Yintoni i-Inverted V Antenna?
I-antenna eguqulweyo ye-V yindlela eqhelekileyo yokwahluka kwe-antenna ye-dipole ekhuliswe phakathi. Endaweni yokucwangcisa izinto ezimbini ezikhazimlayo kumgca othe tye othe tye, indawo yokuphakelwa iphakanyiswa iye kwindawo ephezulu ngelixa iingalo ezimbini ze-antenna zithambekela ezantsi emhlabeni.
Xa ujonge ecaleni, isakhiwo sifana nonobumba ojonge phantsi othi “V,” nto leyo enika i-antenna igama layo. Olu lungiselelo lunciphisa indawo yokufaka ethe tye kwaye ludla ngokufuna imasti enye exhasayo ephakathi, nto leyo eyenza ukuba ibe nomtsalane kunxibelelwano lwe-HF, ukusasazwa kwentsimi, ukujonga irediyo, kunye nokufakelwa apho indawo okanye izakhiwo zenkxaso zinqongophele khona.
Nangona ii-antenna ze-V eziguqulweyo zihlala zinxulunyaniswa nebhendi ye-HF ye-3–30 MHz, i-frequency yazo yokusebenza imiselwa bubude bombane endaweni yoluhlu olunye lwe-frequency oluzinzileyo. I-geometry efanayo esisiseko inokulinganiswa okanye iguqulwe kwezinye izicelo ze-RF.
Ulwakhiwo kunye noMgaqo-siseko wokuSebenza
I-antenna eqhelekileyo ye-V eguqulweyo inee-elements ezimbini eziqhubayo ezinobude obulinganayo, eziqhagamshelwe kwindawo yokutya elinganayo encotsheni. Indawo yokutya esembindini ifakelwe kwi-mast, inqaba, inkxaso yophahla, okanye olunye ulwakhiwo olungenakho ukukhupha umoya, ngelixa iziphelo zezinto ezimbini zithotywa kwaye ziqiniswe ngee-insulator.
I-antenna ngokubanzi yenzelwe ukuba yi-resonant dipole. Umsinga we-RF unamandla kakhulu kufutshane nendawo yokutya kwaye uyancipha kancinci kancinci ukuya kwiziphelo ezivulekileyo. Ezi zinto zimbini ziphethe imisinga yecala elichaseneyo, zivelisa amasimi e-electromagnetic adibanayo ukwenza ipateni yemitha iyonke ye-antenna.
Ngokungafaniyo ne-antenna ye-traveling-wave, i-conventional resonant inverted V dipole ixhasa usasazo lwamandla olumiyo. Ngoko ke ukusebenza kwayo kuchatshazelwa kakhulu bubude bezinto, i-feed-point impedance, i-apex angle, ububanzi be-conductor, ukuphakama kokufakwa, kunye nezinto ezingqongileyo.
I-Apex Angle kunye neJiyometri yoFakelo
I-engile ephakathi kweengalo ezimbini ze-antenna ibizwa ngokuba yi-apex angle okanye i-included angle. Uqwalaselo oluqhelekileyo olusebenzayo lusebenzisa i-engile emalunga ne-90° ukuya kwi-120°, nangona ixabiso elifanelekileyo lixhomekeke kwi-frequency ecetywayo, i-impedance, indawo ekhoyo, kunye nepatheni yemitha efunekayo.
Ukunciphisa i-apex angle kunciphisa unyawo oluthe tye, kodwa kutshintsha nokudibana phakathi kweengalo ezimbini ze-antenna. Njengoko iingalo zisondela kunye, i-feed-point impedance kunye ne-resonant frequency zinokutshintsha, kwaye i-peak gain ingancitshiswa kancinci.
Incopho ifanele ibekwe phezulu kwaye icace kwizakhiwo ezijikelezileyo eziqhubayo kangangoko kunokwenzeka. Akukho mthetho uqhelekileyo othi mayihlale ingaphantsi kwekota yobude bomphezulu. Endaweni yoko, ukuphakama kofakelo kufuneka kukhethwe ngokwe-engile yokuphakama efunekayo, imo yokusasazeka, inkxaso ekhoyo, kunye neemeko zomhlaba.
Iziphelo zentambo nazo mazihlale zikhuselekile ngaphezu komhlaba kwaye zingabikho ebantwini, kwizakhiwo, kwiintambo zombane, nakwizinto zesinyithi.
Ubude beFrequency kunye neElements
Ii-antenna ezininzi ze-V eziguquliweyo ziyilwe ngobude bomqhubi obupheleleyo obusondele kwisiqingatha sobude bomda kwisantya sokusebenza esicetywayo. Ngokwenyani, ubude obubonakalayo buhlala buhlengahlengiswa kancinci kuba ububanzi bomqhubi, ukugquma, ukuphakama kokufakwa, i-apex angle, kunye nezinto ezikufutshane zichaphazela isantya sokuphendula.
Ubude be-wavelength obuqhelekileyo be-free-space bunxulumene nokuphindaphinda kwe:
[\lambda = \frac{c}{f}]
apho:
- (\lambda) bubude bexesha;
- (c) sisantya sokukhanya;
- (f) yindlela yokusebenza rhoqo.
Le equation inika uqikelelo lokuqala, kodwa ubukhulu bokugqibela be-antenna bufanele buqinisekiswe nge-electromagnetic simulation okanye imilinganiselo yokulahleka kokubuya kunye ne-VSWR.
Ipatheni yoMbane
Ipateni yemitha ye-antenna ye-V eguqulweyo inxulumene ne-dipole ye-half-wave ethe tye, kodwa ukugoba izinto ezantsi kutshintsha ukusasazwa kwentsimi enemilinganiselo emithathu.
I-dipole ethe tye ethe tye idla ngokuvelisa i-radiation ephezulu ecaleni kwentambo kunye ne-deep nulls kwiziphelo zayo. Kwisimo se-V esiguqulweyo, iingalo ezijonge ezantsi zihlala zizalisa ezinye zezi nulls, zidala ukugubungela okubanzi nokufanayo kwe-azimuth.
Ngoko ke i-antenna akufuneki ichazwe ngokuzenzekelayo njengeyasekunene. Ngokuxhomekeke kwi-engile ye-apex, ukuphakama ngaphezu komhlaba, iimpawu zomhlaba, kunye nokuphindaphinda kokusebenza, ipateni ethe tye inokuba malunga neyasekhohlo okanye ingagcina isikhokelo esiphakathi se-broadside.
Ukuphakama kokufakelwa nako kunempembelelo enkulu kwipateni yokuphakama. I-HF inverted V ephantsi kakhulu inokuvelisa imitha enamandla ye-high-engile, enokuba luncedo kunxibelelwano lwe-Near Vertical Incidence Skywave. Ukufakelwa okuphezulu kunokuxhasa ii-engile ezisezantsi zokusuka ezifanelekileyo ngakumbi kunxibelelwano olude.
Ukwahlulahlula
I-antenna ye-V eguquliweyo elinganayo idla ngokuthathwa njenge-polarized ethe tyaba kuba izinto zangoku ezithe tyaba ezivela kwizinto ezimbini ezithambekileyo ziyaqinisana.
Nangona kunjalo, iingalo ezityibilikayo nazo zizisa izinto ezithe nkqo zentsimi. Igalelo lazo lixhomekeke kwi-angle ye-apex, ukujongwa kwe-antenna, ukuphakama kokufakwa, ukubonakaliswa komhlaba, kunye nendawo engqongileyo. Ngenxa yesi sizathu, i-polarization yokwenyani kufakelo lokwenyani isenokungabi ngokuthe tye kuzo zonke iindlela.
Ukondla kunye nokuHlanganisa i-Impedance
Ngenxa yokuba i-inverted V yi-antenna elungelelanisiweyo, kungcono ukuyinika umgca wokudlulisela olungelelanisiweyo okanye usebenzise i-balun efanelekileyo xa uyiqhagamshela kwintambo ye-coaxial engalungelelaniyo.
I-balun inceda ekunciphiseni umbane we-common-mode kumgca wokuphakelwa kombane. Ngaphandle kolawulo olufanelekileyo lwamandla, intambo ye-coaxial inokuba yinxalenye yenkqubo yokurhawuzelela, itshintshe i-antenna impedance, ipateni yemitha, i-polarization, kunye nokusebenza kwengxolo.
Impedance yokufaka ichatshazelwa yi:
- I-angle ye-Apex
- Ubude kunye nobubanzi bezinto
- Ukuphakama ngaphezu komhlaba
- Ukuqhuba komgangatho
- Izakhiwo ezikufutshane
- Ulungiselelo lomgca wesondlo
- Isantya sokusebenza
Emva kokufakela, iinjineli kufuneka zilinganise ilahleko yokubuya okanye i-VSWR kwaye zichebe izinto okanye zilungise inethiwekhi ehambelanayo ukuba kuyimfuneko.
Iingenelo ze-Inverted V Antenna
Uqwalaselo lwe-V oluguquliweyo lubonelela ngeenzuzo ezininzi ezisebenzayo:
- Ifuna inkxaso enye kuphela ephakathi ephezulu
- Ihlala kwindawo ethe tye encinci kune-dipole ethe tye
- Ulwakhiwo olulula nolungabizi kakhulu
- Ifanelekile ukufakwa okuphathekayo nokungaguqukiyo
- Ibonelela nge-azimuth ebanzi
- Ingayilelwa ukusebenza ngebhendi enye okanye ngeebhendi ezininzi
- Iluncedo kunxibelelwano lwe-HF kunye nezicelo ze-NVIS
Imida yoYilo
I-antenna ikwanazo nezinye izinto ezithintelayo:
- Utshintsho lwe-impedance ye-feed-point nge-angle ye-apex
- Inzuzo inokuba ngaphantsi kancinci kuneye-dipole ethe tye efakwe kakuhle
- Ukusebenza kwayo kuyachaphazeleka kubude bofakelo kunye neemeko zomhlaba
- Iintambo eziphantsi zinokubangela iingxaki zokhuseleko kunye nelahleko
- Izakhiwo zesinyithi ezikufutshane zinokuphazamisa indlela yokukhanya kwelanga
- Iinguqulelo zeResonant zihlala zine-bandwidth yokusebenza encinci
- Indlela engafanelekanga yokuhambisa umzila wokutya inokuvelisa imitha yendlela eqhelekileyo
Izicelo eziqhelekileyo
Ii-antenna ze-V eziguqulweyo zisetyenziswa kakhulu kwi:
- Unxibelelwano lwerediyo ye-HF
- Iinkqubo zokudlulisa nokwamkela amaza amafutshane
- Izikhululo zerediyo zabaqalayo
- Unxibelelwano olungxamisekileyo nolwentsimi
- Iinkqubo zeSkywave ezikufutshane neVertical Incidence
- Ukubeka iliso kwirediyo kunye nokujonga i-spectrum
- Izikhululo zonxibelelwano eziphathekayo
- Imfundo ye-antenna, ukulinganisa, kunye novavanyo lokulinganisa
Ukubaluleka koBunjineli
I-antenna ye-V eguqulweyo ibonisa indlela utshintsho oluncinci kwi-geometry ye-antenna olunokuchaphazela ngayo i-impedance, i-polarization, i-gain, kunye ne-radiation coverage.
Ukuqonda olu lwalamano akuluncedo kuphela kuyilo lwee-antenna zentambo, kodwa nakoluphuhliso novavanyo lwee-antenna ze-broadband, ii-antenna ze-horn, ii-antenna arrays, iinkqubo ze-radar, kunye namaqonga okulinganisa i-RF.
I-RF MISOIbonelela ngezisombululo ze-antenna kunye ne-microwave component zovavanyo lwe-RF, unxibelelwano, i-radar, ukulinganisa i-antenna, kunye nokuhlanganiswa kwenkqubo. Ukuqonda ngokucacileyo ithiyori ye-antenna esisiseko kunceda iinjineli zikhethe iimveliso ezifanelekileyo kwaye zihlole ngokuchanekileyo uluhlu lwefrikhwensi, i-gain, i-polarization, i-beamwidth, i-VSWR, kunye nokusebenza kwepatheni yemitha.
Ukuze ufunde okungakumbi ngee-antenna, nceda undwendwele:
Ixesha leposi: Julayi-17-2026
