Cholumikizira cha SMA ndi cholumikizira chomwe chimagwiritsidwa ntchito kwambiri ndi semi precision subminiature RF ndi cholumikizira cha microwave, makamaka choyenera kulumikizidwa kwa RF mumagetsi amagetsi okhala ndi ma frequency mpaka 18 GHz kapena kupitilira apo.Zolumikizira za SMA zili ndi mitundu yambiri, yachimuna, yachikazi, yowongoka, yolondola, zolumikizira za diaphragm, ndi zina zambiri, zomwe zimatha kukwaniritsa zofunikira zambiri.Kukula kwake kocheperako kumalolanso kugwiritsidwa ntchito, ngakhale pazida zazing'ono zamagetsi.
1, Chiyambi cha cholumikizira cha SMA
SMA nthawi zambiri imagwiritsidwa ntchito popereka kulumikizana kwa RF pakati pa matabwa ozungulira.Zigawo zambiri za microwave zimaphatikizapo zosefera, zowongolera, zosakaniza ndi oscillator.Cholumikizira chimakhala ndi mawonekedwe olumikizira akunja, omwe ali ndi mawonekedwe a hexagon ndipo amatha kumangika ndi wrench.Amatha kumangirizidwa kumangiridwe olondola pogwiritsa ntchito wrench yapadera ya torque, kuti kulumikizana kwabwino kutheke popanda kulimbitsa.
Cholumikizira choyamba cha SMA chinapangidwira 141 semi-rigid coaxial chingwe.Chojambulira choyambirira cha SMA chikhoza kutchedwa cholumikizira chaching'ono kwambiri, chifukwa pakati pa chingwe cha coaxial chimapanga pini yapakati pa kugwirizana, ndipo palibe chifukwa chosinthira pakati pa coaxial center conductor ndi pini yapakati ya cholumikizira chapadera.
Ubwino wake ndikuti chingwe cha dielectric chimalumikizidwa mwachindunji ndi mawonekedwe opanda mpweya, ndipo choyipa chake ndikuti kuchuluka kochepa kolumikizana / kulumikizidwa kumatha kuchitika.Komabe, pazogwiritsa ntchito zingwe zolimba zolimba, izi sizingakhale vuto, chifukwa kuyikako nthawi zambiri kumakhazikika pambuyo pa msonkhano woyamba.
2. Magwiridwe a SMA cholumikizira
Chojambulira cha SMA chapangidwa kuti chikhale ndi cholepheretsa cha 50 ohms pa cholumikizira.Zolumikizira za SMA zidapangidwa poyambirira ndikusankhidwa kuti zizigwira ntchito mpaka 18 GHz, ngakhale mitundu ina imakhala ndi ma frequency apamwamba a 12.4 GHz ndipo mitundu ina idasankhidwa kukhala 24 kapena 26.5 GHz.Malire okwera apamwamba angafunike kugwira ntchito ndi kutayika kwakukulu kobwerera.
Nthawi zambiri, zolumikizira za SMA zimakhala ndi mawonekedwe apamwamba kuposa zolumikizira zina mpaka 24 GHz.Izi ndichifukwa chazovuta kukonza bwino chithandizo cha dielectric, koma ngakhale kuli kovuta, opanga ena atha kuthana ndi vutoli moyenera ndipo amatha kusankha zolumikizira zawo za 26.5GHz.
Kwa zingwe zosinthika, malire afupipafupi nthawi zambiri amatsimikiziridwa ndi chingwe osati cholumikizira.Izi ndichifukwa choti zolumikizira za SMA zimavomereza zingwe zazing'ono kwambiri, ndipo zotayika zake mwachilengedwe zimakhala zazikulu kwambiri kuposa zolumikizira, makamaka pafupipafupi zomwe angagwiritse ntchito.
3, Mphamvu yovotera ya cholumikizira cha SMA
Nthawi zina, kuwerengera kwa cholumikizira cha SMA kungakhale kofunikira.Chofunikira chodziwikiratu kuchuluka kwa mphamvu yogwirira ntchito ya cholumikizira shaft yokwerera ndikuti imatha kufalitsa kuchuluka kwamagetsi ndikupangitsa kutentha kumakwera pang'ono.
Kutentha kotentha kumayambitsidwa makamaka ndi kukana kukhudzana, komwe kumakhala ntchito ya malo okhudzana ndi malo okhudzana ndi momwe mapepala olumikizirana amakhalira pamodzi.Malo ofunika kwambiri ndi kukhudzana kwapakati, komwe kumayenera kupangidwa bwino ndikugwirizana bwino.Tiyeneranso kukumbukira kuti mphamvu yowerengera mphamvu imachepa pafupipafupi chifukwa kukana kutayika kumawonjezeka pafupipafupi.
Zomwe zimagwiritsidwa ntchito pamagetsi a SMA zolumikizira zimasiyana kwambiri pakati pa opanga, koma ziwerengero zina zikuwonetsa kuti ena amatha kukonza ma Watts 500 pa 1GHz ndikutsika mpaka kuchepera pang'ono ma Watts 200 pa 10GHz.Komabe, izi ndizomwe zimayesedwanso, zomwe zingakhale zapamwamba kwambiri.
Pakuti SMA microstrip cholumikizira ali mitundu inayi: detachable mtundu, zitsulo TTW mtundu, Medium TTW mtundu, mwachindunji kulumikiza mtundu.Chonde dinani:https://www.dbdesignmw.com/microstrip-connector-selection-table/kusankha yogula.
Nthawi yotumiza: Dec-30-2022