Izixhumi ze-RF coaxial, njengezingxenye ezibalulekile{0}}zokudlulisa isignali yemvamisa, zisetshenziswa kakhulu kwezokuxhumana, emkhathini, ekuhloleni nasekukaleni, nakwezinye izinkambu. Ukusebenza kwabo kuthinta ngokuqondile ubuqotho besignali, ukusebenza kahle kokudlulisela, nokuthembeka kwesistimu. Le ndatshana ichaza ngokuhlelekile izindlela zobuchwepheshe ezibalulekile zezixhumi ze-RF coaxial ngokombono wokukhethwa kwezinto, ukwakheka kwesakhiwo, izinqubo zokukhiqiza, nokuqinisekiswa kokuhlolwa.
Ukukhethwa Kwezinto Zokusebenza Nokwelashwa Kwendawo
Ukusebenza kwezixhumi ze-RF coaxial kuncike kakhulu ekukhethweni kwezinto ezibonakalayo. Ikhondakta emaphakathi ngokuvamile yenziwe ngezinto ezisebenza kakhulu ezifana ne-beryllium copper (BeCu), i-phosphor bronze (PhBr), noma igolide{1}}ingxube yethusi ecwecwe ukuze kuqinisekiswe ukumelana nokuxhumana okuphansi nezici ezinhle kakhulu zokudlulisa isignali. Ikhondakta yangaphandle ivamise ukwenziwa ngensimbi engagqwali (efana ne-SUS303, SUS316) noma ithusi (njenge-H59, H62) ukuze ibhalansise amandla emishini nokucutshungulwa. I-dielectric evikelayo ngokuvamile yenziwa nge-polytetrafluoroethylene (PTFE), i-polyimide (PI), noma i-ceramic ukuze inikeze izici ezinzile ze-dielectric kanye nezici zokulahlekelwa okuphansi.
Ukwelashwa okungaphezulu kubalulekile ekumelaneni nokugqwala kwesixhumi nokuthembeka kokuxhumana. Ukwelashwa okuvamile kufaka igolide (Au), i-nickel (Ni), noma isiliva (Ag) plating. I-Gold plating isetshenziswa kakhulu-ezimeni ezinokwethenjelwa okuphezulu ngenxa yokumelana kwayo kahle ne-oxidation kanye nokumelana okuphansi kokuxhumana; i-nickel plating inikeza ukumelana okuhle kakhulu kokugqoka kanye nokuvikelwa kwe-interlayer.
Idizayini Yesakhiwo kanye Nemingcele Ebalulekile
Idizayini yesakhiwo yezixhumi ze-RF coaxial kufanele ihambisane ngokuqinile nethiyori yenkundla ye-electromagnetic ukuze kuqinisekiswe ukufaniswa kwe-impedance (imvamisa engu-50Ω noma 75Ω) ukuze kuncishiswe ukubonakaliswa kwesignali. Izakhi eziyinhloko zihlanganisa:
1. Ukumadanisa I-Impedans: Ngokulawula ngokunembile ububanzi be-conductor yangaphakathi, ukushuba kokufakwayo, kanye nobubanzi bangaphakathi be-conductor yangaphandle, umugqa wokudlulisa i-impedance wesici uqinisekiswa ukuhambisana nezidingo zesistimu.
2. Ukuthuthukiswa Kwesixhumi Esibonakalayo: Ukusebenzisa isakhiwo sokuxhumana esiqinile (njengephini-kanye{2}}nomklamo wesokhethi) kuthuthukisa ukuzinza kwemishini futhi kunciphisa ukumelana nokuxhumana.
3. Ukusebenza Kwesivikelo: Idizayini ye-conductor yangaphandle eqhubekayo (njengokuxhuma okunentambo noma ukukhiya kwe-bayonet) kucindezela ngempumelelo ukuphazanyiswa kwe-electromagnetic (EMI).
Ngaphezu kwalokho, amapharamitha abalulekile afana nobubanzi befrikhwensi, ukulahlekelwa kokufaka, isilinganiso se-voltage Stand Wave (VSWR), nokuqina (imijikelezo yokukhwelana) kufanele kuqinisekiswe ngokulingisa nokuhlola.
Inqubo Yokukhiqiza kanye Nomshini Wokunemba
Ukwenziwa kwezixhumi ze-RF coaxial kuhlanganisa-ubuchwepheshe bemishini obunembayo, ikakhulukazi obuhlanganisa lezi zinyathelo ezilandelayo:
1. Ukumayinisa: Izinqubo zokujika ze-CNC noma ukunemba kwesitembu zisetshenziselwa umshini amakhondatha angaphakathi nangaphandle, okuqinisekisa ukubekezelelana kwe-dimensional phakathi kuka-±0.01mm.
2. I-Insulator Molding: Izinto ze-Dielectric ezifana ne-PTFE zilungiswa ngokubumba umjovo noma nge-mechanical crimping ukuze kuqinisekiswe ukuhambisana okuqinile namakhondakta.
3. Ukwelapha Okungaphezulu: Inqubo yokucwenga i-electroplating idinga ukulawula okuqinile kokujiya kokumboza (isb., ungqimba lwegolide Olukhulu noma olulingana no-1μm) kanye nokufana ukuze kugwenywe ukungaqhubeki ekudluliselweni kwesignali.
Kuzinhlelo zokusebenza-zemvamisa ephezulu (njengama-millimeter{1}}ama-wave bands), amasu e-micromachining (okufana nokunquma nge-laser) nawo ayadingeka ukuze kuthuthukiswe ukwakheka kwe-electrode.
Ukuhlola Nokuqinisekisa Ikhwalithi
Ukuqinisekisa ukuthi ukusebenza kwesixhumi kuhlangabezana namazinga (afana ne-IEC 61169 ne-MIL-STD-348), ukuhlolwa okuphelele nokuqinisekiswa kuyadingeka, okuhlanganisa:
1. Ukuhlolwa kokusebenza kukagesi: Ukulinganisa ukulahlekelwa kokufaka, ukulahlekelwa kokubuyisela (VSWR), ukumelana nokuxhumana, kanye nokuphendula kwemvamisa.
2. Ukuhlolwa kokusebenza kwemishini: Ukulinganisa amandla okufaka nawokususa, amandla okugcina, kanye nokumelana nokudlidliza/ukuthuthumela.
3. Ukuhlolwa kokuvumelana nezimo zemvelo: Kubandakanya ukuhamba ngebhayisikili okuphakeme nokuphansi kwezinga lokushisa (-55℃ukuya ku-+125℃), ukuhlolwa kwesifutho sikasawoti, nokuhlola umswakama.
Amasistimu okuhlola azenzakalelayo (afana ne-vector network analyzers (VNAs)) angakwazi ukuthwebula idatha ebalulekile futhi aqondise ukwenziwa ngcono kwedizayini.
Ukuthuthukisa ukusebenza kwezixhumi ze-RF coaxial kuncike ekusebenzisaneni kwesayensi yezinto, ukukhiqizwa okunembayo, nokuhlola okunzima. Ngokuthuthukiswa kwe-5G, ukuxhumana ngesathelayithi, kanye{2}}nobuchwepheshe bokudluliswa kwedatha ngesivinini esiphezulu, izixhumi zizothuthukela kumafrikhwensi aphezulu (afana ne-terahertz), osayizi abancane, kanye nokulahlekelwa okuphansi. Ukuthuthukiswa okuqhubekayo ekwakhiweni nasenqubweni kungathuthukisa ukuthembeka kwazo nokuvumelana nezimo ezindaweni eziyingozi kakhulu.