Ma RF coaxial connectors, monga zigawo zikuluzikulu za-zotumiza ma siginolo pafupipafupi, amagwiritsidwa ntchito kwambiri polumikizirana, mumlengalenga, kuyesa ndi kuyeza, ndi mbali zina. Kuchita kwawo kumakhudza mwachindunji kukhulupirika kwa siginecha, kuyendetsa bwino ntchito, komanso kudalirika kwadongosolo. Nkhaniyi ikufotokoza mwadongosolo njira zazikuluzikulu zaukadaulo zolumikizira ma RF coaxial kuchokera pamasankhidwe azinthu, kapangidwe kake, njira zopangira, komanso kutsimikizira mayeso.
Kusankha Zinthu ndi Kusamalira Pamwamba
Kuchita kwa RF coaxial zolumikizira kumadalira kwambiri kusankha kwazinthu. Kondakitala wapakati nthawi zambiri amapangidwa ndi zinthu zochititsa chidwi kwambiri monga beryllium copper (BeCu), phosphor bronze (PhBr), kapena golide-yokutidwa ndi aloyi yamkuwa pofuna kutsimikizira kukana kutsika komanso mawonekedwe abwino kwambiri otumizira ma siginecha. Kondakitala wakunja nthawi zambiri amapangidwa ndi chitsulo chosapanga dzimbiri (monga SUS303, SUS316) kapena mkuwa (monga H59, H62) kuti azitha kuwongolera mphamvu zamakina ndi kusinthika. Dielectric insulating nthawi zambiri imapangidwa ndi polytetrafluoroethylene (PTFE), polyimide (PI), kapena ceramic kuti ipereke mawonekedwe okhazikika a dielectric okhazikika komanso otsika kwambiri.
Chithandizo chapamtunda ndichofunikira kuti cholumikizira chisawonongeke komanso kuti chikhale chodalilika. Mankhwala odziwika bwino amaphatikiza golide (Au), faifi tambala (Ni), kapena siliva (Ag) plating. Kuyika kwa golide kumagwiritsidwa ntchito kwambiri-podalirika kwambiri chifukwa cha kulimba kwake kwa okosijeni komanso kusalumikizana bwino; nickel plating imapereka kukana kwabwino kovala komanso chitetezo chapakati.
Kupanga Kwamapangidwe ndi Zofunikira Zofunikira
Mapangidwe a RF coaxial zolumikizira amayenera kutsatira mosamalitsa chiphunzitso cha electromagnetic field kuti awonetsetse kuti kufananiza (nthawi zambiri 50Ω kapena 75Ω) kuti muchepetse zowunikira. Zinthu zazikuluzikulu zamapangidwe ndi:
1. Kufananiza kwa Impedans: Poyang'anira m'mimba mwake ya conductor wamkati, makulidwe a kutchinjiriza, ndi m'mimba mwake wamkati wa conductor wakunja, kufalikira kwa mawonekedwe amtundu wamtunduwu kumatsimikiziridwa kuti agwirizane ndi zofunikira za dongosolo.
2. Kukhathamiritsa kwa Contact Interface: Kugwiritsa ntchito njira yolumikizirana yolimba (monga pini-ndi-mapangidwe a socket) kumathandizira kukhazikika kwa makina komanso kumachepetsa kukana kulumikizana.
3. Chitetezo Chogwira Ntchito: Kapangidwe kakunja kopitilira muyeso (monga kulumikiza kwa ulusi kapena loko ya bayonet) kumalepheretsa kusokoneza kwa electromagnetic (EMI).
Kuphatikiza apo, magawo ofunikira monga kuchuluka kwa ma frequency, kutayika kwa kuyika, voltage Stand wave ratio (VSWR), komanso kulimba (kuzungulira kokwerera) kuyenera kutsimikiziridwa kudzera muyeso ndi kuyesa.
Njira Yopangira ndi Kukonzekera Mwachindunji
Kupanga ma RF coaxial connectors kumakhudza-umisiri wolondola kwambiri, womwe umaphatikizapo izi:
1. Machining: Kutembenuza kwa CNC kapena kupondaponda molondola kumagwiritsidwa ntchito popanga makina amkati ndi akunja, kuonetsetsa kulolerana kwapakati pa ± 0.01mm.
2. Insulator Molding: Zida za dielectric monga PTFE zimakhazikika kupyolera mu jekeseni kapena makina opangira makina kuti atsimikizire kuti akugwirizana kwambiri ndi oyendetsa.
3. Chithandizo cha Pamwamba: Njira yopangira ma electroplating imafuna kuwongolera mwamphamvu kwa makulidwe a zokutira (mwachitsanzo, wosanjikiza wa golide Wokulirapo kapena wofanana ndi 1μm) ndi kufananiza kuti tipewe kusokoneza pakutumiza kwa chizindikiro.
Pazambiri-zogwiritsa ntchito pafupipafupi (monga ma millimeter-mawave band), njira zama micromachining (monga kudula ndi laser) ndizofunikiranso kuti muwongolere bwino mawonekedwe a electrode.
Kuyesa ndi Kutsimikizira Ubwino
Kuonetsetsa kuti cholumikizira chikukwaniritsa miyezo (monga IEC 61169 ndi MIL-STD-348), kuyesa kokwanira ndi kutsimikizira ndikofunikira, kuphatikiza:
1. Kuyesa kwamagetsi: Kuyeza kutayika kwa kuyika, kutayika kwa kubwerera (VSWR), kukana kukhudzana, ndi kuyankha pafupipafupi.
2. Kuyesa kwamakina: Kuwunika mphamvu yoyika ndi kuchotsa, mphamvu yosunga, ndi kugwedezeka / kugwedezeka.
3. Kuyesa kusinthasintha kwa chilengedwe: Kuphatikizira kupalasa njinga kwapamwamba komanso kotsika (madigiri -55 kufika ku +125 digiri), kuyezetsa kupopera mchere wamchere, ndi kuyesa chinyezi.
Makina oyesera okha (monga ma vector network analyzers (VNAs)) amatha kujambula bwino deta yofunikira ndikuwongolera kukhathamiritsa kwapangidwe.
Kupititsa patsogolo magwiridwe antchito a RF coaxial cholumikizira kumadalira kulumikizana kwa sayansi yazinthu, kupanga mwatsatanetsatane, komanso kuyesa mwamphamvu. Ndi chitukuko cha 5G, satellite communications, ndi matekinoloje apamwamba-otumiza deta mwachangu, zolumikizira zidzasintha kupita ku ma frequency apamwamba (monga terahertz), kukula kochepa, ndi kutayika kochepa. Kuwongolera mosalekeza pamapangidwe ndi njira kumatha kupititsa patsogolo kudalirika kwawo komanso kusinthika m'malo ovuta kwambiri.