Iyini i-Antenna ye-V?
I-antenna ye-AV iyi-antenna yentambo eqondisa ngqo eyakhiwe yizinto ezimbili eziqhubayo ezinwebeka ngaphandle zisuka endaweni efanayo yokudla. Uma zibukwa phezulu, imilenze emibili ye-antenna yakha isakhiwo esicacile esinomumo ongu-V.
I-antenna engu-V ingabhekwa njengohlelo oluthuthukisiwe lwama-radiator amabili anocingo olude. Ngokukhetha ubude bomlenze obufanele kanye ne-engeli efakiwe, imisebe ekhiqizwa yizintambo ezimbili ingaqina eziqondisweni ezikhethiwe, inikeze isiqondiso esikhulu kune-antenna eyodwa enocingo olude oluqondile.
Ama-antenna e-V avame ukuhlotshaniswa nezinhlelo zokuxhumana ezisebenzisa imvamisa ephezulu, ikakhulukazi ebangeni le-HF. Kodwa-ke, imvamisa yokusebenza kwawo ayinqunywa yibhande eliqinile lodwa. Ukusebenza kwangempela kuncike ebudeni bukagesi bomlenze ngamunye, i-engeli ye-apex, indlela yokudla, ukuphakama kokufakwa, izimo zomhlaba ezizungezile, nokuthi iziphetho zentambo zivulekile noma ziphelile.
Isakhiwo kanye Nesimiso Sokusebenza
I-antenna evamile ye-V iqukethe izinto ezimbili ezinocingo olude ezixhunywe endaweni yokuphakela elinganiselayo esicongweni se-V. Amaza emilenzeni emibili avuselelwa ngendlela ehlukile, okusho ukuthi anobukhulu obulinganayo kanye neziqondiso eziphambene ngokushesha endaweni yokuphakela.
Intambo ngayinye ikhiqiza iphethini yayo yemisebe. Uma i-geometry ye-antenna ikhethwe kahle, ama-lobes amakhulu emisebe akhiqizwa yimilenze emibili ayahlangana futhi ahlangane eceleni kwe-axis ephakathi ye-V. Lokhu kwengezwa kwensimu kwandisa amandla emisebe ohlangothini olufunwayo futhi kuthuthukisa ukuqondiswa kwe-antenna.
Ama-engeli amabili avame ukusetshenziswa lapho kuchazwe isakhiwo:
- I-engeli ephakathi kwemilenze emibili ye-antenna yi-engeli efakiwe noma eyinhloko.
- I-engeli ephakathi komlenze owodwa kanye ne-axis ephakathi iyingxenye ye-engeli efakiwe.
I-engeli efanele ayilona inani elihlala lihleli. Iyashintsha ngobude bukagesi bemilenze ye-antenna kanye nemvamisa yokusebenza ehlosiwe.
Isakhiwo se-antenna engu-V esinezinto ezimbili zocingo olude kanye ne-angle ye-apex
Ama-Antenna e-V aqabulayo futhi aqediwe
Ama-antenna e-V ngokuvamile angahlukaniswa ngamalungiselelo amabili.
I-antenna ye-V evulekile noma ezwakalayo ikhombisa ingxenye yegagasi lamanje elivela emaphethelweni abaqondisi bayo. Lokhu kubonakaliswa kudala amagagasi amile eduze kwemilenze ye-antenna. Lolu hlobo lwe-antenna luvame ukukhiqiza iphethini yemisebe ejikelezayo, enemisebe enamandla ngezindlela ezimbili eziphambene eduze kwe-antenna axis.
I-antenna ye-V eqediwe isebenzisa imithwalo yokumelana ekugcineni kwezintambo ezimbili. Imithwalo inciphisa ukubonakaliswa kwamanje futhi isiza ukugcina ukusebenza kwamagagasi okuhamba. Lokhu kungacindezela imisebe ngendlela ephambene futhi kudale iphethini yomlilo oqondile.
Umklamo oqediwe uvame ukunikeza ukuziphatha okuqondile okuhamba phambili kububanzi bemvamisa ebanzi, kodwa amanye amandla e-RF ayahlakazeka kuma-resistor aqedayo. Ngakho-ke, umklami we-antenna kumele alinganisele i-bandwidth, isiqondiso, ukusebenza kahle, kanye nezidingo zokuphatha amandla.
Ibanga Lokuphindaphindwa Nobude Bukagesi
Ama-antenna endabuko e-V asetshenziswa kabanzi kububanzi be-HF kusukela cishe ku-3 kuya ku-30 MHz ngoba ubude bamaza obude kuleli bhande benza izakhiwo ze-antenna ezisekelwe ocingweni zibe usizo ekufakweni kokuxhumana okuhleliwe.
Kodwa-ke, i-antenna ye-V ichazwa yi-geometry yayo nobude bayo bukagesi kunokuba ibe yibanga elilodwa lemvamisa elidingekayo. Umlenze ngamunye ungaba nobude obuyisigamu, ubude obuyisigamu, noma ubude obuyi-wavelength eziningana, kuye ngephethini yemisebe edingekayo kanye nokukhula kwayo.
Njengoba ubude bukagesi bemilenze bukhula, ukuqondiswa kwe-antenna ngokuvamile kungathuthuka. Ngesikhathi esifanayo, kungase kuvele ama-side lobes engeziwe, futhi iphethini yemisebe ingaba bucayi kakhulu ekuvameni, ukuphakama kokufakwa, ukuhanjiswa komhlaba, kanye nokubekezelelana kokwakhiwa.
Iphethini kanye Nesiqondiso Semisebe
Iphethini yemisebe ye-antenna ye-V ezwakalayo ivame ukuba yi-bidirectional. Amasimu akhiqizwa yizinto ezimbili zensimbi ahlangana ukuze akhe ama-lobes amakhulu aqondaniswe cishe ne-axis ephakathi ye-V.
Iphethini yokugcina yemisebe inqunywa yizici eziningana:
- Ubude bomlenze ngamunye we-antenna
- I-engeli ephakathi kwemilenze efakiwe
- Imvamisa yokusebenza
- Ukuphazamiseka kwe-feed-point kanye nokufanisa
- Ukuphakama kokufakwa ngaphezu komhlabathi
- Ububanzi bentambo kanye nokulahlekelwa komqhubi
- Ukucushwa okuvulekile noma okuqediwe
Ukwandisa ubude bomlenze kungadala ukuqondisa okuphezulu, kodwa kungadala nama-side lobes aqinile. Ngenxa yalesi sizathu, ukukhuphuka kwe-antenna akufanele kucatshangelwe ngokuzimela kusuka ku-beamwidth, izinga le-side-lobe, isilinganiso sangaphambili kuya emuva, kanye nokusebenza kwe-impedance.
Iphethini yemisebe eqondiswe kabili ye-antenna ye-V ezwakalayo
Ukondla kanye nokulinganisa i-Impedance
Ngenxa yokuthi i-antenna ye-V ivame ukuba yisakhiwo sentambo esilinganiselayo, ivame ukuphakelwa ngomugqa wokudlulisela olinganiselayo. Uma kusetshenziswa ikhebula le-coaxial, kungadingeka inethiwekhi efanele ye-balun noma efanayo ukuze kuncishiswe ugesi wemodi evamile kukhebula futhi kugcinwe iphethini yemisebe elinganayo.
I-impedance yokufaka iyashintsha ngobude bomlenze, i-engeli ye-apex, imvamisa yokusebenza, ukuphakama kokufakwa, kanye nezakhiwo eziseduze. Ukuqhathaniswa okufanele kwe-impedance kubalulekile ekunciphiseni amandla abonakalayo kanye nokufeza ukusebenza okuzinzile kwesistimu.
Ekuthuthukisweni kwe-antenna okusebenzayo, onjiniyela bavame ukuhlola ukulahlekelwa kokubuya, i-VSWR, iphethini yemisebe, inzuzo, ukwahlukana, kanye nokusebenza kahle ngaphambi kokuqedela i-geometry ye-antenna.
Izinzuzo ze-V Antennas
I-antenna engu-V inikeza izinzuzo eziningana ezisebenzayo:
- Ukwakhiwa okulula okusekelwe ku-wire
- Ukuqondisa okuphezulu kunesici esisodwa socingo olude
- Izindleko zokukhiqiza eziphansi kakhulu
- Ifanele ukufakwa okukhulu kwe-HF okuzinzile
- Ubude bomlenze obuguquguqukayo kanye nomklamo we-apex-angle
- Kutholakala ngokulungiswa kwe-resonant kanye ne-traveling-wave
Ukulinganiselwa Kokuklama
Ama-antenna e-V nawo anemikhawulo eminingana:
- Zidinga isikhala esikhulu sokufakwa kumaza aphansi.
- Izinguqulo ze-Resonant zingase zikhiqize amagagasi aqinile amile.
- Imilenze emide ye-antenna ingakhiqiza ama-side lobes abalulekile.
- Ukusebenza kungashintsha ngokuphawulekayo ngokuvama.
- Izimo zomhlabathi kanye nokuphakama kokufakwa kungathinta iphethini yemisebe.
- Izinguqulo eziqediwe zilahla ukusebenza kahle okuthile ngoba amandla amuncwa yimithwalo.
Izicelo Ezijwayelekile
Ama-antenna e-V asetshenziswa ngokwesiko ku:
- Ukuxhumana komsakazo we-HF oqondile
- Iziteshi zokudlulisa nokwamukela amaza e-Shortwave
- Izixhumanisi zokuxhumana ezihlala isikhathi eside
- Izinhlelo zokuqapha umsakazo kanye nokwamukela amasignali
- Ucwaningo lokuxhumana kanye nemfundo ye-antenna
- Ukuhlolwa kwe-antenna yentambo eqondisayo
- Izinhlelo zokuxhumana eziphuthumayo nezikude
Ukubaluleka Kobunjiniyela
Nakuba izinhlelo zokuxhumana zanamuhla zisebenzisa kakhulu ama-compact arrays, ama-antenna e-horn, ama-antenna e-broadband, kanye nezinhlelo ze-antenna ezilawulwa ngogesi, i-antenna ye-V isalokhu iyimodeli ebalulekile kumbono we-antenna.
Kubonisa ngokusobala ukuthi ubude bomqhubi, isigaba samanje, i-geometry ye-antenna, kanye ne-field superposition kuthinta kanjani inzuzo kanye nesiqondiso somsebe. Ukuqonda lobu budlelwano kubalulekile lapho ufunda izakhiwo ze-antenna ezithuthuke kakhulu, kufaka phakathi ama-array ahlukaniswe ngezigaba, ama-antenna okulinganisa i-broadband, ama-antenna e-microwave aqondisayo, kanye nezinhlelo zokuhlola i-antenna.
I-RF MISO ithuthukisa izixazululo ze-antenna kanye ne-microwave zokuhlola i-RF, ukulinganisa, ukuxhumana, i-radar, kanye nezinhlelo zokusebenza zokuhlanganisa uhlelo. Ukuqonda okuqinile kwezakhiwo ze-antenna eziyisisekelo kusiza onjiniyela ukukhetha imikhiqizo efanelekile futhi bahlole amapharamitha abalulekile njenge-gain, polarization, beamwidth, impedance, kanye ne-radiation pattern.
Ukuze ufunde kabanzi ngama-antenna, sicela uvakashele:
Isikhathi sokuthunyelwe: Julayi-10-2026
