Antenna Polarisation: Antenna Polarisiyasi Niki n'impamvu ari ngombwa

Igicapo 5: Kubisabwa bisaba guhagarikwa guhagaritse, antenne ya dipole irashobora gushirwaho bikurikije aho antene ifata

Vertical polarisation isanzwe ikoreshwa kumaradiyo yimukanwa ya terefone igendanwa, nkayakoreshejwe nabasubije bwa mbere, kubera ko ibishushanyo mbonera bya radiyo antenne ya radiyo ihagaritse kandi itanga uburyo bwo gukwirakwiza imirasire. Kubwibyo, antene ntizigomba guhindurwa nubwo icyerekezo cya radio na antene gihinduka.

3 - 30 MHz yumurongo mwinshi (HF) antenne yubusanzwe yubatswe nkinsinga ndende yoroshye ihujwe hamwe itambitse hagati yinyuguti. Uburebure bwabwo bugenwa nuburebure bwumuraba (10 - 100 m). Ubu bwoko bwa antene busanzwe butambitse.

Birakwiye ko tumenya ko kuvuga iri tsinda nka "frequency frequency" byatangiye mu myaka mirongo ishize, ubwo 30 MHz yari inshuro nyinshi. Nubwo ubu ibisobanuro bisa nkaho bitajyanye n'igihe, ni izina ryemewe n’umuryango mpuzamahanga w’itumanaho kandi riracyakoreshwa henshi.

Ibyifuzo bya polarisiyasi bishobora kugenwa muburyo bubiri: haba gukoresha imiraba yubutaka kugirango bigaragaze ibimenyetso bigufi byifashishwa mu gutangaza amakuru ukoresheje umurongo wa 300 kHz - 3 MHz wo hagati (MW), cyangwa gukoresha umuyaga wo mu kirere intera ndende unyuze kuri ionosire. Muri rusange, antenne ihagaritse ifite antenne ikwirakwiza neza kubutaka, mugihe antenne itambitse itambitse ifite imikorere myiza yikirere.

Uruziga ruzenguruka rukoreshwa cyane kuri satelite kubera ko icyerekezo cya satelite ugereranije na sitasiyo zubutaka hamwe nizindi satelite bihora bihinduka. Gukora neza hagati yo kwanduza no kwakira antene ni byiza cyane mugihe byombi bizengurutse uruziga, ariko antenne iringaniye irashobora gukoreshwa hamwe na antenne ya CP, nubwo hariho ikintu cyo gutakaza polarisiyasi.

Polarisation nayo ni ngombwa kuri sisitemu ya 5G. Hafi ya 5G byinshi-byinjira / byinshi-bisohoka (MIMO) antenna ya array igera kubintu byiyongereye byinjira mugukoresha polarisiyasi kugirango ikoreshe neza spekiteri iboneka. Ibi bigerwaho hifashishijwe guhuza ibimenyetso bitandukanye polarisiyasi hamwe no kugwiza umwanya wa antene (itandukaniro ryumwanya).

Sisitemu irashobora kohereza amakuru abiri kuberako amakuru yamakuru ahujwe na antenne yigenga ya orthogonally polarized kandi irashobora kugarurwa mubwigenge. Nubwo hari cross-polarisiyasi ibaho kubera inzira no kugoreka inzira, kugaragariza, kugwiza, no kudatungana, uwakiriye akoresha algorithms zihanitse kugirango agarure buri kimenyetso cyumwimerere, bikavamo igipimo gito cyo kwibeshya (BER) hanyuma amaherezo akoreshwa neza.

mu gusoza
Polarisiyasi ni umutungo wa antenne wingenzi ukunze kwirengagizwa. Umurongo umwe (harimo utambitse kandi uhagaritse) polarisiyasi, polarisiyasi ya oblique, uruziga ruzengurutse hamwe na elliptique polarisiyasi ikoreshwa mubikorwa bitandukanye. Urutonde rwimikorere ya end-end ya RF antenne ishobora kugeraho biterwa nicyerekezo cyayo no guhuza. Antenne isanzwe ifite polarisiyasi zitandukanye kandi irakwiriye kubice bitandukanye bya spekiteri, itanga polarisiyoneri ikenewe kubisabwa.