Tambo yeCoaxial inoshandiswa kuendesa simba reRF kubva kune imwe port kana chikamu kuenda kune dzimwe ports/zvikamu zvesystem. Tambo yeCoaxial inoshandiswa se microwave coaxial line. Iyi fomu yewaya inowanzova nema conductor maviri akaita se cylindrical akatenderedza common axis. Dzese dzakaparadzaniswa nezvinhu zve dielectric. Pama frequency akaderera, fomu ye polyethylene inoshandiswa se dielectric, uye pa frequency yakakwira Teflon inoshandiswa.
Rudzi rwetambo ye coaxial
Kune mhando dzakawanda dzetambo dzecoaxial zvichienderana nekugadzirwa kweconductor uye nzira dzekudzivirira dzinoshandiswa. Mhando dzetambo dzecoaxial dzinosanganisira tambo dzecoaxial dzakajairwa sezvakatsanangurwa pamusoro apa pamwe netambo dzecoaxial dzakazadzwa negasi, tambo dzecoaxial dzakasanganiswa, uye tambo dzecoaxial dzakadzivirirwa newiri-waya.
Tambo dze coaxial dzinochinjika dzinoshandiswa pakuparadzira terevhizheni dzinogamuchira maantenna ane maconductor ekunze akagadzirwa nefoil kana kuti braid.
Pama microwave frequency, kondakita yekunze inenge yakasimba uye dielectric inenge yakasimba. Muma coaxial cables ane gasi, kondakita yepakati inogadzirwa ne ceramic insulator yakatetepa, ichishandisawo polytetrafluoroethylene. Dry nitrogen inogona kushandiswa se dielectric material.
Muchivharo chakabatana, chivharo chemukati chinosimudzwa chakatenderedza kondakita yemukati, chakatenderedza kondakita yakavharirwa uye chakatenderedza sheya iyi inodzivirira.
Mutambo ye coaxial ine chidzitiro chakapetwa kaviri, zvidimbu zviviri zvekudzivirira zvinowanzopihwa nekupa chidziviriro chemukati nechidziviriro chekunze. Izvi zvinodzivirira chiratidzo kubva kuEMI uye chero mwaranzi inobva kutambo inokanganisa masisitimu ari pedyo.
Impedance yemhando yeCoaxial mutsetse
Hunhu hweimpedance yetambo ye coaxial inogona kuzivikanwa uchishandisa fomura inotevera.
Zo = 138/sqrt(K) * Log(D/d) Ohms
mukati,
K ndiyo dielectric constant yeinsulator iri pakati pemaconductor emukati neekunze. D ndiyo dhayamita yeconductor yekunze uye d ndiyo dhayamita yeconductor yemukati.
Mabhenefiti kana Mabhenefiti eCoaxial Cable
Zvinotevera ndizvo zvakanakira kana zvakanakira tambo ye coaxial:
➨Nekuda kwekushanda kweganda, tambo dze coaxial dzinoshandiswa mukushandiswa kwema frequency akakwira (>50 MHz) dzinoshandisa copper cladding ye centre conductor. Kushanda kweganda kunokonzerwa nemasaini e frequency akakwira anopararira pamusoro pekunze kwe conductor. Zvinowedzera simba rekudhonza kwetambo uye zvinoderedza huremu.
➨Waya yeCoaxial inodhura zvishoma.
➨Chinofambisa chekunze chiri muwaya ye coaxial chinoshandiswa kuvandudza kudzikamisa uye kudzivirira. Izvi zvinoitwa nekushandisa foil yechipiri kana kurukwa kunonzi sheath (yakanyorwa C2 muMufananidzo 1). Jaketi iyi inoshanda sechidziviriro chezvakatipoteredza uye inogadzirwa kuita waya ye coaxial integral sechinhu chinodzivirira moto.
➨Hainyanyi kukanganiswa neruzha kana kukanganiswa (EMI kana RFI) kupfuura tambo dzakamonyoroka.
➨Kana ichienzaniswa ne twisted pair, inotsigira high-bandwidth signal transmission.
➨Iri nyore kuisa waya uye kuwedzera nekuda kwekuchinjika kwayo.
➨Inobvumira kutumirwa kwepamusoro, tambo ye coaxial ine zvinhu zviri nani zvekudzivirira.
Kushata kana Kushata kweCoaxial Cable
Zvinotevera ndizvo zvakaipa zvetambo ye coaxial:
➨Saizi hombe.
➨Kuisa kure kunodhura nekuda kwekukora kwayo nekuoma kwayo.
➨Sezvo tambo imwe chete ichishandiswa kutumira masaini munetwork yese, kana tambo imwe chete ikakundikana, network yese ichadzimwa.
➨Kuchengetedzeka chinhu chikuru chinonetsa sezvo zviri nyore kuteerera tambo ye coaxial nekuipwanya woisa T-connector (BNC type) pakati pezviviri izvi.
➨Inofanira kusimbiswa kudzivirira kupindira.
Nguva yekutumira: Zvita-15-2023
