I-coaxial switch iyi-passive electromechanical relay esetshenziselwa ukushintsha amasignali e-RF ukusuka kwesinye isiteshi ukuya kwesinye.Lawa maswishi asetshenziswa kakhulu ezimeni zomzila wesignali ezidinga imvamisa ephezulu, amandla aphezulu kanye nokusebenza okuphezulu kwe-RF.Ibuye isetshenziswe kaningi ezinhlelweni zokuhlola ze-RF, njengezimpondo, ezokuxhumana ngesathelayithi, ezokuxhumana, iziteshi eziyisisekelo, ama-avionics, noma ezinye izinhlelo zokusebenza ezidinga ukushintsha amasignali e-RF ukusuka komunye umkhawulo kuya komunye.
Shintsha imbobo
Uma sikhuluma ngokushintsha kwe-coaxial, sivame ukuthi i-nPmT, okungukuthi, i-n pole m throw, lapho u-n eyinombolo yezimbobo zokufaka kanye no-m inombolo yezimbobo zokuphuma.Isibonelo, i-RF switch enembobo yokufaka eyodwa kanye nezimbobo zokuphuma ezimbili ibizwa nge-SPDT/1P2T.Uma iswishi ye-RF inokufaka okukodwa kanye nokuphumayo okungu-14, sidinga ukukhetha ukushintshwa kwe-RF kwe-SP14T.
Shintsha amapharamitha nezici
Uma isignali idinga ukushintshwa phakathi kweziphetho ezimbili zezinti, singakwazi ngokushesha ukukhetha i-SPDT.Nakuba ububanzi bokukhetha buncishisiwe ku-SPDT, sisadinga ukubhekana namapharamitha amaningi ajwayelekile anikezwa abakhiqizi.Kudingeka sifunde ngokucophelela le mingcele nezici, njenge-VSWR, i-Ins.Ukulahlekelwa, ukuhlukaniswa, imvamisa, uhlobo lwesixhumi, umthamo wamandla, i-voltage, uhlobo lokuqalisa, i-terminal, inkomba, isifunda sokulawula kanye nezinye imingcele ozikhethela yona.
Imvamisa nohlobo lwesixhumi
Kudingeka sinqume ububanzi befrikhwensi yesistimu bese sikhetha iswishi ye-coaxial efanele ngokuya ngobuningi.Imvamisa yokusebenza ephezulu yokushintshwa kwe-coaxial ingafinyelela ku-67GHz, futhi uchungechunge oluhlukile lokushintshwa kwe-coaxial lunamaza okusebenza ahlukene.Ngokuvamile, singahlulela imvamisa yokusebenza ye-coaxial switch ngokusho kohlobo lwesixhumi, noma uhlobo lwesixhumi lunquma ububanzi bemvamisa ye-coaxial switch.
Ngesimo sohlelo lokusebenza esingu-40GHz, kufanele sikhethe isixhumi esingu-2.92mm.Izixhumi ze-SMA zisetshenziswa kakhulu kububanzi befrikhwensi ngaphakathi kuka-26.5GHz.Ezinye izixhumi ezivame ukusetshenziswa, njenge-N-head ne-TNC, zingasebenza ku-12.4GHz.Okokugcina, isixhumi se-BNC singasebenza kuphela ku-4GHz.
DC-6/8/12.4/18/26.5 GHz: Isixhumi se-SMA
DC-40/43.5 GHz: 2.92mm isixhumi
DC-50/53/67 GHz: 1.85mm isixhumi
Umthamo wamandla
Kuhlelo lwethu lokusebenza nasekukhetheni idivayisi, umthamo wamandla ngokuvamile uyipharamitha eyinhloko.Ukuthi iswishi ingamelana namandla angakanani ngokuvamile kunqunywa ukwakheka kwemishini yeswishi, izinto ezisetshenziswayo, kanye nohlobo lwesixhumi.Ezinye izici futhi zikhawulela umthamo wamandla weswishi, njengefrikhwensi, izinga lokushisa lokusebenza nokuphakama.
Amandla kagesi
Sesiyazi kakade iningi lamapharamitha angukhiye we-coaxial switch, futhi ukukhethwa kwamapharamitha alandelayo kuncike ngokuphelele ekuthandeni komsebenzisi.
Iswishi ye-coaxial iqukethe ikhoyili nozibuthe kagesi, edinga amandla kagesi e-DC ukuze ishayele iswishi endleleni ye-RF ehambisanayo.Izinhlobo zama-voltage ezisetshenziselwa ukuqhathanisa i-coaxial switch zimi kanje:
Ibanga le-voltage yekhoyili
5VDC 4-6VDC
12VDC 13-17VDC
24VDC 20-28VDC
28VDC 24-32VDC
Uhlobo LweDrayivu
Ku-switch, umshayeli uyithuluzi ele-electromechanical elishintsha izindawo zokuxhumana ze-RF ukusuka endaweni eyodwa ukuya kwenye.Kumaswishi amaningi e-RF, ivalvu ye-solenoid isetshenziswa ukuze kusebenze ukuxhumana kwemishini kothintana naye we-RF.Uma sikhetha iswishi, ngokuvamile sibhekana nezinhlobo ezine ezihlukene zamadrayivu.
I-Failsafe
Uma kungekho voltage yokulawula yangaphandle esetshenziswayo, isiteshi esisodwa sihlala sivuliwe.Engeza ugesi wangaphandle bese ushintshela ekukhetheni isiteshi esihambisanayo;Lapho i-voltage yangaphandle inyamalala, iswishi izoshintshela ngokuzenzakalelayo esiteshini esivame ukuqhutshwa.Ngakho-ke, kuyadingeka ukunikeza ngokuqhubekayo amandla kagesi e-DC ukuze kugcinwe iswishi ishintshelwe kwezinye izimbobo.
I-Latching
Uma iswishi yokuxhuma idinga ukugcina isimo sayo sokushintsha, idinga ukujova amandla amanje ngokuqhubekayo kuze kusetshenziswe iswishi ye-voltage ye-DC ukuze kushintshwe isimo samanje sokushintshwa.Ngakho-ke, idrayivu ye-Place Latching ingahlala isesimweni sokugcina ngemva kokunyamalala kukagesi.
I-Latching Self Cut-off
Iswishi idinga okwamanje kuphela phakathi nenqubo yokushintsha.Ngemuva kokuthi ukushintsha sekuqediwe, kuba khona ukuvala okuzenzakalelayo ngaphakathi kweswishi.Ngalesi sikhathi, iswishi ayinakho okwamanje.Okusho ukuthi, inqubo yokushintsha idinga i-voltage yangaphandle.Ngemuva kokuthi ukusebenza kuzinzile (okungenani ama-50ms), susa i-voltage yangaphandle, futhi inkinobho izohlala esiteshini esishiwo futhi ngeke ishintshele esiteshini sokuqala.
Ngokujwayelekile Vula
Le modi yokusebenza ye-SPNT isebenza kuphela.Ngaphandle kwe-voltage yokulawula, zonke iziteshi zokushintsha azihambisani;Engeza ugesi wangaphandle bese ushintsha ukuze ukhethe isiteshi esishiwo;Uma i-voltage yangaphandle incane, iswishi ibuyela esimweni sokuthi zonke iziteshi azihambi.
Umehluko phakathi kwe-Latching ne-Failsafe
Amandla okulawula i-Failsafe ayasuswa, futhi iswishi ishintshelwa esiteshini esivalekile esivalekile;I-voltage yokulawula i-Latching iyasuswa futhi ihlale esiteshini esikhethiwe.
Uma kwenzeka iphutha futhi amandla e-RF enyamalala, futhi iswishi idinga ukukhethwa esiteshini esithile, ukushintshwa kwe-Failsafe kungacatshangelwa.Le modi ingabuye ikhethwe uma isiteshi esisodwa sisetshenziswa ngokujwayelekile kanti esinye isiteshi asisetshenziswanga ngendlela efanayo, ngoba lapho ukhetha isiteshi esivamile, ukushintshwa akudingi ukuhlinzeka nge-voltage yedrayivu kanye namanje, okungathuthukisa ukusebenza kahle kwamandla.
Isikhathi sokuthumela: Dec-03-2022