I-RF coaxial connector iyingxenye yesixhumi se-elekthronikhi kanye nenkundla eshisayo.Okulandelayo, onjiniyela baseCankemeng bazokwenza isingeniso esichwepheshile kulwazi lwesixhumi se-RF coaxial.
Uhlolojikelele lwezixhumi ze-RF coaxial:
Izixhumi ezingama-coaxial, (Abanye abantu baphinde bayibize ngesixhumi se-RF noma isixhumi se-RF. Eqinisweni, isixhumi se-RF asifani ncamashi nesixhumi esiyi-coaxial. Isixhumi se-RF sihlukaniswa ngokombono wemvamisa yokusetshenziswa kwesixhumi, kuyilapho isixhumi esiyi-coaxial sihlukaniswa Ukwakheka kwesixhumi Ezinye izixhumi azikho ngempela i-coaxial, kodwa futhi zisetshenziswa emkhakheni we-RF, futhi isixhumi se-coaxial singasetshenziswa kumafrikhwensi aphansi, ngokwesibonelo, ipulaki ye-headphone evamile kakhulu, Imvamisa ngeke idlule i-3MHz umbono wendabuko, i-RF isho isigaba se-MHz Ezinsukwini zamanje, izixhumi ze-coaxial zivame ukusetshenziswa endaweni ye-microwave Esigabeni se-GHz, igama elithi "RF" lisetshenziswe ngaso sonke isikhathi futhi lihambisana negama elithi "microwave"). okuyigatsha lezixhumi.Kukhona ukufana nomehluko phakathi kwezixhumi.Izixhumi ezingama-coaxial zinama-conductor angaphakathi nama-conductor angaphandle.I-conductor yangaphakathi isetshenziselwa ukuxhuma ulayini wesignali.I-conductor yangaphandle ayiyona nje intambo yaphansi yomugqa wesiginali (ekhonjiswe endaweni engaphakathi yomqhubi wangaphandle), kodwa futhi idlala indima yokuvikela inkambu ye-electromagnetic (ukuvikela ukuphazamiseka kwamagagasi kagesi angaphakathi kuya ngaphandle ngokusebenzisa ingaphakathi. ingaphezulu lekhondakta yangaphandle, nokuvikela ukuthikamezeka kwenkambu yangaphandle kazibuthe kagesi ngaphakathi ngokusebenzisa indawo engaphandle yekhondatha yangaphandle), Lesi sici sinikeza isixhumi se-coaxial isikhala esikhulu kanye nezinzuzo zesakhiwo.Ubuso obungaphandle bomhlahlandlela wangaphakathi kanye nendawo yangaphakathi yomhlahlandlela wangaphandle wesixhumi se-coaxial ngokuyisisekelo yizindawo ze-cylindrical - ezimweni ezikhethekile, zivame ukudingeka ukuze kulungiswe imishini futhi zibe ne-axis evamile, ngakho zibizwa ngokuthi izixhumi ze-coaxial.Phakathi kwezinhlobo eziningana zemigqa yokudlulisela, intambo ye-coaxial isetshenziswa kabanzi ngenxa yezinzuzo zayo ezivelele (isakhiwo esilula, ukusetshenziswa kwendawo ephezulu, ukukhiqiza okulula, ukusebenza okuphezulu kokudlulisa ...), okuholela esidingweni sokuxhuma intambo ye-coaxial, kanye nesixhumi se-coaxial sisetshenziswa.Ngenxa yezinzuzo zesakhiwo se-coaxial, ukuqhubeka kwesici se-impedance ye-(coaxial) isixhumi (uma kuqhathaniswa nezinye izixhumi) kuqinisekiswa kalula, ukuphazamiseka kokudlulisela kanye nokuphazamiseka (EMI) kuphansi kakhulu, futhi ukulahlekelwa kokudlulisela kuncane, ngakho-ke cishe isetshenziswa ngokukhethekile kumafrikhwensi omsakazo nasezinkundleni zemicrowave.Ngenxa yokuthi cishe isetshenziswa ngokuphelele emazingeni aphezulu, ezinye izidingo zokusebenza zikagesi zihlukile kwezinye izixhumi
Inkomba yokusebenza yesixhumi se-RF coaxial
Ukusebenza kukagesi kwesixhumi se-coaxial se-RF kufanele kufane nokunwetshwa kwentambo ye-coaxial ye-RF, noma umthelela kusiginali edluliswayo kufanele uncishiswe lapho isixhumi se-coaxial sixhunywe nekhebuli yamakhoaxial.Ngakho-ke, isici se-impedance kanye ne-voltage stand wave ratio yizinkomba ezibalulekile zesixhumi se-RF coaxial.Isici sokuvimbela isixhumi sinquma uhlobo lwentambo exhunywe nalo I-voltage stand wave ratio ibonisa izinga elifanayo lesixhumi.
A. I-impedance yesici: isici esingokwemvelo solayini wokudlulisa onqunywa amandla kanye nokungena kolayini wokudlulisela, okubonisa ukusatshalaliswa kwezinkundla zikagesi nezizibuthe entanjeni yokudlulisela.Uma nje i-medium yomugqa wokudlulisela ifana, i-impedance yesici ihlala njalo.Ngesikhathi sokudluliswa kwamagagasi, i-E/H ayishintshi.Ulayini wokudlulisela ngokwawo unquma ukuvinjelwa kwesici sawo, futhi i-impedance yesici iyafana yonke indawo kulayini wokudlulisela.Ezintamboni ze-coaxial noma izixhumi ze-coaxial, i-impedance yesici inqunywa ububanzi bangaphakathi bomqhubi wangaphandle, ububanzi bangaphandle bomqhubi wangaphakathi kanye ne-dielectric constant of the medium phakathi kwama-conductor angaphakathi nangaphandle.Kukhona ubudlelwano obulandelayo bobuningi.
B. I-reflection coefficient: isilinganiso se-voltage ebonisiwe ku-voltage yokufaka.Lapho inani liphakeme, amandla angaboniswa kancane, ngcono ukufanisa, ukusondelana kwesici, futhi kuba ngcono ukuqhubeka
C. Isilinganiso segagasi lokuma kwamandla kagesi: kuzoba nezinhlobo ezimbili zamagagasi asakazeka emugqeni wokudlulisela ongafani, enye igagasi lesigameko kanti enye igagasi elibonisiwe.Kwezinye izindawo, izinhlobo ezimbili zamagagasi zibekwe phezulu.Amagagasi aphakeme awasabalalisi emgqeni wokudlulisela, kodwa ayama.Ngamanye amazwi, kuhlale kune-voltage ephezulu noma encane kunoma iyiphi indiza eyireferensi.Amagagasi anjalo abizwa ngokuthi amagagasi amile.I-VSWR isilinganiso sesamba se-voltage yokufaka kanye ne-voltage ebonisiwe kumahluko phakathi kwe-voltage yokufaka kanye ne-voltage ebonisiwe.Leli nani likhulu noma lilingana no-1, elincanyana lingcono, futhi linobudlelwano bomthamo ne-coefficient yokubonisa.
Isikhathi sokuthumela: Feb-18-2023