Antene ya isotropic ni isoko nziza cyane itanga ingufu za electromagnetic ku buryo bungana mu mpande zose. Abahanga bayikoresha mu kugereranya inyungu za antene, ubuyobozi n'imbaraga za radiation, nubwo antene ya isotropic idashobora kubakwa mu buryo bufatika.
Iyi mfashanyigisho isobanura icyo imirasire ya isotropic isobanura, imiterere y'imiterere y'imirasire ya isotropic, impamvu inyungu y'ikigereranyo ari 0 dBi, n'uburyo iyo reference ikoreshwa mu kubara EIRP.
Antena ya Isotropic ni iki?
Antene ya isotropic, yitwa kandi radiator ya isotropic, ni isoko y’ingingo z’ibitekerezo ifite ubukana bumwe bw’imirasire kuri buri nguni ya azimuth na elegitoroniki. Nta cyerekezo ikunda, bityo ikaba itanga umurongo ngenderwaho udafite aho ubogamiye wo gusobanura imiterere y’icyerekezo cya antene nyazo.
- Ni imfashanyigisho nziza y'imibare, ntabwo ari antene ifatika ishobora kugerwaho.
- Ubukana bw'imirasire yayo ntibuhinduka ku nguni yuzuye ikikije isoko.
- Icyerekezo cyayo ni 1, ari byo 0 dBi.
- Inyungu y'antene ifatika ivugwa muri dBi ipimwa ugereranije n'iyi referensi.
Imirasire ya Isotropic isa ite?
Imiterere myiza y'imirasire ya isotropic ifite imiterere itatu ni uruziga ruherereye ku isoko. Ingingo yose iri kuri urwo ruziga igaragaza ubukana bw'imirasire imwe ku ntera imwe. Uduce twose tw'imirongo ibiri tunyura hagati dukora igishushanyo mbonera cy'uruziga.
Iyi miterere y’uruziga ituma radiateri ya isotropic igira akamaro muri teyori ya antene: itanga urwego rw’imirasire mpuzandengo aho icyerekezo cy’antene nyayo gishobora kugereranywa. Antene ikora buri gihe ifite imiterere ifatika, imiterere y’ibiryo n’ibidukikije biyikikije bitanga ihindagurika ry’icyerekezo, bityo imiterere yayo yapimwe ishobora kuba irimo utudomo tw’ingenzi, utudomo tw’uruhande n’utudomo.
Icyitegererezo cy'ifatizo:Mu ngero eshatu, imirasire ya isotropic ni uruziga. Imirasire y'icyerekezo kimwe ikwirakwira gusa mu gice cyatoranijwe.
Itandukaniro ry'ingenzi:imiterere ya isotropic y’umuzenguruko ntabwo ari kimwe n’imiterere y’ibumba ikunze kugaragara kuri dipole n’izindi antene zerekeza impande zose.
Ishusho iriho haruguru igaragaza imiterere isanzwe isa n'iy'icyerekezo kimwe, isa na dipole: hafi ya azimuth isa, donut isa n'iy'ibice bitatu n'iy'umunani isa n'iy'icyitegererezo mu gice gihagaze. Ni ingirakamaro mu kugereranya, ariko si imiterere y'uruziga rwa radiator isotropic.
Antena ya Isotropic ugereranyije n'iya Omnidirectional
Amagambo akoreshwa mu buryo bwa isotropic na omnidirectional rimwe na rimwe akoreshwa mu buryo busanzwe, ariko asobanura imiterere itandukanye y'imirasire.
- Antene ya Isotropic:Irabagirana ku buryo bungana mu mpande zose mu ngero eshatu. Ni inyito y’imitekerereze ifite imiterere y’uruziga.
- Antene y'icyerekezo kimwe:Irabagirana hafi ku rugero rumwe hafi y’umurongo umwe w’icyitegererezo, akenshi ikaba ari urwego rw’azimuth rutambitse, mu gihe imirasire yayo ihinduka bitewe n’uburebure.
- Imiterere isanzwe y'icyerekezo cyose:uruziga mu buryo butambitse kandi rufite ishusho ya munani mu buryo buhagaze, bigatuma habaho igishushanyo mbonera cy’ibice bitatu gifite ishusho nk’iy’umugati.
Antene ikoresha icyerekezo cyose ishobora gutanga ubwihisho bwa azimuth ya dogere 360, ariko ntabwo ari isotropic kuko ubusanzwe ifite imirasire idakomeye cyangwa idafite aho ihuriye n'umurongo wayo.
Kuki Antena ya Isotropic Izamuka 0 dBi?
Radiateri nziza ya isotropic ifite ubuyobozi bwa 1 kuko idashyira imbaraga mu cyerekezo icyo ari cyo cyose. Igaragazwa ku gipimo cya logarithmic, iyi referensi ni:
10 logi10(1) = 0 dBi
Incamake “i” bivuze ko agaciro kavugwa kuri radiateri ya isotropic. Antene nyayo ifite amanota 3 dBi itanga imbaraga zikubye kabiri ubucucike bw’ingufu mu cyerekezo cyayo cy’ikirenga ugereranije n’igereranya rya isotropic iyo igereranya rikoresha imbaraga zimwe zemewe. Ntibivuze ko radiateri ya isotropic ubwayo ifite inyungu ya 3 dBi.
Ku birebana n'amahame y'ibanze ajyanye nayo, rebaUbuyobozi bwa antenenaimikorere myiza n'inyungu ya antene.
Uburyo EIRP ikoresha Isotropic Reference
Ingufu zingana na isotropically radiated power, cyangwa EIRP, zigaragaza imbaraga radiator ikwiye ya isotropic yakenera kugira ngo ikore ubucucike bw'ingufu ntarengwa nk'ubwo sisitemu nyayo yo kohereza mu cyerekezo runaka. Mu bice bya logarithmic:
EIRP (dBm) = ingufu zo kohereza (dBm) + inyungu ya antene (dBi) - igihombo cya feeder (dB)
Iyi sano ihuza umusaruro wa transmitter, inyungu ya antene ugereranije na isotropic hamwe n'igihombo gituruka ku nsinga, imiyoboro cyangwa ibindi bice by'itumanaho. Bityo rero, EIRP ni umubare w'urwego rwa sisitemu, ntabwo ari imbaraga z'inyongera zitangwa na antene.
ERP vs. EIRP
EIRP ikoresha radiator isotropic nk'icyitegererezo cyayo. Ingufu zikoresha imirasire, cyangwa ERP, ikoresha dipole y'igice cy'umuraba nk'icyitegererezo cyayo. Pole nziza y'igice cy'umuraba ifite inyongera ya dBi zigera kuri 2.15 mu cyerekezo cyayo cy'imirasire ntarengwa, bityo ingano zombi zitandukanye na 2.15 dB.
ERP (dBW) = EIRP (dBW) - 2.15 dB
Urugero, sisitemu ifite EIRP ya 30 dBW ifite ERP ya 27.85 dBW. Buri gihe reba niba antene cyangwa umupaka ugenzurwa wavuzwe muri dBi/dBW EIRP cyangwa dBd/dBW ERP mbere yo kugereranya agaciro.
Kugira ngo wumve uburyo antene nyazo zikwirakwiza ingufu mu bice by'imbere n'ibidafite aho bihuriye, komeza urebe ubuyobozi bwacu kuriimiterere y'imirasire ya antene.
Ibintu by'ingenzi byafashwe
- Antene ya isotropic ni igikoresho cyiza cyo gufatiraho ingingo, ntabwo ari igishushanyo mbonera cy'antene gifatika.
- Imiterere yayo y'imirasire y'ibice bitatu ni uruziga, kandi buri gice cyo hagati cy'ibice bibiri ni uruziga.
- Igenzura ryayo n'inyungu ni 1, cyangwa 0 dBi.
- Antene ifata icyerekezo cyose irangana gusa mu gice cyatoranijwe kandi ubusanzwe ifite imiterere y'ibice bitatu isa n'umugati.
- EIRP yerekeza ku kwiyongera kwa isotropic, mu gihe ERP yerekeza kuri dipole y'igice cy'umuraba.
RF MISO itanga antene zikoresha icyerekezo n'uburyo bwagutse bwo gupima mikoroonde, itumanaho no guhuza sisitemu. Sura urubuga rwacu rwacu.ibisubizo bya antene z'icyerekezo cyose or hamagara itsinda ryacukugira ngo tuganire ku nshuro z'imikorere yawe, inyungu, uburinganire n'ibisabwa ku miterere.
Igihe cyo kohereza: 17 Mata 2026
