Kwicandelo lezixhobo zemitha ye-electromagnetic, ii-antenna ze-RF kunye nee-antenna ze-microwave zihlala zibhidaniswa, kodwa eneneni kukho umahluko osisiseko. Eli nqaku lenza uhlalutyo lobuchwephesha oluvela kwiinkalo ezintathu: inkcazo yebhendi yefrikhwensi, umgaqo woyilo, kunye nenkqubo yokuvelisa, ngakumbi ukudibanisa iiteknoloji eziphambili ezifanaibrashi ye-vacuum.
I-RF MISOIsithando somlilo se-Vacuum Brazing
1. Uluhlu lwebhendi yefrikhwensi kunye neempawu zomzimba
I-antenna ye-RF:
Ibhendi yefrikhwensi yokusebenza yi-300 kHz - 300 GHz, egubungela usasazo lwamaza aphakathi (535-1605 kHz) ukuya kwi-millimeter wave (30-300 GHz), kodwa usetyenziso oluphambili lugxile kwi-<6 GHz (njenge-4G LTE, i-WiFi 6). Ububanzi bobude bude (isentimitha ukuya kwinqanaba lemitha), ulwakhiwo ikakhulu luyi-dipole kunye ne-whip antenna, kwaye uvakalelo lokunyamezela luphantsi (±1% ubude bobude buyamkeleka).
I-antenna ye-microwave:
Ngokukodwa i-1 GHz - 300 GHz (i-microwave ukuya kwi-millimeter wave), iibhendi eziqhelekileyo ze-frequency zesicelo ezifana ne-X-band (8-12 GHz) kunye ne-Ka-band (26.5-40 GHz). Iimfuneko ze-longflow emfutshane (inqanaba le-millimeter):
✅ Ukuchaneka kokucubungula kwinqanaba le-Submillimeter (ukunyamezelana ≤±0.01λ)
✅ Ulawulo oluqinileyo lokurhabaxa komphezulu (< 3μm Ra)
✅ I-substrate ye-dielectric elahleka kancinci (ε r ≤2.2, tanδ≤0.001)
2. Isiseko sobuchwepheshe bokuvelisa
Ukusebenza kwee-antenna ze-microwave kuxhomekeke kakhulu kubuchwepheshe bokuvelisa obuphezulu:
| Ubuchwepheshe | I-antenna ye-RF | I-Antena ye-Microwave |
| Itekhnoloji yoqhagamshelo | Ukutywina/Ukubopha nge-screw | I-Vacuum Braced |
| Ababoneleli abaqhelekileyo | Ifektri ye-elektroniki ngokubanzi | Iinkampani zeBrazing ezifana neSolar Atmospheres |
| Iimfuno zokuwelda | Uqhagamshelo oluqhubayo | Akukho kungena kweoksijini, uhlengahlengiso lwesakhiwo sengqolowa |
| Iimpawu eziphambili | Ukuxhathisa okungapheliyo <50mΩ | Ukuhambelana kwe-coefficient yokwandiswa kobushushu (ΔCTE<1ppm/℃) |
Ixabiso eliphambili le-vacuum brazing kwi-antenna ze-microwave:
1. Uqhagamshelo olungena-oxidation: ukurhawuzelela kwindawo yokutshiza i-vacuum ye-10 -5 Torr ukuze kuthintelwe i-oxidation yee-Cu/Al alloys kunye nokugcina i-conductivity >98% IACS
2. Ukususa uxinzelelo olushushu: ukufudumeza i-gradient ukuya phezulu kwe-liquidus yezinto ezisetyenziswa ekutshiseni (umz. i-BAISi-4 alloy, i-liquidus 575℃) ukususa ii-microcracks
3. Ulawulo lokuguquguquka: ukuguqulwa ngokubanzi <0.1mm/m ukuqinisekisa ukuhambelana kwesigaba samaza se-millimeter
3. Uthelekiso lwendlela esebenza ngayo umbane kunye neemeko zesicelo
Iimpawu zemitha:
1.I-antenna ye-RF: imitha ye-omnidirectional ikakhulu, i-gain ≤10 dBi
2.I-antenna ye-microwave: ibhekisa kwicala eliphezulu (ububanzi be-beam yi-1°-10°), zuza i-15-50 dBi
Izicelo eziqhelekileyo:
| I-antenna ye-RF | I-Antena ye-Microwave |
| Inqaba yerediyo ye-FM | Iinxalenye ze-T/R zeRadar yePhased Array |
| Izinzwa ze-IoT | I-feed yonxibelelwano lwesathelayithi |
| Iithegi zeRFID | I-5G mmWave AAU |
4. Umahluko wokuqinisekisa uvavanyo
I-antenna ye-RF:
- Ingqwalasela: Ukuthelekiswa kwe-Impedance (VSWR < 2.0)
- Indlela: Ukutshiza rhoqo kwe-Vector network analyzer
I-antenna ye-microwave:
- Ingqwalasela: Ipateni yokukhanya/ukuhambelana kwesigaba
- Indlela: Ukuskena okukufutshane nentsimi (ukuchaneka kwe-λ/50), uvavanyo oluncinci lwentsimi
Isiphelo: Ii-antenna ze-RF zingundoqo wonxibelelwano olungenazingcingo ngokubanzi, ngelixa ii-antenna ze-microwave zingundoqo kwiinkqubo ze-high-frequency kunye ne-high-precision. Inxalenye ephakathi kwezi zimbini yile:
1. Ukwanda kobuninzi kukhokelela kubude obufutshane be-wavelength, nto leyo ebangela utshintsho kwindlela yoyilo
2. Utshintsho kwinkqubo yokuvelisa - ii-antenna ze-microwave zixhomekeke kubuchwepheshe obuphambili obufana ne-vacuum brazing ukuqinisekisa ukusebenza kakuhle
3. Ubunzima bovavanyo bukhula ngokukhawuleza
Izisombululo ze-vacuum brazing ezibonelelwa ziinkampani zobungcali ze-brazing ezifana ne-Solar Atmospheres ziye zaba sisiqinisekiso esibalulekileyo sokuthembeka kweenkqubo zamaza e-millimeter. Njengoko i-6G isanda ukuya kwi-terahertz frequency band, ixabiso lale nkqubo liya kuba likhulu ngakumbi.
Ukuze ufunde okungakumbi ngee-antenna, nceda undwendwele:
Ixesha leposi: Meyi-30-2025
