Yintoni i-V Antenna?
I-antenna ye-AV yi-antenna yentambo eqondisayo eyenziwe zizinto ezimbini eziqhubayo eziphuma ngaphandle ukusuka kwindawo efanayo yokutya. Xa ijongwa phezulu, imilenze emibini ye-antenna yenza isakhiwo esicacileyo esimile okwe-V.
I-antenna ye-V ingathathwa njengolungiselelo oluphuculweyo lwee-radiator ezimbini ezineentambo ezinde. Ngokukhetha ubude bomlenze obufanelekileyo kunye ne-engile efakiweyo, imitha eveliswa ziintambo ezimbini inokuqina kwiindlela ezikhethiweyo, inika ulwalathiso olukhulu kune-antenna enye ethe tye eneentambo ezinde.
Ii-antenna ze-V zihlala zinxulunyaniswa neenkqubo zonxibelelwano ezisebenzisa i-frequency ephezulu, ngakumbi kuluhlu lwe-HF. Nangona kunjalo, i-frequency yazo yokusebenza ayimiselwanga yibhendi esisigxina yodwa. Ukusebenza kokwenyani kuxhomekeke kubude bombane bomlenze ngamnye, i-angle ye-apex, indlela yokutya, ukuphakama kokufakelwa, iimeko zomhlaba ezijikelezileyo, kunye nokuba iziphelo zentambo zivulekile okanye ziphelile.
Ulwakhiwo kunye noMgaqo-siseko wokuSebenza
I-antenna eqhelekileyo ye-V inee-elements ezimbini ezinocingo olude ezidityaniswe kwindawo yokutya elinganayo kwincopho ye-V. Imisinga kwimilenze emibini iyavuthuluka ngokwahlukileyo, oko kuthetha ukuba inobukhulu obulinganayo kunye nezikhokelo ezichaseneyo ezikhawulezileyo kwindawo yokutya.
Intambo nganye ivelisa ipateni yayo yemitha. Xa i-geometry ye-antenna ikhethwe ngokuchanekileyo, ii-lobes ezinkulu zemitha eziveliswa yimilenze emibini ziyadibana kwaye zidibane kwi-axis ephakathi ye-V. Olu longezo lwentsimi lunyusa amandla emitha kwicala elifunekayo kwaye luphucula ulwalathiso lwe-antenna.
Ii-engile ezimbini zihlala zisetyenziswa xa kuchazwe ulwakhiwo:
- I-engile ephakathi kwemilenze emibini ye-antenna yi-engile efakiweyo okanye i-engile ye-apex.
- I-engile ephakathi komlenze omnye kunye ne-axis esembindini yisiqingatha se-engile efakiweyo.
I-engile efanelekileyo ayiloxabiso elizinzileyo eliqhelekileyo. Iyatshintsha ngobude bombane bemilenze ye-antenna kunye nesantya sokusebenza esicwangcisiweyo.
Ulwakhiwo lwe-antenna ye-V enezinto ezimbini ezinocingo olude kunye ne-apex angle
Ii-Antennas ze-V eziHlaziyiweyo neziPhelisiweyo
Ii-antenna ze-V ngokubanzi zinokwahlulwa zibe ziindlela ezimbini zokucwangcisa.
I-antenna ye-V evulekileyo okanye evakalayo ibonisa inxalenye ye-current wave evela kwiziphelo zee-conductors zayo. Ezi mbonakalo zidala amaza amiyo ecaleni kwemilenze ye-antenna. Olu hlobo lwe-antenna ludla ngokuvelisa ipateni yemitha ye-bidirectional, enemitha enamandla kumacala amabini achaseneyo ecaleni kwe-antenna axis.
I-antenna ye-V ephelileyo isebenzisa imithwalo yokumelana neziphelo ezikude zeengcingo ezimbini. Imithwalo inciphisa ukubonakaliswa kwamandla kwaye inceda ukugcina ukusebenza kwamaza okuhambahamba. Oku kunokucinezela imitha kwicala elingasemva kwaye kwenze ipateni yokuphela komlilo kwicala elingaphezulu.
Uyilo oluphelisiweyo ludla ngokubonelela ngendlela ehambelanayo ngakumbi kuluhlu olubanzi lwamaza, kodwa amanye amandla e-RF ayasasazeka kwii-resistor eziphelisiweyo. Ngoko ke umyili we-antenna kufuneka alinganisele i-bandwidth, i-directivity, ukusebenza kakuhle, kunye neemfuno zokuphatha amandla.
Uluhlu lweeFrequency kunye nobude boMbane
Ii-antenna zemveli ze-V zisetyenziswa kakhulu kuluhlu lwe-HF ukusuka malunga ne-3 ukuya kwi-30 MHz kuba ubude be-wavelengths kule band benza izakhiwo ze-antenna ezisekelwe kwiingcingo zibe luncedo ekufakweni konxibelelwano oluzinzileyo.
Nangona kunjalo, i-antenna ye-V ichazwa yijometri yayo kunye nobude bayo bombane endaweni yoluhlu olunye lwefrikhwensi oluyimfuneko. Umlenze ngamnye unokuba nobude be-wavelength obuyihafu, ubude be-wavelength obuyi-1, okanye ubude be-wavelengths eziliqela, kuxhomekeke kwipateni yemitha efunekayo kunye nokwanda kwayo.
Njengoko ubude bombane bemilenze bukhula, i-antenna directionactivity ngokubanzi inokuphucula. Kwangaxeshanye, ii-side lobes ezongezelelweyo zinokuvela, kwaye ipateni yemitha inokuba novakalelo ngakumbi kwi-frequency, ukuphakama kokufakwa, ukuhanjiswa komhlaba, kunye nokunyamezelana kokwakhiwa.
Iphethini yeMisebe kunye neZikhokelo
Ipateni yemitha ye-antenna ye-V evakalayo idla ngokuba macala omabini. Amasimi aveliswa zizinto ezimbini zentambo adibana ukwenza ii-lobes ezinkulu ezilungelelaniswe ne-axis ephakathi ye-V.
Ipateni yokugqibela yemitha imiselwa zizinto ezininzi:
- Ubude bomlenze ngamnye we-antenna
- I-engile ephakathi kwemilenze ifakiwe
- Isantya sokusebenza
- Ukuphazamiseka kwendawo yokutya kunye nokuhambelana
- Ukuphakama kofakelo ngaphezu komhlaba
- Ububanzi bentambo kunye nokulahleka komqhubi
- Uqwalaselo oluvulekileyo okanye oluphelisiweyo
Ukwandisa ubude bomlenze kunokuvelisa i-directivity ephezulu, kodwa kunokudala ii-side lobes ezinamandla. Ngenxa yesi sizathu, i-antenna gain akufanele ithathwe ngokuzimeleyo ukusuka kwi-beamwidth, i-side-lobe level, i-front-to-back ratio, kunye nokusebenza kwe-impedance.
Ipateni yemitha ye-antenna ye-V ejikelezayo
Ukondla kunye nokuHlanganisa i-Impedance
Ngenxa yokuba i-antenna ye-V idla ngokuba yintambo elungeleleneyo, idla ngokutyalwa ngomgca wokudlulisela olungeleleneyo. Ukuba kusetyenziswa intambo ye-coaxial, inethiwekhi efanelekileyo ye-balun okanye ehambelanayo inokufuneka ukunciphisa umbane we-common-mode kwintambo kunye nokugcina ipateni yemitha elinganayo.
I-input impedance iyatshintsha ngobude bomlenze, i-apex angle, i-frequency yokusebenza, ukuphakama kokufakwa, kunye nezakhiwo ezikufutshane. Ukuhambelana kwe-impedance ngokufanelekileyo kubalulekile ekunciphiseni amandla abonakalisiweyo kunye nokufezekisa ukusebenza okuzinzileyo kwenkqubo.
Kuphuhliso lwe-antenna olusebenzayo, iinjineli zihlala zivavanye ilahleko yokubuya, i-VSWR, ipatheni yemitha, i-gain, i-polarization, kunye nokusebenza kakuhle ngaphambi kokuba zigqibezele i-geometry ye-antenna.
Iingenelo ze-V Antennas
I-antenna ye-V ineenzuzo ezininzi ezisebenzayo:
- Ulwakhiwo olulula olusekelwe kwiingcingo
- Ulwalathiso oluphezulu kunento enye enocingo olude
- Ixabiso lokuvelisa eliphantsi kakhulu
- Ifanelekile kwiifakelo ezinkulu ze-HF ezisisigxina
- Ubude bemilenze eguquguqukayo kunye noyilo lwe-apex-angle
- Ifumaneka kwiindlela zokuhombisa ezivakalayo nezihambayo
Imida yoYilo
Ii-antenna ze-V nazo zinemida eliqela:
- Zifuna indawo enkulu yokufakela kwiifrequensi eziphantsi.
- Iinguqulelo zeResonant zinokubangela amaza aqinileyo.
- Imilenze emide ye-antenna inokuvelisa ii-side lobes ezibalulekileyo.
- Ukusebenza kunokutshintsha ngokuphawulekayo ngokwexesha.
- Iimeko zomhlaba kunye nokuphakama kofakelo kunokuchaphazela ipateni yemitha.
- Iinguqulelo eziphelisiweyo zilahlekelwa bubuchule obuthile kuba amandla afunxwa yimithwalo.
Izicelo eziqhelekileyo
Ii-antenna ze-V bezisetyenziswa ngokwesiko kwezi:
- Unxibelelwano lwerediyo olusebenzisa i-HF point-to-point
- Izikhululo zokusasaza nokwamkela amaza e-Shortwave
- Amakhonkco onxibelelwano oluzinzileyo olukude
- Iinkqubo zokubeka esweni unomathotholo kunye nokwamkela imiqondiso
- Uphando lonxibelelwano kunye nemfundo ye-antenna
- Uvavanyo lwe-antenna ye-wire-directional
- Iinkqubo zonxibelelwano ezingxamisekileyo nezikude
Ukubaluleka koBunjineli
Nangona iinkqubo zonxibelelwano zanamhlanje zisebenzisa kakhulu ii-compact arrays, ii-antenna ze-horn, ii-antenna ze-broadband, kunye neenkqubo ze-antenna ezilawulwa nge-elektroniki, i-antenna ye-V isaqhubeka nokuba yimodeli ebalulekileyo kwithiyori ye-antenna.
Ibonisa ngokucacileyo indlela ubude bomqhubi, isigaba sangoku, ijiyometri ye-antenna, kunye ne-field superposition ezichaphazela ngayo inzuzo kunye nolwalathiso lwemitha. Ukuqonda olu lwalamano kubalulekile xa ufunda izakhiwo ze-antenna eziphucukileyo, kubandakanya ii-arrays ezicwangcisiweyo, ii-antenna zokulinganisa i-broadband, ii-antenna ze-microwave ezibhekiselele kwicala, kunye neenkqubo zovavanyo lwe-antenna.
I-RF MISO iphuhlisa izisombululo ze-antenna kunye ne-microwave zovavanyo lwe-RF, umlinganiselo, unxibelelwano, i-radar, kunye nokusetyenziswa kokudibanisa inkqubo. Ukuqonda okuqinileyo kwezakhiwo ze-antenna ezisisiseko kunceda iinjineli zikhethe iimveliso ezifanelekileyo kwaye zivavanye iiparameter eziphambili ezifana ne-gain, polarization, beamwidth, impedance, kunye ne-radiation pattern.
Ukuze ufunde okungakumbi ngee-antenna, nceda undwendwele:
Ixesha lokuthumela: Julayi-10-2026
