Ukuqonda izici zemvamisa yokusebenza kwezixhumi ze-coaxial kubalulekile konjiniyela ekukhetheni isixhumi esifanele. Lesi sihloko sizocubungula umqondo wokusebenza kwemvamisa kuzixhumi ze-RF coaxial futhi sinikeze incazelo enemininingwane yezimpawu zemvamisa kanye nokusetshenziswa kwezimboni kwezixhumi ezihlukene.
Iyini imvamisa yokusebenza yesixhumi se-coaxial?
Ifrikhwensi yokusika ephansi yesixhumi se-RF coaxial inguziro, futhi imvamisa yokusebenza ephezulu imvamisa ingu-95% wefrikhwensi yokusika.
Imvamisa yokusebenza incike esakhiweni sesixhumi. Ububanzi befrikhwensi yanoma yisiphi isixhumi bukhawulelwe imodi yokuqala eyindilinga ye-waveguide evela kusakhiwo se-coaxial. Ukunciphisa usayizi wekhebula kungakhuphula imvamisa yokunqamuka kwesixhumi, kuyilapho ukugcwalisa ngento ye-dielectric kuzokwehlisa imvamisa yokusebenza futhi kwandise ukulahlekelwa.
Ngakho-ke, uma sikhuluma ngokuvamile, usayizi omncane we-conductor yangaphandle, uyanda imvamisa yokusebenza yesixhumi; i-dielectric constant constant ye-filling medium, iphakeme imvamisa yokusebenza futhi inciphisa ukulahlekelwa kokufaka.
Yiziphi izici ezithinta imvamisa yokusebenza?
Ifrikhwensi yokusebenza isho ububanzi befrikhwensi lapho isixhumi se-RF coaxial singadlulisela khona amasignali ngokuzinza nangempumelelo. Ayinqumi kuphela izinhlelo zokusebenza zezimboni lapho isixhumi esizifanelekela kodwa futhi ithinta ngokuqondile ikhwalithi yokudlulisela isignali, ukulahlekelwa, nokuzinza kwesistimu.
Imvamisa yokusebenza inqunywa yizici ezilandelayo: ukwakheka kwesakhiwo somzimba sesixhumi (njengosayizi, impahla ye-dielectric), amapharamitha okusebenza kagesi (VSWR, ukulahlekelwa kokufaka, njll.), inqubo yokukhiqiza nokunemba, njll.
Ezinhlelweni zezimboni, imvamisa yokusebenza iwukucatshangelwa okuyinhloko lapho ukhetha isixhumi. Ububanzi befrikhwensi obuncane bungase buholele ekusebenzeni kwesistimu okulinganiselwe, kuyilapho ifrikhwensi ephezulu kakhulu ingabangela ukubonakaliswa kwesignali kanye nokulahlekelwa okungeziwe.
Izimpawu zokuvama kanye nokusetshenziswa kwezixhumi ze-Coaxial
Lapha sikhetha izixhumi eziyi-12 ezivamile ze-coaxial futhi sinikeze incazelo emfushane yamafrikhwensi azo okusebenza nezici.
Isixhumi se-BNC
Izici: Ukuxhumeka kwe-Bayonet, kulula ukuyisebenzisa.
Izicelo: Imishini yokuhlola yezimboni, amasistimu okuqapha amavidiyo, ukudluliswa kwamasignali emishinini eyisisekelo ezenzakalelayo.
Izinzuzo: Isakhiwo esilula, izindleko eziphansi, ezifanele izindawo zezimboni ezimaphakathi neziphansi{0}}ezivamile.
Isixhumi se-TNC
Izici: Ukuxhumeka okunentambo, ukumelana nokudlidliza okungcono kune-BNC.
Izinhlelo zokusebenza: Amasistimu e-radar yezimboni, amasistimu okulawula kude, ukudluliswa kwesignali ezindaweni ezidlidlizayo.
Izinzuzo: Ukuzinza okungcono ezindaweni zokudlidliza kwezimboni, ezifanele{0}}izinhlelo zokusebenza ezinokwethenjelwa okuphezulu.
-thayipha Isixhumi
Izici: Uxhumano olunemicu, isakhiwo esiqinile, amandla okuphatha amandla aphezulu (cishe izikhathi ezi-3-4 kune-SMA). Izicelo: Imishini ye-microwave yezimboni, iziteshi zaphansi zesathelayithi, izinhlelo ze-radar, ukudluliswa komsakazo kanye nemishini yokwamukela.
Izinzuzo: Umthamo omkhulu wokubamba amandla, ulungele ukudluliswa kwesignali yamandla emboni{{0}yebanga eliphezulu{1}}.
Isixhumi se-SMA
Izici: Ukuxhumeka okunezintambo, umklamo omncane, amandla amahle wemishini.
Izicelo: Imishini yokuhlola yezimboni, amasekhethi e-microwave, amanethiwekhi ezinzwa zezimboni, amasistimu okulawula okuzenzakalelayo.
Izinzuzo: Ibhalansi usayizi nokusebenza, ukukhetha okujwayelekile ekuhlolweni kwemboni kanye nesilinganiso.
Isixhumi se-SMB
Izici: Phusha-ohlotsheni lokukhiya, usayizi omncane, isisindo esilula.
Izicelo: Imishini yezimboni eqinile, amasistimu okulawula ama-miniaturized, imishini yezimboni eshumekiwe.
Izinzuzo: Ukonga isikhala{0}}, kulungele{1}}izintambo eziphezulu zokuminyana ezinhlelweni zokulawula izimboni.
Isixhumi se-MCX
Izici: Phusha-ekuxhumekeni kwesakhiwo, usayizi ohlangene, ukuxhumana okulula nokusheshayo.
Izicelo: Imishini yokuhlola yezimboni, amasistimu okulawula okuzenzakalelayo, amanethiwekhi wezinzwa zezimboni.
Izinzuzo: Idizayini encane, ukusebenza okuhle kakhulu-kokudluliswa kwemvamisa, ukuqina okuhle kwemishini.
3.5MM Isixhumi
Ibanga Lemvamisa: DC~26.5GHZ
Izici: I-Air dielectric, ukulahleka kokubonisa okuphansi, ukunemba okuphezulu.
Izinhlelo zokusebenza:{0}}Ukuhlolwa kwesihlungi se-frequency ephezulu, i-millimeter{1}}i-wave front-ekugcineni, amasistimu e-radar yezimboni.
Izinzuzo: Ihlinzeka ngobuqotho besignali obuhle kakhulu-ekuhlolweni kwemboni okuvama kaningi.
2.92MM Isixhumi
Ibanga Lemvamisa: DC ~ 40GHZ
(Uhlobo lokunemba olufika ku-43.5GHZ)
Izici: Ihambisana ne-SMA, ukusebenza kahle kakhulu-kwemvamisa ephezulu.
Izinhlelo zokusebenza: Amasistimu e-radar yezimboni,{0}}impahla yokuxhumana yamafrikhwensi aphezulu, i-industrial millimeter{1}}ukuhlola amaza.
Izinzuzo: Ihlinzeka ngokusebenza okuzinzile kuzinhlelo zokusebenza zezimboni ezingaphansi kuka-40GHz.
2.4MM Isixhumi
Ibanga Lemvamisa: DC~50GHZ
Izici: Ukusekelwa kwemvamisa ephezulu, amandla aphezulu emishini.
Izinhlelo zokusebenza: Ucwaningo lwama-millimeter{0}}lwe-wave yemboni,{1}}amasistimu e-radar aphezulu, iziteshi zaphansi zokuxhumana ngesathelayithi.
Izinzuzo: Ihlangabezana nezidingo zemboni{{0}yezinhlelo zokusebenza zebanga eliphezulu{1}}zemvamisa ezingaphansi kuka-50GHz.
1.85MM Isixhumi
Ibanga Lemvamisa: DC~67GHZ
Izici: Usekelo{0}}eliphezulu kakhulu, ukukhiqizwa okunembayo.
Izinhlelo zokusebenza: Ucwaningo lwe-Industrial terahertz,{0}}ukuhlolwa kwedivayisi okuyimvamisa ephezulu, amasistimu e-radar athuthukile.
Izinzuzo: Isekela izinhlelo zokusebenza zezimboni-zezinga eliphezulu{1}}zemvamisa ngaphansi kuka-67GHz, ukuhlangabezana nezidingo-zocwaningo lwemboni oluphambili. 1.0mm Isixhumi
Ibanga Lemvamisa: DC~110GHz
Izici: Isekela i-millimeter wave namabhendi we-terahertz frequency.
Izinhlelo zokusebenza: Ucwaningo lwemboni oluphambili-,{1}}ukuhlolwa kwesekethe okuhlanganisiwe okuphezulu, amasistimu wokuthwebula we-industrial terahertz.
Izinzuzo: Ifanele imboni{{0}izinhlelo zokusebenza zebanga eliphezulu{1}}zemvamisa, ezimele phambili kobuchwepheshe besixhumi.
Isixhumi se-SMP
Ibanga Lemvamisa: DC~40GHz
Izici: Ukucindezela okungenantambo{0}}kuxhumano, usayizi omncane.
Izinhlelo zokusebenza: Ukufakwa okuminyene kwemojuli ye-Industrial T/R,{0}}amasistimu ezimboni aminyana kakhulu.
Izinzuzo: Ifanele-izintambo eziminyanisiwe ngaphakathi kwezisetshenziswa zemboni, ihlinzeka ngoxhumano oluzinzile{1}}lokuvela kwamaza.
Imininingwane Ebalulekile Yokukhetha Izixhumi ze-Coaxial
Ukufanisa Ibanga Lemvamisa
Qinisekisa ukuthi ububanzi befrikhwensi yesixhumi buhlanganisa izimfuneko zesistimu ukugwema ukuwohloka kwekhwalithi yesiginali ngenxa yemvamisa eyeqa umkhawulo.
I-VSWR kanye Nokulahlekelwa Kokufaka
Kuzinhlelo zokusebenza zezimboni, i-VSWR kufanele ilawulwe ngaphansi kuka-1.25 (izidingo eziphezulu{1}}zezinhlelo zokusebenza zemvamisa ephezulu), futhi ukulahleka kokufakwa kufanele kube phakathi kuka-0.1~0.5dB.
Ukuzinza Kwemishini
Izindawo zezimboni zivame ukuzwa ukudlidliza kanye noshintsho lokushisa; khetha izixhumi ezinamandla aphezulu emishini kanye nokumelana nokudlidliza okuhle.
Ukuzivumelanisa Nemvelo
Izicelo zezimboni zivame ukubhekana nezimo ezinzima; khetha izixhumi ezinezici ezingangeni manzi, ezingangenwa uthuli, nezici zokumelana nezinga lokushisa eliphezulu/eliphansi.
Ukufanisa Impedan
Amasistimu ezimboni ngokuvamile asebenzisa i-impedance evamile engu-50Ω; qinisekisa ukuhambisana nesistimu.
Indlela Yokuxhuma
Khetha izixhumi ezinochungechunge (N-uhlobo, i-SMA) noma cindezela-izixhumi (MCX, SMP) ngokusekelwe esikhaleni sokufaka kanye nemvamisa yokusebenza.