RF coaxial cholumikizira ndi gawo lazolumikizira zamagetsi komanso malo otentha.Kenako, mainjiniya a Cankemeng apanga chidziwitso chaukadaulo cha RF coaxial cholumikizira.
Chidule cha zolumikizira za RF coaxial:
Zolumikizira za coaxial, (Anthu ena amachitchanso RF cholumikizira kapena cholumikizira cha RF. M'malo mwake, cholumikizira cha RF sichifanana ndendende ndi cholumikizira cholumikizira. Kapangidwe ka cholumikizira ena sikutanthauza coaxial, komanso ntchito m'munda wa RF, ndi coaxial cholumikizira angagwiritsidwenso ntchito pafupipafupi otsika, mwachitsanzo, wamba Audio chojambulira pulagi, pafupipafupi si upambana 3MHz Malingaliro achikhalidwe, RF imatanthawuza gulu la MHz Masiku ano, zolumikizira za coaxial zimagwiritsidwa ntchito nthawi zambiri m'gawo la microwave, mawu oti "RF" amagwiritsidwa ntchito nthawi zonse ndipo amaphatikizana ndi mawu oti "microwave"). yomwe ndi nthambi ya zolumikizira.Pali kufanana ndi kusiyana pakati pa zolumikizira.Zolumikizira za coaxial zili ndi ma conductor amkati ndi ma conductor akunja.Woyendetsa wamkati amagwiritsidwa ntchito kulumikiza mzere wa chizindikiro.Woyendetsa akunja sikuti ndi waya wapansi wa mzere wa chizindikiro (womwe umawonetsedwa mkati mwa woyendetsa wakunja), komanso umagwira ntchito yoteteza gawo lamagetsi lamagetsi (kuteteza kusokoneza kwa mafunde amkati amagetsi kupita kunja kudzera mkati. pamwamba pa kondakitala akunja, ndikuteteza kusokoneza kwa gawo lakunja lamagetsi lamagetsi kupita mkati kudzera pakunja kwa kokondakita wakunja), Mbali iyi imapereka cholumikizira coaxial danga lalikulu komanso maubwino ake.Kunja kwa kalozera wamkati ndi mkati mwa chiwongolero chakunja cha coaxial chojambulira kwenikweni ndi mawonekedwe a cylindrical - muzochitika zapadera, nthawi zambiri amafunikira kukonza makina ndikukhala ndi axis wamba, choncho amatchedwa coaxial connectors.Pakati pa mitundu ingapo ya mizere yopatsirana, chingwe cha coaxial chimagwiritsidwa ntchito kwambiri chifukwa cha zabwino zake (mawonekedwe osavuta, kugwiritsa ntchito malo apamwamba, kupanga kosavuta, magwiridwe antchito apamwamba ...), zomwe zimapangitsa kufunika kolumikiza chingwe cha coaxial, ndi cholumikizira coaxial chimayikidwa.Chifukwa cha ubwino wa mawonekedwe a coaxial, kupitiriza kwa chikhalidwe cha (coaxial) cholumikizira (poyerekeza ndi zolumikizira zina) kumatsimikizika mosavuta, kusokoneza ndi kusokoneza (EMI) ndizochepa kwambiri, ndipo kutayika kwapatsirako kumakhala kochepa, choncho pafupifupi amagwiritsidwa ntchito pa wailesi pafupipafupi ndi minda microwave.Chifukwa pafupifupi amagwiritsidwa ntchito pafupipafupi kwambiri, zofunikira zina zamagetsi ndizosiyana ndi zolumikizira zina
Magwiridwe index a RF coaxial cholumikizira
Kuchita kwamagetsi kwa cholumikizira cha RF coaxial kuyenera kukhala ngati kukulitsa chingwe cha RF coaxial, kapena kukhudzidwa kwa siginecha yotumizira kuyenera kuchepetsedwa cholumikizira coaxial chikalumikizidwa ndi chingwe cholumikizira.Chifukwa chake, mawonekedwe a impedance ndi ma voltage stand wave ratio ndizizindikiro zofunika za RF coaxial cholumikizira.Kulepheretsa kwa cholumikizira kumatsimikizira mtundu wa chingwe cholumikizidwa nacho Chiwopsezo choyimira ma wave wave chikuwonetsa mulingo wofananira wa cholumikizira.
A. Kusintha kwa chikhalidwe: chikhalidwe chachibadwa cha chingwe chopatsira chomwe chimatsimikiziridwa ndi mphamvu ndi inductance ya chingwe chotumizira, kuwonetsera kugawidwa kwa magetsi ndi maginito mu chingwe chotumizira.Malingana ngati sing'anga ya mzere wopatsirayo ndi yofanana, khalidwe la impedance ndilokhazikika.Panthawi yotumiza mafunde, E/H imakhala yosasintha.Mzere wopatsira wokhawokha umatsimikizira mawonekedwe ake, ndipo mawonekedwe ake ndi chimodzimodzi kulikonse pa mzere wotumizira.Mu zingwe coaxial kapena coaxial zolumikizira, khalidwe impedance anatsimikiza ndi m'mimba mwake mkati kondakitala akunja, awiri akunja a kondakitala wamkati ndi dielectric mosalekeza sing'anga pakati pa okonda mkati ndi kunja.Pali mgwirizano wotsatira wotsatira.
B. Reflection coefficient: chiŵerengero cha magetsi owonetseredwa ndi magetsi olowera.Kukwera kwa mtengo, mphamvu zosawoneka bwino, kufananiza bwino, kuyandikira kwa chikhalidwe, komanso kupitilirabe
C. Chiŵerengero cha mafunde a Voltage: padzakhala mitundu iwiri ya mafunde omwe akufalikira pamzere wopatsirana wosagwirizana, imodzi ndi mafunde a zochitika ndipo inayo ndi yowonekera.M'madera ena, mafunde amitundu iwiri amapangidwa pamwamba.Mafunde okwera kwambiri samafalikira motsatira mzere wotumizira, koma amaima.Mwa kuyankhula kwina, nthawi zonse pamakhala magetsi okwera kwambiri kapena ochepa pa ndege iliyonse.Mafunde oterowo amatchedwa mafunde oima.VSWR ndi chiŵerengero cha kuchuluka kwa voteji yolowetsa ndi voteji yowonetsera kusiyana pakati pa voteji yolowetsa ndi magetsi owonetsera.Mtengowu ndi wokulirapo kapena wofanana ndi 1, wocheperako ndi wabwinoko, ndipo uli ndi ubale wochulukirachulukira ndi chiwonetsero chazithunzi.
Nthawi yotumiza: Feb-18-2023