Njengoko sonke sisazi, intambo ye-coaxial ngumgca wokuhanjiswa kwe-broadband kunye nelahleko ephantsi kunye nokuhlukaniswa okuphezulu.Intambo ye-coaxial iqukethe ii-concentric cylindrical conductors ezihlulwe yi-dielectric gaskets.I-Capacitance kunye ne-inductance esasazwa kunye nomgca we-coaxial iya kuvelisa i-impedance esasazwayo kwisakhiwo sonke, oko kukuthi i-impedance yeempawu.
Ilahleko yokumelana nentambo ye-coaxial yenza ilahleko kunye nokuziphatha ecaleni kwentambo kuqikelelwe.Ngaphantsi kwempembelelo edibeneyo yezi zinto, ilahleko yentambo ye-coaxial xa uhambisa amandla e-electromagnetic (EM) ingaphantsi kakhulu kune-antenna kwindawo ekhululekile, kwaye ukuphazamiseka kuncinci.
(1) Ulwakhiwo
Iimveliso zentambo ye-coaxial zinomaleko okhuselayo wangaphandle.Ezinye iileyile zezinto eziphathekayo zingasetyenziselwa ngaphandle kwentambo ye-coaxial ukuphucula ukusebenza kokusingqongileyo, i-EM yokukhusela amandla kunye nokuguquguquka.Intambo ye-coaxial inokwenziwa ngocingo oluphothiweyo lwe-coaxial, kwaye yakhiwe ngobuchule, eyenza ukuba intambo ibe bhetyebhetye kwaye iphinde ilungiswe, ilula kwaye yomelele.Ngethuba nje i-cylindrical conductor ye-coaxial cable igcina i-concentricity, ukugoba kunye nokuphambuka akuyi kuchaphazela kakhulu ukusebenza kwentambo.Ke ngoko, iintambo ze-coaxial zihlala ziqhagamshelwe kwizihlanganisi ze-coaxial zisebenzisa iindlela zohlobo lwe-screw.Sebenzisa i-torque wrench ukulawula ukuqina.
2） Umgaqo wokusebenza
Imigca yeCoaxial ineempawu ezibalulekileyo ezinxulumene namaza, ezichaza ubunzulu bolusu obunokubakho kunye nokunqunyulwa rhoqo.Ubunzulu besikhumba buchaza isenzeko seempawu zefrikhwensi ephezulu esasaza kumgca we-coaxial.Okukhona i-frequency iphezulu, kokukhona ii-elektroni zithande ukuhambela kumphezulu womqhubi womgca we-coaxial.Isiphumo solusu sikhokelela ekwandeni kokuthomalalisa kunye nokufudumeza kwe-dielectric, okwenza ilahleko yokumelana nomgca we-coaxial inkulu.Ukuze unciphise ilahleko ebangelwa yimpembelelo yesikhumba, ikhebula le-coaxial elinobubanzi obukhulu lingasetyenziswa.
Ngokucacileyo, ukuphucula ukusebenza kwentambo ye-coaxial sisisombululo esinomtsalane ngakumbi, kodwa ukwandisa ubungakanani bentambo ye-coaxial kuya kunciphisa ubuninzi befrikhwensi enokuthi idluliselwe yintambo ye-coaxial.Xa i-wavelength yamandla e-EM idlula imowudi ye-electromagnetic (TEM) enqamlezayo kwaye iqala "ukugxumeka" ecaleni komgca we-coaxial ukuya kwindlela yombane ye-11 (TE11), i-cable coaxial cut-off frequency iya kuveliswa.Le mowudi entsha yefrikhwensi izisa iingxaki ezithile.Ekubeni imowudi entsha yefrikhwensi isasazeka ngesantya esahlukileyo kwimodi ye-TEM, iya kubonakalisa kwaye iphazamise isignali yemowudi ye-TEM ehanjiswa ngentambo ye-coaxial.
Ukusombulula le ngxaki, kufuneka sinciphise ubungakanani bekhebula le-coaxial kwaye sandise i-frequency cut-off frequency.Kukho iintambo ze-coaxial kunye nezixhumi ze-coaxial ezinokufikelela kwi-millimeter wave frequency - 1.85mm kunye ne-1mm coaxial connectors.Kuyafaneleka ukuba uqaphele ukuba ukunciphisa ubungakanani bomzimba ukuziqhelanisa nee-frequencies eziphezulu kuya kwandisa ilahleko yentambo ye-coaxial kunye nokunciphisa amandla okusebenza kwamandla.Omnye umngeni ekwenzeni la macandelo amancinci kukulawula ngokungqongqo ukunyamezela koomatshini ukunciphisa iziphene ezibalulekileyo zombane kunye nokutshintsha kwe-impedance ecaleni komgca.Kwiintambo ezinovakalelo oluphezulu, kuya kuxabisa ngaphezulu ukuphumeza oku.
Ixesha lokuposa: Jan-05-2023