PCB high-frequency boardthiab lub rooj tsavxwm zoo tib yam yog ob hom khoom siv hluav taws xob (PCB), uas muaj qhov sib txawv ntawm qhov kev thov, kev ua haujlwm, thiab kev xaiv cov khoom siv.
Ua ntej, PCB high-frequency board yog ib hom khoom siv hluav taws xob hluav taws xob tshwj xeeb tsim los rau kev tsim hluav taws xob ntau zaus. Piv nrog rau cov boards zoo tib yam, PCB high-frequency boards muaj qis dielectric tas li, qhov poob qis dua, thiab cov teeb liab kis tau zoo dua. Qhov no ua rau nws muaj cov ntawv thov tseem ceeb hauv kev xa xov hluav taws xob ntau zaus, xov tooj cua zaus (RF) circuits, microwave kev sib txuas lus, thiab lwm yam.
Thib ob, PCB high-frequency boards muaj ntau yam khoom siv sib txawv. Qhov ntau tshaj plaws yog polytetrafluoroethylene (PTFE), uas muaj cov rwb thaiv tsev zoo heev thiab cov yam ntxwv tsis zoo, haum rau cov teeb liab kis tau zoo. Tsis tas li ntawd, cov ntaub ntawv xws li polyimide (PI), chlorinated cyanonitrile (CEM), thiab iav fiber ntau kuj tau siv rau hauv kev tsim cov PCB siab zaus.
Polytetrafluoroethylene (PTFE) yog cov khoom siv ua haujlwm siab ua haujlwm siab siv dav hauv kev sib txuas lus hauv microwave. Nws muaj cov yam ntxwv ntawm qhov tsis tshua muaj dielectric tsis tu ncua, tsis tshua muaj qhov tsis zoo, cov khoom siv zoo heev, thiab cov tshuaj lom neeg zoo. PTFE high-frequency boards feem ntau yog tsim los siv nyias zaj duab xis tooj liab txheej tshuab, uas muaj peev xwm ua tau zoo dua cov teeb liab kis tau tus mob thiab tiv thaiv kev cuam tshuam kev ua tau zoo, thiab yog haum rau daim ntaub ntawv xws li high-frequency antennas thiab radar systems.
Polyimide (PI) yog lwm cov khoom siv hluav taws xob ntau zaus, uas muaj cov thermal stability zoo, qhov ruaj khov, thiab cov khoom hluav taws xob. Yog li ntawd, PI high-frequency boards yog dav siv nyob rau hauv teb xws li aerospace, satellite kev sib txuas lus, thiab high-ceev mobile kev sib txuas lus. Raws li cov kev xav tau sib txawv, PI cov rooj tsav tsheb loj tuaj yeem tsim nrog cov ntaub ntawv sib xyaw, ntau txheej boards, lossis cov qauv tshwj xeeb kom ua tiav cov teeb liab muaj zog ntau dua thiab EMI (electromagnetic cuam tshuam) shielding.
Chlorinated Cyanonitrile (CEM) yog cov khoom siv hluav taws xob tsawg tsawg nrog cov neeg kho tshuab zoo thiab kub-resistant, haum rau cov ntawv thov uas yuav tsum tau ua haujlwm tsawg. CEM high-frequency boards feem ntau siv nyob rau hauv RF modules, lub hwj chim amplifiers, khoom kho mob, thiab lwm yam teb.