc\uc815\uc5d0\uc11c \uc0dd\uae30\ub294 \ucd94\uac00\uc801\uc778 \ub178\uc774\uc988\ub97c \ucd5c\uc18c\ud654\ud55c\ub2e4\ub294 \uc758\ubbf8\ub97c \ub0b4\ud3ec\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc218\uc2e0\ub41c \uc2e0\ud638\uc758 \ud488\uc9c8\uc744 \ud574\uce58\uc9c0 \uc54a\uc73c\uba74\uc11c \uc2e0\ud638\ub97c \uc99d\ud3ed\ud560 \uc218 \uc788\uc5b4\uc57c \ud558\uae30 \ub54c\ubb38\uc5d0 \uc911\uc694\ud55c \uae30\ub2a5\uc785\ub2c8\ub2e4.<\/li>\n<li><b>\ub2e4\uc6b4\ucee8\ubc84\ud130<\/b><br \/>\n\uc99d\ud3ed\ub41c \uc2e0\ud638\ub294 \ub2e4\uc6b4\ucee8\ubc84\ud130\ub97c \uac70\uce69\ub2c8\ub2e4. \ub2e4\uc6b4\ucee8\ubc84\ud130\ub294 \uc8fc\ud30c\uc218\ub97c \ub2e4\uc6b4\ub9c1\ud06c \uc8fc\ud30c\uc218\uc5d0\uc11c \ub0ae\uc740 \uc8fc\ud30c\uc218\uc758 IF(Intermediate frequency, \uc911\uac04 \uc8fc\ud30c\uc218) \ub300\uc5ed\uc73c\ub85c \ubcc0\ud658\ud558\ub294 \uc7a5\uce58\uc785\ub2c8\ub2e4. \uc99d\ud3ed\ub41c \uc2e0\ud638\ub294 \uc5ec\uae30\uc5d0\uc11c \uc9c0\uc5ed\ubc1c\uc9c4\uae30(LO, Local Oscillator)\uc5d0 \uc758\ud574 \ubcc0\uc870\ub418\uc5b4, \uadf8 \uc8fc\ud30c\uc218\uac00 \ub0ae\ucdb0\uc9d1\ub2c8\ub2e4. \uc774\ub807\uac8c \uc8fc\ud30c\uc218\uac00 \ub0ae\uc544\uc9c4 \uc2e0\ud638\ub294 \ucf00\uc774\ube14\uc744 \ud1b5\ud574 TV\ub098 \uc218\uc2e0\uae30\ub85c \uc804\uc1a1\ub418\uc5b4 \uacb0\uad6d \uc6b0\ub9ac\uac00 \ubcfc \uc218 \uc788\ub294 \uc601\uc0c1 \ubc0f \uc18c\ub9ac\ub85c \ubcc0\ud658\ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>LNB\uc758 \uc911\uc694\uc131<\/h2>\n<p>LNB\ub294 \uc704\uc131 \ubc29\uc1a1 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc2e0\ud638\uc758 \ud488\uc9c8\uacfc \uc704\uc131 \uc218\uc2e0\uc758 \uc2e0\ub8b0\uc131\uc740 LNB\uc758 \uc131\ub2a5\uc5d0 \ud06c\uac8c \uc758\uc874\ud558\ub294\ub370, \ub2e4\uc74c\uacfc \uac19\uc740 \uba87 \uac00\uc9c0 \uc694\uc18c\uac00 LNB\uc758 \uc911\uc694\uc131\uc5d0 \uae30\uc5ec\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<ol>\n<li><u>\uc2e0\ud638\uc758 \uc99d\ud3ed<\/u>: \uc55e\uc11c \uc5b8\uae09\ud55c \ub300\ub85c, \uc704\uc131\uc5d0\uc11c \uc804\uc1a1\ub41c \uc2e0\ud638\ub294 \ub9e4\uc6b0 \uc57d\ud569\ub2c8\ub2e4. \uadf8\ub807\uae30 \ub54c\ubb38\uc5d0 \uc99d\ud3ed \uc5c6\uc774\ub294 \uc218\uc2e0\uae30\uac00 \uc774\ub97c \uc81c\ub300\ub85c \uc778\uc2dd\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. LNB\uc758 LNA \ubd80\ubd84\uc740 \uc2e0\ud638\ub97c \ucda9\ubd84\ud788 \uc99d\ud3ed\uc2dc\ucf1c \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc88b\uc740 \ud488\uc9c8\uc758 \ubc29\uc1a1\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/li>\n<li><u>\uc8fc\ud30c\uc218 \ubcc0\ud658<\/u>: LNB\uc758 \ub2e4\uc6b4\ucee8\ubc84\ud130\ub294 \uc2e0\ud638\ub97c \ub0ae\uc740 \uc8fc\ud30c\uc218\ub85c \ubcc0\ud658\ud558\uc5ec, \ucf00\uc774\ube14 \uc190\uc2e4\uc744 \uc904\uc774\uace0, \uc218\uc2e0\uae30\uac00 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ubc94\uc704\uc758 \uc2e0\ud638\ub85c \ub9cc\ub4ed\ub2c8\ub2e4.<\/li>\n<li><u>\uc7a1\uc74c \ucd5c\uc18c\ud654<\/u>: LNB\ub294 \uc800\uc7a1\uc74c\uc744 \uc790\ub791\ud569\ub2c8\ub2e4. \ub192\uc740 \uc7a1\uc74c \uc218\uce58\ub294 \uc2e0\ud638 \ud488\uc9c8\uc744 \uc800\ud558\uc2dc\ud0a4\uace0 \uc624\ub958\ub97c \ubc1c\uc0dd\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c LNB\ub294 \uc774\ub7ec\ud55c \uc7a1\uc74c\uc744 \ucd5c\uc18c\ud654\ud558\uc5ec \uae68\ub057\ud55c \uc2e0\ud638 \uc804\uc1a1\uc744 \ub3c4\uc640\uc90d\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>LNB\uc758 \uae30\uc220\uc801 \ud2b9\uc131<\/h2>\n<p>LNB\ub294 \uc5ec\ub7ec \uae30\uc220\uc801 \ud2b9\uc131\uc744 \uac16\ucd94\uace0 \uc788\uc73c\uba70, \uc774\ub294 \uc704\uc131 \uc218\uc2e0\uae30\uc758 \uc131\ub2a5\uc5d0 \uc601\ud5a5\uc744 \uc90d\ub2c8\ub2e4. \uac00\uc7a5 \uc911\uc694\ud55c \ud2b9\uc131 \uc911 \ud558\ub098\ub294 \uc7a1\uc74c \uc9c0\uc218(Noise Figure, NF)\ub85c, \uc774\ub294 LNB\uac00 \uc5bc\ub9c8\ub098 \uc801\uc740 \uc7a1\uc74c\uc744 \ucd94\uac00\ud558\ub294\uc9c0\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \ub0ae\uc740 \uc7a1\uc74c \uc9c0\uc218\ub294 \ub354 \uc88b\uc740 \uc2e0\ud638 \ud488\uc9c8\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \ub610\ud55c, \uc774\ub4dd(Gain)\uc740 \uc2e0\ud638\ub97c \uc5bc\ub9c8\ub098 \ub9ce\uc774 \uc99d\ud3ed\uc2dc\ud0ac \uc218 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b8 \uac83\uc73c\ub85c, \ubcf4\ud1b5 50dB\uc5d0\uc11c 70dB \uc0ac\uc774\uc758 \uac12\uc744 \uac00\uc9d1\ub2c8\ub2e4. \uc9c0\uc5ed \ubc1c\uc9c4\uae30(LO)\uc758 \uc548\uc815\uc131\ub3c4 \uc911\uc694\ud55c\ub370, \uc774\ub294 \uc8fc\ud30c\uc218 \ubcc0\ud658\uc758 \uc815\ud655\uc131\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4. \ub192\uc740 \uc548\uc815\uc131\uc740 \uc8fc\ud30c\uc218 \uc774\ub3d9\uc744 \ubc29\uc9c0\ud558\uace0 \uc2e0\ud638\uc758 \uc9c8\uc744 \uc720\uc9c0\ud558\ub294\ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n<h2>LNB \uc885\ub958\uc640 \uc120\ud0dd<\/h2>\n<p>\uc5ec\ub7ec \uc885\ub958\uc758 LNB\uac00 \uc788\uc73c\uba70, \uac01\uae30 \ub2e4\ub978 \uc704\uc131\ubc29\uc1a1 \uc694\uad6c\uc0ac\ud56d\uc744 \ucda9\uc871\uc2dc\ud0b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub2e8\uc77c LNB\ub294 \ud558\ub098\uc758 \uc218\uc2e0\uae30\ub9cc \uc5f0\uacb0\ud560 \uc218 \uc788\uc9c0\ub9cc, \uc720\ub2c8\ubc84\uc15c LNB\ub294 \uc5ec\ub7ec \ub300\uc5ed\uacfc \ub2e4\uc218\uc758 \uc218\uc2e0\uae30\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4. \ub610\ud55c, \ub2e4\ucd9c\ub825 LNB(Multi-output LNB)\ub294 \ud55c LNB\ub97c \uc0ac\uc6a9\ud574 \uc5ec\ub7ec \uc218\uc2e0\uae30\uc5d0 \uc2e0\ud638\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. LNB\ub97c \uc120\ud0dd\ud560 \ub54c\ub294 \uc218\uc2e0\ud558\uace0\uc790 \ud558\ub294 \uc704\uc131\ubc29\uc1a1\uc758 \uc885\ub958, \uc124\uce58\ud560 \uc218\uc2e0\uae30\uc758 \uac2f\uc218, \uadf8\ub9ac\uace0 \uc57c\uc678 \uae30\ud6c4 \uc870\uac74 \ub4f1\uc744 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h2>\uacb0\ub860<\/h2>\n<p>LNB\ub294 \uc6b0\ub9ac\uac00 \uc704\uc131 TV\ub97c \uc2dc\uccad\ud560 \uc218 \uc788\uac8c \ud558\ub294 \ud575\uc2ec\uc801\uc778 \uae30\uc220\uc785\ub2c8\ub2e4. \uc808\ubb18\ud558\uac8c \uc124\uacc4\ub41c \uc800\uc7a1\uc74c \uc99d\ud3ed\uae30(LNA)\uc640 \ub2e4\uc6b4\ucee8\ubc84\ud130\uac00 \uacb0\ud569\ud558\uc5ec \uc57d\ud55c \uc704\uc131 \uc2e0\ud638\ub97c \uc99d\ud3ed\ud558\uace0, \ub0ae\uc740 \uc8fc\ud30c\uc218\ub85c \ubcc0\ud658\ud558\uc5ec \uc6b0\ub9ac\uc758 \uac00\uc815\uae4c\uc9c0 \uc548\uc815\uc801\uc73c\ub85c \uc804\ub2ec\ud569\ub2c8\ub2e4. \uc9c0\uc5ed\ubc1c\uc9c4\uae30(LO)\uc758 \uc548\uc815\uc131\uacfc \uc7a1\uc74c \uc9c0\uc218, \uadf8\ub9ac\uace0 \uc774\ub4dd\uacfc \uac19\uc740 \uae30\uc220\uc801 \ud2b9\uc131\uc740 \uc6b0\uc218\ud55c LNB\ub97c \ud3c9\uac00\ud558\ub294\ub370 \uc911\uc694\ud55c \uae30\uc900\uc774 \ub429\ub2c8\ub2e4. LNB\uc758 \uc120\ud0dd\uc740 \uc704\uc131\ubc29\uc1a1 \uc218\uc2e0\uc758 \uc9c8\uacfc \uc9c1\uc811\uc801\uc73c\ub85c \uc5f0\uad00\ub418\ubbc0\ub85c, \uc704\uc131\ubc29\uc1a1\uc744 \ubc1b\uace0\uc790 \ud560 \ub54c \uc8fc\uc758 \uae4a\uac8c \uc120\ud0dd\ud574\uc57c \ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c LNB\uc758 \uae30\ub2a5\uacfc \uc911\uc694\uc131\uc744 \uc774\ud574\ud568\uc73c\ub85c\uc368, \uc6b0\ub9ac\ub294 \ub354 \ud48d\ubd80\ud558\uace0 \ub2e4\uc591\ud55c \ubc29\uc1a1 \ucee8\ud150\uce20\ub97c \uc27d\uace0 \ud3b8\ub9ac\ud558\uac8c \uc990\uae38 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc704\uc131\ubc29\uc1a1\uc758 \ub180\ub77c\uc6b4 \uc138\uacc4\ub85c \uc5ec\ub7ec\ubd84\uc744 \ucd08\ub300\ud558\ub294 \uac83\uc740 \ubc14\ub85c \uc774 \uc791\uc9c0\ub9cc \uac15\ub825\ud55c LNB \ub355\ubd84\uc784\uc744 \uc78a\uc9c0 \ub9d0\uc544\uc57c \ud560 \uac83\uc785\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc704\uc131 \uc811\uc2dc\uc5d0 \ud544\uc218\uc801\uc778 LNB\uc5d0 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