Ukukhethwa kweziqhagamshelo zeRF coaxial kufuneka kuthathelwe ingqalelo iimfuno zokusebenza kunye nemiba yezoqoqosho.Ukusebenza kufuneka kuhlangabezane neemfuno zenkqubo yezixhobo zombane.Ngokoqoqosho, kufuneka ihlangabezane neemfuno zobunjineli bexabiso.Ngokomgaqo, le miba mine ilandelayo kufuneka iqwalaselwe xa ukhetha izihlanganisi.Okulandelayo, makhe sijonge.
Isidibanisi se-BNC
(1) Ujongano lwesinxibelelanisi (i-SMA, i-SMB, i-BNC, njl.)
(2) Ukusebenza kombane, intambo kunye ne-cable assembly
(3) Ifomu yokuyeka (ibhodi yePC, intambo, iphaneli, njl.)
(4) Ubume boomatshini kunye nokwaleka (umkhosi kunye norhwebo)
1, Ujongano lwesidibanisi
I-interface yokudibanisa idla ngokugqitywa ngokusetyenziswa kwayo, kodwa kufuneka ihlangabezane neemfuno zokusebenza kombane kunye noomatshini ngexesha elifanayo.
Isidibanisi sodidi lwe-BMA sisetyenziselwa uqhagamshelo olungaboniyo lwenkqubo ye-microwave yamandla aphantsi ene-frequency ukuya kwi-18GHz.
Izixhumi ze-BNC zizidibaniso zohlobo lwe-bayonet, ezisetyenziswa kakhulu kuqhagamshelo lwe-RF kunye nee-frequencies ezingaphantsi kwe-4GHz, kwaye zisetyenziswa ngokubanzi kwiinkqubo zenethiwekhi, izixhobo kunye nemimandla yoqhagamshelwano lwekhompyutha.
Ngaphandle kwe-screw, i-interface ye-TNC ifana ne-BNC, enokusetyenziswa kwi-11GHz kwaye inomsebenzi obalaseleyo phantsi kweemeko zokungcangcazela.
Izihlanganisi ze-screw ze-SMA zisetyenziswa ngokubanzi kuphapho, irada, unxibelelwano lwe-microwave, unxibelelwano lwedijithali kunye namanye amasimi omkhosi kunye noluntu.I-impedance yayo yi-50 Ω.Xa usebenzisa intambo eguquguqukayo, i-frequency ingaphantsi kwe-12.4GHz.Xa usebenzisa i-semi-rigid cable, i-frequency ephezulu yi-26.5GHz.I-75 Ω inethemba elibanzi losetyenziso kunxibelelwano lwedijithali.
Umthamo we-SMB mncinci kunalowo we-SMA.Ukuze ufake i-self-locking isakhiwo kunye nokuququzelela uxhulumaniso olukhawulezayo, esona sicelo siqhelekileyo sinxibelelwano lwedijithali, oluthatha indawo ye-L9.I-50N yorhwebo idibana ne-4GHz, kwaye i-75 Ω isetyenziselwa i-2GHz.
I-SMC iyafana ne-SMB ngenxa yesikrufu sayo, esiqinisekisa ukusebenza koomatshini bomelele kunye noluhlu lwamaza obuninzi.Isetyenziswa ikakhulu emkhosini okanye kwindawo yokungcangcazela okuphezulu.
I-N-type screw connector isebenzisa umoya njengento yokugquma ngexabiso eliphantsi, i-impedance ye-50 Ω kunye ne-75 Ω, kunye nokuphindaphinda ukuya kwi-11 GHz.Ngokuqhelekileyo isetyenziselwa uthungelwano lwengingqi, ukuhanjiswa kweendaba kunye nezixhobo zokuvavanya.
I-MCX kunye ne-MMCX iziqhagamshelo ezibonelelwa yi-RFCN zincinci ngokobukhulu kwaye zithembekile kuqhagamshelwano.Ziyimveliso ezikhethwayo ukuhlangabezana neemfuno ezinzulu kunye ne-miniaturization, kwaye zinethemba elibanzi lesicelo.
2. Ukusebenza koMbane, intambo kunye nendibano yentambo
A. Impedance: Isidibanisi kufuneka sihambelane ne-impedance yenkqubo kunye nekhebula.Kufuneka kuqatshelwe ukuba ayizizo zonke iindawo ezidityanisiweyo ezidibana nokuphazamiseka kwe-50 Ω okanye 75 Ω, kwaye ukungahambelani kokuphazamiseka kuya kukhokelela ekuthotyweni kwenkqubo yokusebenza.
B. I-Voltage: qinisekisa ukuba ubuninzi bokumelana ne-voltage ye-connector ayinakugqithiswa ngexesha lokusetyenziswa.
C. Ubuninzi bezihlandlo zokusebenza: isinxibelelanisi ngasinye sinomlinganiselo ophezulu wokusebenza rhoqo, kunye noyilo oluthile lwezorhwebo okanye lwe-75n lunomlinganiselo omncinci wokusebenza.Ukongeza ekusebenzeni kombane, uhlobo ngalunye lwe-interface luneempawu zalo ezizodwa.Ngokomzekelo, i-BNC yi-bayonet uxhumano, olulula ukuyifaka kunye nexabiso eliphantsi kwaye lisetyenziswe ngokubanzi kwi-low-performance connection yombane;Uchungechunge lwe-SMA kunye ne-TNC zidibaniswe ngamantongomane, ukuhlangabezana neemfuno zendawo yokungcangcazela ephezulu kwizixhumi.I-SMB inomsebenzi woqhagamshelo olukhawulezayo kunye nokuqhawula, ngoko iya ithandwa ngakumbi kubasebenzisi.
D. Ikhebula: Ngenxa yokusebenza kwayo okuphantsi kokhuselo, intambo yeTV idla ngokusetyenziswa kwiinkqubo eziqwalasela kuphela i-impedance.Isicelo esiqhelekileyo yi-eriyali yeTV.
Intambo yeTV ebhetyebhetye luhlobo oluthile lwentambo yeTV.Ine-impedance eqhubekayo kunye nesiphumo esihle sokukhusela.Inokugotywa kwaye inexabiso eliphantsi.Isetyenziswa kakhulu kwishishini lekhompyuter, kodwa ayinakusetyenziswa kwiinkqubo ezifuna ukusebenza okuphezulu kokhuselo.
Iintambo eziguquguqukayo ezikhuselekileyo zisusa i-inductance kunye ne-capacitance, ezisetyenziswa kakhulu kwizixhobo kunye nezakhiwo.
Intambo ye-coaxial ethambileyo iye yaba yeyona ntambo iqhelekileyo yothumelo evaliweyo ngenxa yokusebenza kwayo okukhethekileyo.I-coaxial ithetha ukuba i-signal kunye ne-coaxial conductor ikwi-axis enye, kwaye i-coaxial yangaphandle yenziwe ngocingo olulukiweyo olulukiweyo, ngoko ikwabizwa ngokuba yi-braided coaxial cable.Le ntambo inefuthe elihle lokukhusela kwi-conductor ephakathi kunye nefuthe layo lokukhusela lixhomekeke kuhlobo locingo oluphothiweyo kunye nobukhulu be-braided layer.Ukongeza kwi-high voltage resistance, le ntambo ifanelekile ukusetyenziswa kwi-frequency ephezulu kunye nobushushu obuphezulu.
Iintambo ezilukiweyo ezilukiweyo zithatha indawo yomaleko ophothiweyo ngamaqokobhe e-tubular, enceda ngokufanelekileyo ukusilela kokungakhuseleki kakuhle kweentambo eziphothiweyo kumaza aphezulu.Iintambo eziqinileyo ziqhele ukusetyenziswa kwiifrikhwensi eziphezulu.
E. Indibano yekhebula: Kukho iindlela ezimbini eziphambili zofakelo lwesiqhagamshelo: (1) ukuwelda i-conductor ephakathi kunye ne-screwing the shielding layer.(2) I-Crimp i-conductor ephakathi kunye ne-shielding layer.Ezinye iindlela zithathwe kwezi ndlela zimbini zingasentla, ezifana nokuwelda i-conductor esembindini kunye ne-crimping umaleko okhuselayo.Indlela (1) isetyenziswe kwiimeko ngaphandle kwezixhobo ezikhethekileyo zokufakela;Ngenxa yokusebenza okuphezulu kunye nokusebenza okuthembekileyo kokupheliswa kwendlela yokuhlanganisa i-crimping, kunye noyilo lwesixhobo esikhethekileyo sokukhwabanisa kunokuqinisekisa ukuba inxalenye nganye ye-cable maggot idityanisiwe iyafana, kunye nokuphuhliswa kwesixhobo sokuhlanganisa esinexabiso eliphantsi, i-crimping shielding layer. yewelding center conductor iya kuthandwa kakhulu.
3. Ifomu yokuyeka
Iziqhagamshelo zingasetyenziselwa iintambo zeRF coaxial, iibhodi zesekethe eziprintiweyo kunye nolunye ujongano lonxibelelwano.Ukuziqhelanisa kubonakalise ukuba uhlobo oluthile lwesinxibelelanisi luhambelana nohlobo oluthile lwekhebula.Ngokubanzi, intambo enedayamitha encinci yangaphandle idityaniswe nezihlanganisi ezincinci ze-coaxial ezifana ne-SMA, i-SMB kunye ne-SMC.4. Ubume bomatshini kunye nokwaleka
Ulwakhiwo lwekhonkco luya kuchaphazela kakhulu ixabiso layo.Uyilo lwekhonkco nganye lubandakanya umgangatho womkhosi kunye nomgangatho worhwebo.Umgangatho womkhosi uvelisa zonke iindawo zobhedu, i-polytetrafluoroethylene insulation, kunye negolide yangaphakathi nangaphandle-iplating ngokwe-MIL-C-39012, kunye nokusebenza okuthembekileyo.Uyilo olukumgangatho wentengiso lusebenzisa izinto ezingabizi kakhulu ezinje ngobhedu, ukugqunywa kwepolypropylene, ukugquma ngesilivere, njl.
Izixhumi zenziwe ngobhedu, i-beryllium yobhedu kunye nensimbi engenasici.I-conductor esembindini ngokubanzi igqunywe ngegolide ngenxa yokunganyangeki kwayo okuphantsi, ukumelana nokugqwala kunye nokungangeni komoya okugqwesileyo.Umgangatho womkhosi ufuna igolide yokuhombisa kwi-SMA kunye ne-SMB, kunye nesilivere kwi-N, TNC kunye ne-BNC, kodwa abasebenzisi abaninzi bakhetha ukufaka i-nickel kuba isilivere kulula ukuyixuba.
Ii-insulators ezisetyenziswa ngokuqhelekileyo zibandakanya i-polytetrafluoroethylene, i-polypropylene kunye ne-polystyrene eqiniweyo, apho i-polytetrafluoroethylene ineyona ndlela isebenzayo yokugquma kodwa ixabiso eliphezulu lokuvelisa.
Izinto eziphathekayo kunye nesakhiwo sokudibanisa sichaphazela ubunzima bokucubungula kunye nokusebenza kakuhle kwekhonkco.Ke ngoko, abasebenzisi kufuneka bakhethe ngokufanelekileyo isinxibelelanisi esinentsebenzo engcono kunye nomlinganiselo wexabiso ngokwemeko yesicelo sabo.
Ixesha lokuposa: Feb-07-2023