I-Antenna
I-High Gain L-Band Directional Spiral Antenna /Helical Antenna
imininingwane yomkhiqizo
I-helical antenna/Spiral antenna wuhlobo olukhethekile lothi olungadlulisa futhi lwamukele amasiginali we-polarized electromagnetic azungeza emkhathini. Lolu hlobo lwe-antenna luvame ukusetshenziswa eziteshini ezingaphansi kwezokuxhumana ngesathelayithi futhi lwakhiwe ama-spirals ensimbi anezakhiwo ezinhle zokuqhuba. Ivamise ukuphakelwa ngekhebula eliqinile, lapho intambo eyinhloko yekhebula elikhoaxial ixhunywe ekugcineni kwentambo ezungezayo futhi ikhondakta yangaphandle ixhunywe kunemeshi yensimbi esekelwe phansi noma ipuleti. Izici zemisebe ye-antenna evunguzayo zihlobene eduze nesiyingi sokuzungeza kwayo: lapho isiyingi sincane kakhulu kunobude begagasi, isiqondiso semisebe esiyinhloko sincike ku-spiral axis; lapho i-circumference iseduze nobude be-wavelength, imisebe enamandla kakhulu ibonakala iqondise i-axis spiral.
Ama-antenna ama-Helical/Ama-Spiral antenna anezici ezilandelayo ezibalulekile:
- Imisebe igxile kakhulu ohlangothini lwe-eksisi lwe-antenna.
- Iyakwazi ukukhiqiza amagagasi agqagqana ayindilinga, amelana ngokuphumelelayo nemithelela yezindlela eziningi kanye nokuphazamiseka kwesignali.
- Ukusatshalaliswa kwamanje ku-antenna kukhombisa ukuma kwegagasi elihambayo, okusiza ukufeza umphumela ofanayo wemisebe.
- I-impedance yokufaka iseduze nokumelana okumsulwa, okwenza kube lula ukuklama kwenethiwekhi efanayo futhi kuthuthukise ukusebenza kahle.
- Inezici ze-broadband futhi ingagcina ukusebenza kahle kwemisebe phakathi kwebanga elibanzi lefrikhwensi.
Ngenxa yesici sazo esiyisicaba, ukusebenza kahle kwe-circular polarization, namandla amahle kakhulu omlilo kanye nomlilo oseceleni, izimpondo ze-helical zisetshenziswe kabanzi emikhakheni eminingi efana ne-aerospace, meteorology, positioning, kanye ne-relay yezokuxhumana. Ngokuthuthuka okuqhubekayo kobuchwepheshe bokuxhumana okungenantambo, ukusebenza kukagesi okuphakeme kwezimpondo ze-helical kulindeleke ukuba kubanike indawo ebanzi yokusetshenziswa kanye nentuthuko esikhathini esizayo.
| Imodeli | ZD-LBA-1500/1700M-N |
| ImvamisaRintukuthelo | 1500MHz-1700MHz |
| ImileINave | ≤2 |
| Zuza | 10-20 dBi |
| I-polarizationMode | I-polarization eyindilinga yesandla sokudla |
| UkuqondisaDiagram | Ukuqondisa |
| IngxenyePoweBi-eamwidth | 20 °-40 ° |
| I-AxialRisiqephu | ≤ 3dB (axial) |
| Isixhumi esibonakalayo | N-50K |
| Isisindo | 5Kg |
| Usayizi | φ130mm×L600mm (i-reflector plate φ300mm) |
| I-AntennaMizinto zokwakha | I-Base plate aluminium, i-spiral copper, i-fiberglass yekhava yangaphandle (engangeni manzi) |