M'zaka zaposachedwapa, ndi chitukuko chofulumira cha mauthenga opanda zingwe ndi teknoloji ya radar, kuti apititse patsogolo mtunda wotumizirana, m'pofunika kuwonjezera mphamvu yotumizira dongosolo.Monga gawo la makina onse a microwave, zolumikizira za RF coaxial ziyenera kupirira zofunikira zotumizira zamphamvu zamphamvu.Nthawi yomweyo, mainjiniya a RF amafunikiranso kuyesa ndi kuyeza kwamphamvu kwambiri pafupipafupi, ndipo zida za microwave / zida zomwe zimagwiritsidwa ntchito pamayeso osiyanasiyana zimafunikiranso kupirira mphamvu zambiri.Ndi zinthu ziti zomwe zimakhudza mphamvu yamagetsi a RF coaxial zolumikizira?Tiyeni tiwone
● Kukula kwa cholumikizira
Kwa ma siginecha a RF a ma frequency omwewo, zolumikizira zazikulu zimakhala ndi kulolerana kwakukulu kwamphamvu.Mwachitsanzo, kukula kwa pinhole yolumikizira kumagwirizana ndi mphamvu yamakono ya cholumikizira, chomwe chimagwirizana mwachindunji ndi mphamvu.Pakati pa zolumikizira zosiyanasiyana za RF coaxial, 7/16 (DIN), 4.3-10, ndi zolumikizira zamtundu wa N ndizokulirapo, ndipo makulidwe a pinhole nawonso ndi akulu.Nthawi zambiri, kulolerana kwamphamvu kwa zolumikizira zamtundu wa N ndi pafupifupi nthawi za SMA 3-4.Kuphatikiza apo, zolumikizira zamtundu wa N zimagwiritsidwa ntchito kwambiri, ndichifukwa chake zida zambiri zomwe zimangokhala ngati zolumikizira ndi zolemetsa pamwamba pa 200W ndi zolumikizira zamtundu wa N.
●Kugwira ntchito pafupipafupi
Kulekerera kwamphamvu kwa zolumikizira za RF coaxial kudzachepera pomwe ma frequency amawu amawonjezeka.Kusintha kwa ma frequency amtundu wotumizira mwachindunji kumabweretsa kusintha kwa kutayika komanso kuchuluka kwa mafunde amagetsi, zomwe zimakhudza mphamvu yotumizira mphamvu ndi zotsatira za khungu.Mwachitsanzo, cholumikizira cha SMA chambiri chimatha kupirira pafupifupi 500W yamphamvu pa 2GHz, ndipo mphamvu yapakati imatha kupirira zosakwana 100W pa 18GHz.
●Voltage stand wave ratio
Chojambulira cha RF chimatchula kutalika kwa magetsi panthawi yopanga.Mu mzere wautali wochepa, pamene khalidwe la impedance ndi katundu wolemetsa sizili zofanana, gawo la voteji ndi zamakono kuchokera kumapeto kwa katundu zikuwonekera kumbuyo kwa mphamvu, yomwe imatchedwa mafunde.Mafunde onyezimira;magetsi ndi magetsi kuchokera kugwero kupita ku katundu amatchedwa mafunde a zochitika.Mafunde otsatizana ndi mafunde a zochitikazo ndi mafunde owonetseredwa amatchedwa mafunde oima.Chiyerekezo cha kuchuluka kwa voteji ndi mtengo wocheperako wa mafunde oyimilira amatchedwa chiwongolero cha ma wave wave ratio (atha kukhalanso mafunde oyimirira).Mafunde owonetseredwa amatenga danga la mphamvu ya chiteshi, zomwe zimapangitsa kuti mphamvu yotumizira ichepe.
●Kutayika kolowetsa
Kutayika kwa insertion (IL) kumatanthauza kutayika kwa mphamvu pamzere chifukwa cha kukhazikitsidwa kwa zolumikizira za RF.Kutanthauzidwa ngati chiŵerengero cha mphamvu yotulutsa ku mphamvu yolowera.Pali zinthu zambiri zomwe zimawonjezera kutayika kwa cholumikizira kuyika, makamaka chifukwa cha: kusagwirizana kwa chikhalidwe, kulakwitsa kwa msonkhano, kusiyana kwa nkhope, kupendekeka kwa axis, lateral offset, eccentricity, kulondola kwa processing ndi electroplating, etc. Chifukwa cha zotayika, pali kusiyana pakati pa kulowetsa ndi kutulutsa mphamvu, zomwe zidzakhudzanso mphamvu yoyimilira.
●Kuthamanga kwa mpweya wokwera
Kusintha kwa kuthamanga kwa mpweya kumayambitsa kusintha kwa dielectric pafupipafupi pagawo la mpweya, ndipo pakathamanga pang'ono, mpweya umapangidwa mosavuta kuti ukhale ndi corona.Kukwera pamwamba, kutsika kwa mpweya ndi mphamvu zochepa.
●Kulimbana ndi kukaniza
Kukana kolumikizana kwa cholumikizira cha RF kumatanthawuza kukana kwa malo olumikizirana amkati ndi akunja kolumikizira pomwe cholumikizira chalumikizidwa.Nthawi zambiri imakhala mu milliohm, ndipo mtengo wake uyenera kukhala wocheperako momwe ungathere.Imawunika makamaka mawonekedwe a makina olumikizirana, ndipo zotsatira za kukana kwa thupi ndi kukana kwa mgwirizano wa solder ziyenera kuchotsedwa pakuyezera.Kukhalapo kwa kukana kukhudzana kumapangitsa kuti zolumikizirana zizitenthedwa, zomwe zimapangitsa kuti zikhale zovuta kutumiza ma siginecha akulu amphamvu a microwave.
●Zida zogwirizanitsa
Mtundu womwewo wa cholumikizira, pogwiritsa ntchito zida zosiyanasiyana, udzakhala ndi kulekerera kwamphamvu kosiyana.
Kawirikawiri, chifukwa cha mphamvu ya mlongoti, ganizirani mphamvu yake yokha ndi mphamvu ya cholumikizira.Ngati pakufunika mphamvu zapamwamba, mungathemakondacholumikizira zitsulo zosapanga dzimbiri, ndi 400W-500W palibe vuto.
E-mail:info@rf-miso.com
Foni: 0086-028-82695327
Webusayiti: www.rf-miso.com
Nthawi yotumiza: Oct-12-2023
