Njengengxenye ebalulekile yezingxenye ze-passive, izixhumi ze-RF coaxial zinezici ezinhle zokudlulisa i-broadband nezindlela ezihlukahlukene zokuxhuma ezilula, ngakho-ke zisetshenziswa kakhulu kumathuluzi okuhlola, izinhlelo zezikhali, izinto zokuxhumana neminye imikhiqizo.Njengoba ukusetshenziswa kwezixhumi ze-RF coaxial sekungene cishe kuyo yonke imikhakha yomnotho wezwe, ukwethembeka kwayo nakho sekudonse ukunakwa okwengeziwe.Izindlela zokuhluleka kwezixhumi ze-coaxial ze-RF ziyahlaziywa.
Ngemva kokuba i-N-type Connector pair ixhunyiwe, indawo yokuxhumana (indiza yereferensi kagesi kanye nemishini) yomqhubi wangaphandle wepheya yesixhumi iqiniswa ngokumelene nomunye ngokucindezela kwentambo, ukuze kuzuzwe ukumelana okuncane kokuxhumana (< 5m Ω).Iphinikhodi ye-conductor kuphini ifakwa embobeni kakhondakta esokhethini, futhi ukuthintana kahle kukagesi (ukumelana nokuxhumana<3m Ω) kugcinwa phakathi kwamakhondakta amabili angaphakathi emlonyeni wekhondakta esokhethini ngokusebenzisa ukuqina kodonga lwesokhethi.Ngalesi sikhathi, indawo yesinyathelo somqhubi wephini kanye nobuso bokugcina bomqhubi ku-socket ayicindezelwe ngokuqinile, kodwa kunegebe elingu-<0.1mm, elinomthelela obalulekile ekusebenzeni kukagesi nokuthembeka isixhumi se-coaxial.Isimo sokuxhuma esifanelekile sepheya yesixhumi sohlobo lwe-N singafingqwa ngale ndlela elandelayo: ukuthintana okuhle komqhubi wangaphandle, ukuthintana okuhle komqhubi wangaphakathi, ukusekelwa okuhle kokusekelwa kwe-dielectric kumqhubi wangaphakathi, kanye nokudluliswa okulungile kwengcindezi yentambo.Uma isimo sokuxhuma esingenhla sishintsha, isixhumi sizohluleka.Ake siqale ngala maphuzu futhi sihlaziye isimiso sokuhluleka kwesixhumi ukuze sithole indlela efanele yokuthuthukisa ukuthembeka kwesixhumi.
1. Ukwehluleka okubangelwa ukuthintana kabi kukakhondatha wangaphandle
Ukuze kuqinisekiswe ukuqhubeka kwezakhiwo zikagesi nezemishini, amandla phakathi kwezindawo zokuthintana zamakhondakta angaphandle ngokuvamile makhulu.Thatha isixhumi sohlobo lwe-N njengesibonelo, lapho i-torque eqinisayo i-Mt yomkhono wesikulufu ingu-135N ojwayelekile.cm, ifomula Mt=KP0 × 10-3N.m (K iyi-coefficient ye-torque eqinisayo, kanye no-K=0.12 lapha), i-axial pressure P0 yekhondakta yangaphandle ingabalwa ibe ngu-712N.Uma amandla omqhubi wangaphandle engezinhle, angabangela ukuguga okukhulu kobuso bokuphela bokuxhuma bomqhubi wangaphandle, ngisho nokuguqulwa nokuwa.Isibonelo, ubukhulu bodonga lobuso bokugcina obuxhumayo bomqhubi wangaphandle wesiphetho sowesilisa sesixhumi se-SMA buncane kakhulu, bungu-0.25mm kuphela, futhi impahla esetshenziswayo ikakhulukazi ithusi, enamandla abuthakathaka, futhi i-torque yokuxhuma inkulu kancane. , ngakho-ke ubuso bokuphela bokuxhuma bungase bukhubazeke ngenxa yokukhishwa ngokweqile, okungase kulimaze umqhubi wangaphakathi noma ukwesekwa kwe-dielectric;Ukwengeza, ingaphezulu le-conductor yangaphandle yesixhumi kuvame ukumbozwa, futhi ukumbozwa kobuso bokuphela kokuxhuma kuzolimazwa amandla amakhulu okuxhumana, okuholela ekwandeni kokumelana nokuxhumana phakathi kwama-conductor angaphandle kanye nokwehla kwamandla kagesi. ukusebenza kwesixhumi.Ngaphezu kwalokho, uma isixhumi se-RF coaxial sisetshenziswa endaweni enokhahlo, ngemva kwesikhathi esithile, ungqimba lothuli luzofakwa ebusweni bokuphela bokuxhuma bomqhubi wangaphandle.Lolu ngqimba lothuli lubangela ukumelana nokuxhumana phakathi kwabaqhubi bangaphandle ukuba kwande kakhulu, ukulahlekelwa kokufakwa kwesixhumi kuyanda, futhi inkomba yokusebenza kagesi iyancipha.
Izinyathelo zokuthuthukisa: ukugwema ukuthintana okubi komqhubi wangaphandle okubangelwa ukuguqulwa noma ukugqoka ngokweqile kobuso bokuphela kokuxhuma, ngakolunye uhlangothi, singakhetha izinto ezinamandla aphezulu ukucubungula umqhubi wangaphandle, njengethusi noma insimbi engagqwali;Ngakolunye uhlangothi, ukushuba kodonga lobuso bokuphela kokuxhuma komqhubi wangaphandle kungabuye kwandiswe ukuze kwandiswe indawo yokuxhumana, ukuze ingcindezi endaweni yeyunithi yobuso bokuphela bokuxhuma bomqhubi wangaphandle izoncishiswa lapho okufanayo. i-torque yokuxhuma isetshenziswa.Isibonelo, isixhumi esithuthukisiwe se-SMA coaxial (i-SuperSMA ye-SOUTHSTEST Inkampani e-United States), ububanzi bangaphandle bosekelo lwaso olumaphakathi ngu-Φ 4.1mm buncishiswe baba ngu-Φ 3.9mm, ukujiya kodonga lwendawo exhumayo yekhondatha yangaphandle kuyanda ngokuhambisanayo. kuya ku-0.35mm, futhi amandla emishini ayathuthukiswa, ngaleyo ndlela athuthukise ukwethembeka koxhumano.Lapho ugcina futhi usebenzisa isixhumi, gcina isiphetho sokuxhuma sekhondatha yangaphandle sihlanzekile.Uma kunothuli kuyo, sula ngebhola likakotini lika-alcohol.Kumele kuqashelwe ukuthi utshwala akufanele bucwiliswe ekusekelweni kwabezindaba ngesikhathi sokukhuhla, futhi isixhumi akufanele sisetshenziswe kuze kube yilapho utshwala buye buvuvukala, ngaphandle kwalokho ukuvinjelwa kwesixhumi kuzoshintsha ngenxa yokuxutshwa kotshwala.
2. Ukwehluleka okubangelwa ukuthintana kabi komqhubi wangaphakathi
Uma kuqhathaniswa nomqhubi wangaphandle, umqhubi wangaphakathi onobukhulu obuncane namandla ampofu angase abangele ukuthintana okungalungile futhi aholele ekuhlulekeni kwesixhumi.Uxhumano lwe-elastic luvame ukusetshenziswa phakathi kwama-conductor angaphakathi, njengokuxhuma kwe-socket slotted nokunwebeka, uxhumano olunwebekayo lwe-spring claw, uxhumano lwe-elastic, njll. Phakathi kwazo, uxhumano lwe-socket-slot nokunwebeka lunesakhiwo esilula, izindleko eziphansi zokucubungula, ukuhlanganiswa okulula kanye nesicelo esibanzi kakhulu. ububanzi.
Izinyathelo zokuthuthukisa: Singasebenzisa amandla okufaka namandla okugcina ephinikhodi yegeji ejwayelekile kanye nekhondakta esokhethi ukuze silinganise ukuthi ukufanisa phakathi kwesokhethi nephinikhodi kunengqondo yini.Ezixhunyweni zohlobo lwe-N, ububanzi Φ 1.6760+0.005 Amandla okufaka lapho iphinikhodi yegeji evamile ifaniswe nojeke kufanele ibe ≤ 9N, kuyilapho ububanzi Φ 1.6000-0.005 iphinikhodi yegeji evamile kanye nekhondatha esokhethini izoba namandla okugcina ≥ 0.56N.Ngakho-ke, singathatha amandla okufaka namandla okugcina njengezinga lokuhlola.Ngokulungisa usayizi nokubekezelelana kwesokhethi kanye nephinikhodi, kanye nenqubo yokwelapha yokuguga ye-conductor esokhethi, amandla okufaka kanye namandla okugcina phakathi kwephini kanye nesokhethi kusebangeni elifanele.
3. Ukwehluleka okubangelwa ukwehluleka kokusekelwa kwe-dielectric ukusekela kahle umqhubi wangaphakathi
Njengengxenye ebalulekile yesixhumi se-coaxial, ukwesekwa kwe-dielectric kudlala indima ebalulekile ekusekeleni umqhubi wangaphakathi nokuqinisekisa ubuhlobo besikhundla esihlobene phakathi kwabaqhubi bangaphakathi nabangaphandle.Amandla emishini, i-coefficient yokwandisa ukushisa okushisayo, i-dielectric engaguquki, isici sokulahlekelwa, ukumuncwa kwamanzi nezinye izici zezinto zinomthelela obalulekile ekusebenzeni kwesixhumi.Amandla anele emishini iyisidingo esiyisisekelo sosekelo lwe-dielectric.Ngesikhathi sokusebenzisa isixhumi, ukusekelwa kwe-dielectric kufanele kuthwale ingcindezi ye-axial evela kumqhubi wangaphakathi.Uma amandla omshini wokusekela kwe-dielectric empofu kakhulu, kuzodala ukuguqulwa noma ngisho nokulimala ngesikhathi sokuxhuma;Uma i-thermal expansion coefficient yezinto ezibonakalayo inkulu kakhulu, lapho izinga lokushisa lishintsha kakhulu, i-dielectric support ingase ikhule noma inciphe ngokweqile, kubangele ukuba i-conductor yangaphakathi ixege, iwe, noma ibe ne-eksisi ehlukile kune-conductor yangaphandle, futhi kubangele ukuthuthumela kwe-coefficient yangaphakathi. usayizi wembobo yesixhumi ozoshintshwa.Nokho, ukumuncwa kwamanzi, ukungaguquguquki kwe-dielectric kanye nesici sokulahlekelwa kuthinta ukusebenza kukagesi kwezixhumi njengokulahlekelwa kokufaka kanye ne-reflection coefficient.
Izinyathelo zokuthuthukisa: khetha izinto ezifanele zokucubungula ukwesekwa okuphakathi ngokuya nezici zenhlanganisela yezinto njengendawo yokusetshenziswa kanye nobubanzi bemvamisa yokusebenza yesixhumi.
4. Ukwehluleka okubangelwa ukungezwani kwentambo okungadluliswanga ku-conductor wangaphandle
Indlela evame kakhulu yalokhu kwehluleka ukuwa komkhono wesikulufu, okubangelwa ngokuyinhloko ukuklama okungenangqondo noma ukucutshungulwa kwesakhiwo semikhono yesikulufu kanye nokunwebeka okungekuhle kweringi ye-snap.
4.1 Idizayini engenangqondo noma ukucutshungulwa kwesakhiwo semikhono yesikulufa
4.1.1 Idizayini yesakhiwo noma ukucutshungulwa kwegroove yesikulufu se-snap ring groove akunangqondo
(1) I-snap ring groove ijule kakhulu noma ayishoni kakhulu;
(2) I-engeli engacacile phansi komsele;
(3) I-chamfer inkulu kakhulu.
4.1.2 Ubukhulu bodonga lwe-axial noma lwe-radial lwe-screw sleeve snap ring groove mncane kakhulu
4.2 Ukunwebeka okungekuhle kwe-snap ring
4.2.1 Idizayini yokuqina kweradial ye-snap ring ayinangqondo
4.2.2 Ukuqiniswa kokuguga okungenangqondo kwe-snap ring
4.2.3 Ukukhethwa kwempahla okungafanele kwe-snap ring
4.2.4 I-chamfer yesiyingi yangaphandle ye-snap ring inkulu kakhulu.Leli fomu lokwehluleka lichazwe ezihlokweni eziningi
Ukuthatha isixhumi se-coaxial sohlobo lwe-N njengesibonelo, kuhlaziywa izindlela ezimbalwa zokwehluleka kwesixhumi esixhunywe ngesikulufu se-RF coaxial esisetshenziswa kakhulu.Izindlela zokuxhuma ezihlukene zizoholela ezindleleni ezihlukene zokuhluleka.Kuphela ngokuhlaziywa okujulile kwendlela ehambisanayo yemodi yokwehluleka ngakunye, kungenzeka ukuthola indlela ethuthukisiwe yokuthuthukisa ukwethembeka kwayo, bese uthuthukisa ukuthuthukiswa kwezixhumi ze-RF coaxial.
Isikhathi sokuthumela: Feb-05-2023