{"id":31582,"date":"2019-10-31T21:41:58","date_gmt":"2019-10-31T18:41:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/na-kakoj-diapazon-eta-antenna-izmeryaem-harakteristiki-antenn\/"},"modified":"2019-10-31T21:41:58","modified_gmt":"2019-10-31T18:41:58","slug":"na-kakoj-diapazon-eta-antenna-izmeryaem-harakteristiki-antenn","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/na-kakoj-diapazon-eta-antenna-izmeryaem-harakteristiki-antenn","title":{"rendered":"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/382292eed2e7f08be017343c01eb5c2f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<b>\u2014 Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn?<br \/>\n\u2014 Nuk e di, kontrolloje.<br \/>\n\u2014 \u00c7FAR\u00cb?!?!<br \/>\n<\/b><br \/>\nSi ta p\u00ebrcaktoj se \u00e7far\u00eb antene kam n\u00eb duar, n\u00ebse ajo nuk ka ndonj\u00eb shenj\u00eb? Si t\u00eb kuptoj cila anten\u00eb \u00ebsht\u00eb m\u00eb e mira ose m\u00eb e keqe? Ky problem m\u00eb ka shqet\u00ebsuar p\u00ebr nj\u00eb koh\u00eb t\u00eb gjat\u00eb.<br \/>\nN\u00eb k\u00ebt\u00eb artikull, me fjal\u00eb t\u00eb thjeshta, p\u00ebrshkruhet metoda e matjes s\u00eb karakteristikave t\u00eb antenave dhe m\u00ebnyra e p\u00ebrcaktimit t\u00eb frekuenc\u00ebs s\u00eb saj.<\/p>\n<p>P\u00ebr inxhinier\u00ebt radio \u00ebsht\u00eb e mundur q\u00eb kjo informacion t\u00eb duket e zakonshme, nd\u00ebrsa metoda e matjes \u2014 e pamjaftueshme e sakt\u00eb. Artikulli \u00ebsht\u00eb p\u00ebr ata q\u00eb nuk kuptojn\u00eb asgj\u00eb n\u00eb elektroshkenc\u00eb, si un\u00eb. <\/p>\n<p><b>TL;DR<\/b> Ne do t\u00eb masim KSV-n\u00eb e antenave n\u00eb frekuenca t\u00eb ndryshme duke p\u00ebrdorur pajisjen OSA 103 Mini dhe nj\u00eb ndar\u00ebs t\u00eb orientuar, dhe do t\u00eb nd\u00ebrtojm\u00eb nj\u00eb grafik t\u00eb varshm\u00ebris\u00eb s\u00eb KSV-s\u00eb ndaj frekuenc\u00ebs. <br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2>Teoria<\/h2>\n<p>\nKur transmetuesi d\u00ebrgon sinjal n\u00eb anten\u00eb, nj\u00eb pjes\u00eb e energjis\u00eb d\u00ebrgohet n\u00eb aj\u00ebr, nd\u00ebrsa nj\u00eb pjes\u00eb tjet\u00ebr reflektohet dhe kthehet mbrapsht. Raporti midis energjis\u00eb s\u00eb d\u00ebrguar dhe t\u00eb reflektuar karakterizohet nga koeficienti i val\u00ebve stacionare (KVS ose SWR). Sa m\u00eb i vog\u00ebl t\u00eb jet\u00eb KVS, aq m\u00eb shum\u00eb energji e transmetuesit d\u00ebrgohet si val\u00eb radio. Me KVS = 1 nuk ka reflektim (e gjith\u00eb energjia d\u00ebrgohet). KVS tek antenat reale gjithmon\u00eb \u00ebsht\u00eb m\u00eb i madh se 1.<\/p>\n<p>N\u00ebse d\u00ebrgohet nj\u00eb sinjal me frekuenca t\u00eb ndryshme n\u00eb anten\u00eb dhe n\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb matet KVS, mund t\u00eb gjejm\u00eb se n\u00eb cil\u00ebn frekuenc\u00eb reflektimi do t\u00eb jet\u00eb minimal. Ky do t\u00eb jet\u00eb \u0434\u0438\u0430\u043f\u0430\u0437oni operacional i anten\u00ebs. Gjithashtu, mund t\u00eb krahasohen antena t\u00eb ndryshme p\u00ebr nj\u00eb gam\u00eb t\u00eb nj\u00ebjt\u00eb dhe t\u00eb gjejm\u00eb se cila \u00ebsht\u00eb m\u00eb e mira.<\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/570bcfba65af1250c8245446ee38d846.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nNj\u00eb pjes\u00eb e sinjalit t\u00eb transmetuesit reflektohet nga antena.<\/p>\n<p>Antena e projektuar p\u00ebr nj\u00eb frekuenc\u00eb t\u00eb caktuar, n\u00eb teori, duhet t\u00eb ket\u00eb KVS t\u00eb ul\u00ebt n\u00eb frekuencat e saj operacionale. K\u00ebshtu, mjafton t\u00eb d\u00ebrgohet n\u00eb anten\u00eb me frekuenca t\u00eb ndryshme dhe t\u00eb gjejm\u00eb se n\u00eb cil\u00ebn frekuenc\u00eb reflektimi \u00ebsht\u00eb m\u00eb i ul\u00ebt, dometh\u00ebn\u00eb, sasia maksimale e energjis\u00eb d\u00ebrgohet si val\u00eb radio.<\/p>\n<p>Duke mund\u00ebsin\u00eb p\u00ebr t\u00eb gjeneruar sinjal n\u00eb frekuenca t\u00eb ndryshme dhe p\u00ebr t\u00eb matur reflektimin, ne do t\u00eb jemi n\u00eb gjendje t\u00eb p\u00ebrgatisim nj\u00eb grafik ku aksisi X do t\u00eb jet\u00eb frekuenca dhe aksisi Y do t\u00eb jet\u00eb koeficienti i reflektimit t\u00eb sinjalit. Si rezultat, aty ku do t\u00eb ket\u00eb nj\u00eb r\u00ebnie n\u00eb grafik (duke qen\u00eb reflektimi m\u00eb i ul\u00ebt i sinjalit), do t\u00eb jet\u00eb gam\u00eb funksionale e anten\u00ebs. <\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/6b76c3667d764ffa98ee25463cba8878.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nGrafiku imagjinar i var\u00ebsis\u00eb s\u00eb reflektimit nga frekuenca. N\u00eb t\u00eb gjith\u00eb gam\u00ebn, reflektimi \u00ebsht\u00eb 100%, p\u00ebrve\u00e7 frekuenc\u00ebs funksionale t\u00eb anten\u00ebs.<\/p>\n<p><\/p>\n<h3>Pajisja Osa103 Mini<\/h3>\n<p>\nP\u00ebr matjet do t\u00eb p\u00ebrdorim <noindex><a rel=\"nofollow\" href=\"http:\/\/www.osa103.ru\/\">OSA103 Mini<\/a><\/noindex>. Ky \u00ebsht\u00eb nj\u00eb mat\u00ebs universale q\u00eb bashkon osciloskopin, gjeneratorin e sinjalit, analizatorin e spektrit, mat\u00ebsin e A\u00c7H\/F\u00c7H, analizatorin vektorial t\u00eb antenave, mat\u00ebsin LC, dhe madje edhe SDR-transceiver. Gama funksionale e OSA103 Mini \u00ebsht\u00eb e kufizuar n\u00eb 100 MHz, moduli OSA-6G zgjeron gam\u00ebn e frekuenc\u00ebs n\u00eb modin e A\u00c7H deri n\u00eb 6 GHz. Programi i origjin\u00ebs me t\u00eb gjitha funksionet peshon 3 MB, punon n\u00ebn Windows dhe p\u00ebrmes wine n\u00eb Linux.<\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/2a959223b0f99593a8ba609429019cad.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n Osa103 Mini \u2014 pajisje universale p\u00ebr amator\u00ebt e radios dhe inxhinier\u00ebt<\/p>\n<h3>Drejtori i ndarjes<\/h3>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/7ddcda098311bb0944b957204e09e91f.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Kopsha e drejtuar (directional coupler) \u00ebsht\u00eb nj\u00eb pajisje q\u00eb ndan nj\u00eb pjes\u00eb t\u00eb vog\u00ebl t\u00eb sinjalit t\u00eb lart\u00eb frekuence, q\u00eb po l\u00ebviz n\u00eb nj\u00eb drejtim t\u00eb caktuar. N\u00eb rastin ton\u00eb, ajo duhet t\u00eb ndaj\u00eb nj\u00eb pjes\u00eb t\u00eb sinjalit t\u00eb reflektuar (duke ardhur nga antena prapa n\u00eb gjenerator) p\u00ebr ta matur at\u00eb. <br \/>\nShpjegimi vizual i pun\u00ebs s\u00eb kopsh\u00ebs s\u00eb drejtuar: <noindex><a rel=\"nofollow\" href=\"https:\/\/www.youtube.com\/watch?v=iBK9ZIx9YaY\">youtube.com\/watch?v=iBK9ZIx9YaY<\/a><\/noindex><\/p>\n<p>Karakteristikat kryesore t\u00eb kopsh\u00ebs s\u00eb drejtuar:<\/p>\n<ul>\n<li><b>Frekvenzat e pun\u00ebs<\/b> \u2014 gama e frekuencave mbi t\u00eb cilat treguesit kryesor\u00eb nuk dalin jasht\u00eb norm\u00ebs. Kopsha ime \u00ebsht\u00eb e dizajnuar p\u00ebr frekuenca nga 1 deri n\u00eb 1000 MHz <\/li>\n<li><b>Shk\u00ebputja (Coupling)<\/b> \u2014 \u00e7far\u00eb pjese e sinjalit (n\u00eb decibel) do t\u00eb ndahet kur valvoja t\u00eb l\u00ebviz\u00eb nga IN n\u00eb OUT<\/li>\n<li><b>Direktiviteti (Directivity)<\/b> \u2014 sa m\u00eb pak sinjal do t\u00eb ndahet kur sinjali t\u00eb l\u00ebviz\u00eb n\u00eb drejtimin e kund\u00ebrt nga OUT n\u00eb IN<\/li>\n<\/ul>\n<p>N\u00eb pamje t\u00eb par\u00eb, kjo duket mjaft komplekse. P\u00ebr qart\u00ebsi, le t\u00eb paraqesim nj\u00eb ndar\u00ebs si nj\u00eb tub uj\u00eb me nj\u00eb devijim t\u00eb vog\u00ebl brenda. Devijimi \u00ebsht\u00eb b\u00ebr\u00eb n\u00eb nj\u00eb m\u00ebnyr\u00eb q\u00eb, kur uji l\u00ebviz n\u00eb drejtim t\u00eb drejtp\u00ebrdrejt\u00eb (nga IN n\u00eb OUT), nj\u00eb pjes\u00eb e konsiderueshme e ujit devijohet. Sasia e ujit q\u00eb devijohet n\u00eb k\u00ebt\u00eb drejtim p\u00ebrcaktohet nga parametri Coupling n\u00eb flet\u00eb t\u00eb dh\u00ebnash t\u00eb ndar\u00ebsit.<\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/96e6f67afd733afca5ec69b6bd566af3.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nKur uji l\u00ebviz n\u00eb drejtim t\u00eb kund\u00ebrt, devijohet shum\u00eb m\u00eb pak uj\u00eb. Kjo duhet t\u00eb perceptohet si nj\u00eb fenomen an\u00ebsor. Sasia e ujit q\u00eb devijohet n\u00eb k\u00ebt\u00eb drejtim p\u00ebrcaktohet nga parametri Directivity n\u00eb flet\u00eb t\u00eb dh\u00ebnash. Sa m\u00eb i vog\u00ebl ky parameter (nj\u00eb vler\u00eb m\u00eb e madhe dB), aq m\u00eb mir\u00eb p\u00ebr q\u00ebllimin ton\u00eb. <\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/40ab73a0be05c89af4408c5af096bec9.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3>Schema themelore<\/h3>\n<p>\nDuke qen\u00eb se duam t\u00eb masim nivelin e sinjalit t\u00eb reflektuar nga antena, e lidhim at\u00eb n\u00eb IN t\u00eb ndar\u00ebsit, dhe gjeneratorin n\u00eb OUT. K\u00ebshtu, nj\u00eb pjes\u00eb e sinjalit t\u00eb reflektuar nga antena do t\u00eb arrij\u00eb n\u00eb marr\u00ebs p\u00ebr masim. <\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/bdf04c64d65c320d65e3db4b99c99363.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nSkema e lidhjes s\u00eb ndar\u00ebsit. Sinjali i reflektuar devijohet n\u00eb marr\u00ebs.<\/p>\n<h3>P\u00ebrgatitja e matjes<\/h3>\n<p>\nDo t\u00eb p\u00ebrgatitim nj\u00eb instalim p\u00ebr matjen e KSV sipas skem\u00ebs p\u00ebrkat\u00ebse. N\u00eb daljen e gjeneratorit do t\u00eb instalojm\u00eb gjithashtu nj\u00eb attenuator me nj\u00eb zbutje prej 15 dB. Kjo do t\u00eb p\u00ebrmir\u00ebsoj\u00eb p\u00ebrshtatjen e deg\u00ebs me daljen e gjeneratorit dhe do t\u00eb rris\u00eb sakt\u00ebsin\u00eb e matjes. Attenuatori mund t\u00eb merret me zbutje nga 5 deri n\u00eb 15 dB. Sasia e zbutjes do t\u00eb merret automatikisht parasysh gjat\u00eb kalibrimit t\u00eb m\u00ebvonsh\u00ebm.<\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/7a882805d26fdee67107f38f0864850c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nAttenuatori dob\u00ebson sinjalin me nj\u00eb num\u00ebr t\u00eb fiksuar decibel\u00ebsh. Karakteristika kryesore e attenuatorit \u00ebsht\u00eb koeficienti i dob\u00ebsimit (attenuacionit) t\u00eb sinjalit dhe gama e frekuencave t\u00eb pun\u00ebs. N\u00eb frekuenca jasht\u00eb gam\u00ebs s\u00eb pun\u00ebs, karakteristikat e attenuatorit mund t\u00eb ndryshojn\u00eb n\u00eb m\u00ebnyr\u00eb t\u00eb paparashikueshme.<\/p>\n<p>Kjo \u00ebsht\u00eb instalimi p\u00ebrfundimtar. Gjithashtu nuk duhet harruar t\u00eb d\u00ebrgohet sinjali i frekuenc\u00ebs mesatare (PCH) nga moduli OSA-6G n\u00eb pllak\u00ebn kryesore t\u00eb pajisjes. P\u00ebr k\u00ebt\u00eb, lidhim portin IF OUTPUT n\u00eb pllak\u00ebn kryesore me INPUT n\u00eb modul OSA-6G.<\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/d1045f27ece8d915bbc0d5afaaa94da3.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>P\u00ebr t\u00eb ulur nivelin e nd\u00ebrhyrjeve nga burimi i impulsit t\u00eb energjis\u00eb s\u00eb laptopit, t\u00eb gjitha matjet i kryej duke e p\u00ebrdorur laptopin me bateri. <br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/053c4405f0f06559d97ce171a2335447.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>Kalibrimi<\/h2>\n<p>\nPara fillimin e matjeve, \u00ebsht\u00eb e r\u00ebnd\u00ebsishme t\u00eb sigurohemi p\u00ebr funksionalitetin e t\u00eb gjith\u00eb nj\u00ebsive t\u00eb pajisjes dhe cil\u00ebsis\u00eb s\u00eb kabllove. P\u00ebr k\u00ebt\u00eb arsye, lidhim gjeneratorin dhe marr\u00ebsin me nj\u00eb kabllo direkt, aktivizojm\u00eb gjeneratorin dhe realizojm\u00eb matjen e A\u00c7H. Marrim nj\u00eb grafik pothuajse t\u00eb pavendosur n\u00eb 0dB. Kjo do t\u00eb thot\u00eb se n\u00eb t\u00eb gjith\u00eb gam\u00ebn e frekuencave, gjith\u00eb fuqia e emetuar nga gjeneratori ka arritur deri te marr\u00ebsi. <\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/8e5bc1632e289e083ef3abd3a9ab9cc4.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nLidhja e gjeneratorit direkt me marr\u00ebsin<\/p>\n<p>T\u00eb shtojm\u00eb n\u00eb skem\u00eb nj\u00eb attenuator. \u00cbsht\u00eb e dukshme nj\u00eb dob\u00ebsim pothuajse konstant t\u00eb sinjalit prej 15dB n\u00eb t\u00eb gjith\u00eb gam\u00ebn. <br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/490a7cb5a17313e73fb9c612d667e8f3.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nLidhja e gjeneratorit p\u00ebrmes attenuatorit me 15dB me marr\u00ebsin<\/p>\n<p>Do t\u00eb lidhim gjeneratorin me portin OUT t\u00eb ndar\u00ebsit, dhe marr\u00ebsin me CPL t\u00eb ndar\u00ebsit. Duke qen\u00eb se nuk ka ngarkes\u00eb t\u00eb lidhur me portin IN, gjith\u00eb sinjali i gjeneruar duhet t\u00eb reflektohet dhe nj\u00eb pjes\u00eb t\u00eb ndahen p\u00ebr te marr\u00ebsi. Sipas flet\u00ebs s\u00eb t\u00eb dh\u00ebnave p\u00ebr ndar\u00ebsin ton\u00eb (<noindex><a rel=\"nofollow\" href=\"https:\/\/ww2.minicircuits.com\/pdfs\/ZEDC-15-2B.pdf\">ZEDC-15-2B<\/a><\/noindex>), \u043f\u0430\u0440\u0430\u043c\u0435\u0442ri Coupling \u00ebsht\u00eb ~15db, prandaj duhet t\u00eb shohim nj\u00eb linj\u00eb horizontale n\u00eb nivelin rreth -30 dB (coupling + humbja e atenuatorit). Por, duke qen\u00eb se diapazoni operacional i pako ndar\u00ebs \u00ebsht\u00eb i kufizuar n\u00eb 1 GHz, t\u00eb gjitha matjet mbi k\u00ebt\u00eb frekuenc\u00eb mund t\u00eb konsiderohen pa kuptim. Kjo \u00ebsht\u00eb qart\u00eb e dukshme n\u00eb grafik, pas 1 GHz leximet jan\u00eb kaotike dhe nuk kan\u00eb kuptim. Prandaj, t\u00eb gjitha matjet e m\u00ebtejshme do i b\u00ebjm\u00eb n\u00eb diapazonin operacional t\u00eb pako ndar\u00ebs.<\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/ac734456bcd9752786af57efc9ac06bf.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nLidhja e pako ndar\u00ebs pa ngarkes\u00eb. Duksh\u00ebm kufiri i diapazonit operacional t\u00eb pako ndar\u00ebs.<\/p>\n<p>Duke qen\u00eb se t\u00eb dh\u00ebnat e matjeve mbi 1 GHz, n\u00eb rastin ton\u00eb, nuk kan\u00eb kuptim, do ta kufizojm\u00eb frekuenc\u00ebn maksimale t\u00eb gjeneratorit n\u00eb vlerat operative t\u00eb pako ndar\u00ebs. N\u00eb matje marrim nj\u00eb linj\u00eb t\u00eb drejt\u00eb.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/360c60083a6bd8ef2b46a8d24edb34e5.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nKufizimi i diapazonit t\u00eb gjeneratorit n\u00eb diapazonin operacional t\u00eb pako ndar\u00ebs<\/p>\n<p>P\u00ebr t\u00eb matur n\u00eb m\u00ebnyr\u00eb t\u00eb qart\u00eb KSV-n\u00eb e antenave, na nevojitet t\u00eb kryejm\u00eb kalibrimin p\u00ebr t\u00eb pranuar parametrat aktual\u00eb t\u00eb skem\u00ebs (100% reflektim) si pik\u00eb referimi, pra zero dB. P\u00ebr k\u00ebt\u00eb, programi OSA103 Mini ka nj\u00eb funksion t\u00eb integruar kalibrimi. Kalibrimi kryhet pa anten\u00ebn (ngarkes\u00ebn) t\u00eb lidhur, t\u00eb dh\u00ebnat e kalibrimit ruhen n\u00eb nj\u00eb skedar dhe m\u00eb pas merren automatikisht parasysh gjat\u00eb nd\u00ebrtimit t\u00eb grafik\u00ebve.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/6069e45a30f0a5a14f0ff0ab113bbb12.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nFunksioni i kalibrimit t\u00eb IA\u00c7H n\u00eb programin OSA103 Mini<\/p>\n<p>Duke aplikuar rezultatet e kalibrimit dhe duke nisur matjet pa ngarkes\u00eb, ne marrim nj\u00eb grafik t\u00eb rregullt n\u00eb 0dB. <br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/b916728c3dc3c644b437add9fa31736a.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nGrafiku pas p\u00ebrfundimit t\u00eb kalibrimit<\/p>\n<h3>Matur antanat<\/h3>\n<p>\nTani mund t\u00eb fillojm\u00eb t\u00eb masim antenat. Fal\u00eb kalibrimit, do t\u00eb shohim dhe masim uljen e reflektimit pas lidhjes s\u00eb anten\u00ebs. <\/p>\n<h2>Antena nga Aliexpress n\u00eb 433MHz<\/h2>\n<p>\nAntena me sh\u00ebnimin 443MHz. Duke par\u00eb, \u00ebsht\u00eb e qart\u00eb se antena funksionon m\u00eb efektivisht n\u00eb gam\u00ebn 446MHz, n\u00eb k\u00ebt\u00eb frekuenc\u00eb KSV \u00ebsht\u00eb 1.16. N\u00eb k\u00ebt\u00eb rast, n\u00eb frekuenc\u00ebn e deklaruar, treguesit jan\u00eb duksh\u00ebm m\u00eb t\u00eb k\u00ebqij, n\u00eb 433MHz KSV \u00ebsht\u00eb 4.2.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/7b9ba1ad3069235fb10fb92112f52097.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Antena e panjohur 1<\/h2>\n<p>\nAntena pa mark\u00eb. Sipas grafik\u00ebs, ajo \u00ebsht\u00eb e dizajnuar p\u00ebr 800 MHz, supozohet p\u00ebr band\u00ebn GSM. P\u00ebr drejt\u00ebsi duhet t\u00eb themi se kjo anten\u00eb funksionon gjithashtu n\u00eb 1800 MHz, por p\u00ebr shkak t\u00eb kufizimeve t\u00eb ndar\u00ebsit, nuk mund t\u00eb b\u00ebj matje t\u00eb sakta n\u00eb k\u00ebto frekuenca.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/69c4c7d6084a0b835d141912f3465999.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Antena e panjohur 2<\/h2>\n<p>\nNj\u00eb tjet\u00ebr anten\u00eb q\u00eb ka qen\u00eb prej koh\u00ebsh n\u00eb kuti. Duket se \u00ebsht\u00eb gjithashtu p\u00ebr band\u00ebn GSM, por m\u00eb e mir\u00eb se e m\u00ebparshmja. N\u00eb frekuenc\u00ebn 764 MHz, SWR \u00ebsht\u00eb af\u00ebr nj\u00ebsi, n\u00eb 900 MHz SWR \u00ebsht\u00eb 1.4.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/d6c9c55c62865cf348001d2f26b0cd7b.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Antena e panjohur 3<\/h2>\n<p>\nKjo duket si nj\u00eb anten\u00eb Wi-Fi, por konektori p\u00ebr ndonj\u00eb arsye \u00ebsht\u00eb SMA-Male dhe jo RP-SMA, si\u00e7 \u00ebsht\u00eb p\u00ebr t\u00eb gjitha antenat Wi-Fi. Sipas matjeve, n\u00eb frekuencat deri n\u00eb 1 MHz, kjo anten\u00eb \u00ebsht\u00eb e pavler\u00eb. P\u00ebrs\u00ebri, p\u00ebr shkak t\u00eb kufizimeve t\u00eb ndar\u00ebsit, ne nuk do ta dim\u00eb se cila \u00ebsht\u00eb kjo anten\u00eb.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/554d1bb265a202f8129882cff1d45c88.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Antena teleskopike<\/h2>\n<p>\nLe t\u00eb p\u00ebrpiqemi t\u00eb llogarisim se sa duhet t\u00eb zgjatet antena teleskopike p\u00ebr band\u00ebn 433MHz. Formula p\u00ebr llogaritjen e gjat\u00eb\u00ebsis\u00eb s\u00eb val\u00ebs: \u03bb = C\/f, ku C \u00ebsht\u00eb shpejt\u00ebsia e drit\u00ebs, f \u00ebsht\u00eb frekuenca.<\/p>\n<pre><code class=\"plaintext\">299.792.458 \/ 443.000.000 = 0.69719176279\n<\/code><\/pre>\n<p>\n<b>Gjat\u00ebsia totale e val\u00ebs<\/b> \u2014 69.24 cm<br \/>\n<b>Gjat\u00ebsia gjysm\u00eb e val\u00ebs<\/b> \u2014 34.62 cm<br \/>\n<b>Gjat\u00ebsia nj\u00eb t\u00eb kat\u00ebrt\u00ebs s\u00eb val\u00ebs<\/b> \u2014 17.31 cm<\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/928234231cbc70c38eda904650cb191f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nAntena e llogaritur k\u00ebshtu rezultoi t\u00eb jet\u00eb krejt\u00ebsisht e pavler\u00eb. N\u00eb frekuenc\u00ebn 433MHz, vlera e SWR \u00ebsht\u00eb 11. <br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/828b8bc7eacb444902373ade0690e769.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nDuke eksperimentuar me t\u00ebrheqjen e anten\u00ebs, arrita t\u00eb arrij nj\u00eb minim KSV prej 2.8 me nj\u00eb gjat\u00ebsi antene prej rreth 50 cm. Kjo tregoi se trash\u00ebsia e seksioneve ka r\u00ebnd\u00ebsi t\u00eb madhe. K\u00ebshtu, duke t\u00ebrhequr vet\u00ebm seksionet e holl\u00eb t\u00eb skajshme, rezultati ishte m\u00eb i mir\u00eb se sa kur t\u00ebrhiqeshin vet\u00ebm seksionet e trasha n\u00eb t\u00eb nj\u00ebjt\u00ebn gjat\u00ebsi. Nuk e di sa vlen m\u00eb tej t\u00eb mb\u00ebshtetem n\u00eb k\u00ebto llogaritje me gjat\u00ebsi antene teleskopike, sepse n\u00eb praktik\u00eb ato nuk funksionojn\u00eb. Mund t\u00eb funksionojn\u00eb ndryshe me antena ose frekuenca t\u00eb tjera, nuk e di.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/834043959699179660d30b5653ba7ecd.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>Nj\u00eb cop\u00eb tel n\u00eb 433MHz<\/h2>\n<p>\nShpesh n\u00eb pajisje t\u00eb ndryshme, si\u00e7 jan\u00eb \u00e7elsat radio, mund t\u00eb shihni nj\u00eb cop\u00eb tel t\u00eb drejt\u00eb si anten\u00eb. Prek nj\u00eb cop\u00eb tel, e barabart\u00eb me nj\u00eb t\u00eb kat\u00ebrt\u00ebn e gjat\u00ebsi s\u00eb val\u00ebs n\u00eb 433 MHz (17.3 cm), dhe e kam lyer skajin n\u00eb m\u00ebnyr\u00eb q\u00eb t\u00eb futet ngusht\u00eb n\u00eb mb\u00ebshtjelljen SMA Female. <\/p>\n<p><img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/32bc231d1a8cf9d54db19d3baace112c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nRezultati doli t\u00eb ishte i \u00e7uditsh\u00ebm: ky tel funksionon mjaft mir\u00eb n\u00eb 360 MHz, por \u00ebsht\u00eb i panevojsh\u00ebm n\u00eb 433 MHz.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/e28f05ef88e4306ebb4a8a77e7ae844c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nFillova por\u00eb i fillova t\u00eb shkurtoja me cop\u00ebza dhe t\u00eb shihja t\u00eb dh\u00ebnat. R\u00ebnia n\u00eb grafik filloi t\u00eb l\u00ebviz\u00eb ngadal\u00eb n\u00eb drejtimin e djatht\u00eb, n\u00eb 433 MHz. N\u00eb fund, n\u00eb gjat\u00ebsi t\u00eb kabllit rreth 15.5 cm, arrita t\u00eb merrja vler\u00ebn m\u00eb t\u00eb ul\u00ebt t\u00eb SWR 1.8 n\u00eb frekuenc\u00ebn 438 MHz. Shkurtime t\u00eb m\u00ebtejshme t\u00eb kabllit \u00e7uan n\u00eb rritje t\u00eb SWR.<br \/>\n<img decoding=\"async\" alt=\"Cila \u00ebsht\u00eb kjo frekuenc\u00eb p\u00ebr anten\u00ebn? Po masim karakteristikat e antenave\" src=\"\/wp-content\/uploads\/2019\/04\/42496a059f333808e836b5a62c281a7b.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>P\u00ebrfundimi<\/h2>\n<p>\nP\u00ebr shkak t\u00eb kufizimeve t\u00eb ndar\u00ebsit, nuk arrita t\u00eb mierem me antenat n\u00eb frekuenca mbi 1 GHz, si antenat Wi-Fi. Kjo do t\u00eb ishte e mundur n\u00ebse do t\u00eb kisha nj\u00eb ndar\u00ebs m\u00eb t\u00eb gjer\u00eb.<\/p>\n<p>Ndar\u00ebsi, kabllot e lidh\u00ebse, pajisja dhe madje edhe laptopi \u2013 k\u00ebto jan\u00eb pjes\u00eb t\u00eb sistemit t\u00eb anten\u00ebs q\u00eb po formohet. Gjeometria e tyre, pozita n\u00eb hap\u00ebsir\u00eb dhe objektet p\u00ebrreth ndikojn\u00eb n\u00eb rezultatet e matjes. Pas vendosjes n\u00eb nj\u00eb stacion radio ose modem real, frekuenca mund t\u00eb ndryshoj\u00eb, pasi trupi i stacionit radio, modem\u00ebs, dhe operatorit do t\u00eb b\u00ebhen pjes\u00eb e anten\u00ebs.<\/p>\n<p>OSA103 Mini \u00ebsht\u00eb nj\u00eb pajisje shum\u00eb e shk\u00eblqyer multifunksionale. Falenderoj projektuesin e saj p\u00ebr konsultimin gjat\u00eb matjeve.<br \/>\n<br \/>Burimi: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/447092\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u2014 \u041d\u0430 \u043a\u0430\u043a\u043e\u0439 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u044d\u0442\u0430 \u0430\u043d\u0442\u0435\u043d\u043d\u0430? \u2014 \u041d\u0435 \u0437\u043d\u0430\u044e, \u043f\u0440\u043e\u0432\u0435\u0440\u044c. \u2014 \u041a\u0410\u0410\u0410\u041a?!?! \u041a\u0430\u043a \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c, \u0447\u0442\u043e \u0437\u0430 \u0430\u043d\u0442\u0435\u043d\u043d\u0430 \u0443 \u0432\u0430\u0441 \u0432 \u0440\u0443\u043a\u0430\u0445, \u0435\u0441\u043b\u0438 \u043d\u0430 \u043d\u0435\u0439 \u043d\u0435\u0442 \u043c\u0430\u0440\u043a\u0438\u0440\u043e\u0432\u043a\u0438? \u041a\u0430\u043a \u043f\u043e\u043d\u044f\u0442\u044c, \u043a\u0430\u043a\u0430\u044f \u0430\u043d\u0442\u0435\u043d\u043d\u0430 \u043b\u0443\u0447\u0448\u0435 \u0438\u043b\u0438 \u0445\u0443\u0436\u0435? \u042d\u0442\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043c\u0435\u043d\u044f \u043c\u0443\u0447\u0438\u043b\u0430 \u0434\u0430\u0432\u043d\u043e. \u0412 \u0441\u0442\u0430\u0442\u044c\u0435 \u043f\u0440\u043e\u0441\u0442\u044b\u043c \u044f\u0437\u044b\u043a\u043e\u043c \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043c\u0435\u0442\u043e\u0434\u0438\u043a\u0430 \u0438\u0437\u043c\u0435\u0440\u0435\u043d\u0438\u044f \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a \u0430\u043d\u0442\u0435\u043d\u043d, \u0438 \u0441\u043f\u043e\u0441\u043e\u0431 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0447\u0430\u0441\u0442\u043e\u0442\u043d\u043e\u0433\u043e \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u0430 \u0430\u043d\u0442\u0435\u043d\u043d\u044b. \u041e\u043f\u044b\u0442\u043d\u044b\u043c \u0440\u0430\u0434\u0438\u043e\u0438\u043d\u0436\u0435\u043d\u0435\u0440\u0430\u043c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":23504,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-31582","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u2014 \u041d\u0430 \u043a\u0430\u043a\u043e\u0439 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u044d\u0442\u0430 \u0430\u043d\u0442\u0435\u043d\u043d\u0430? 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