Kev xaiv ntawm PCB substrates rau satellite, radar, thiab cov xwm txheej tswj kev ya davhlau yuav tsum raug sib tw nyob ib puag ncig lawv cov kev khiav hauj lwm zaus bands, ib puag ncig kam rau ua, thiab lub hom phiaj kev cia siab rau lub sij hawm ntev, thiab yuav tsum tsis txhob blindly nrhiav cov ntaub ntawv high-end.
Kev xaiv ntawm PCB substrate rau satellite scenes
Satellite scenes xav tau kev tiv thaiv rau cosmic rays thiab huab cua sib txawv ntawm -55℃thiab 125 degree, nrog rau kev tsim lifespan feem ntau tshaj 10 xyoo. Cov tub ntxhais guarantees teeb liab theem sib xws thiab cov qauv stability.
Satellite mounted phased array kav hlau txais xov RF txheej: Rogers RO4003C los yog Taconic RF-3500 yog nyiam, nrog ib tug ruaj khov Dk ntawm ib ncig ntawm 3.5, Df Tsawg dua los yog sib npaug rau 0.0037, Haum rau high-frequency signals saum 40GHz, impedance kam rau ua yuav tswj nyob rau hauv 1Ω ± .
Satellite universal tswj txheej: txais yuav high-frequency mixed siab qauv, xws li HJY350A + S1000-M ua ke nrog tshwj xeeb semi kho zaj duab xis, uas sib npaug poob qis thiab txhua yam muaj zog, thaum ua tiav lub teeb yuag thiab txo qhov hnyav.
Muaj kev ntseeg siab rau qhov kev tshawb nrhiav qhov chaw sib sib zog nqus: xaiv Tly-5 ntshiab PTFE substrate, Dk=2.33, Df=0.0015, Nyob rau hauv huab cua kub hloov pauv, Dk drift tus nqi tsawg dua 0.5%, kom ntseeg tau lub teeb liab ntev ntev rau ntau tshaj 20 xyoo.
Kev xaiv ntawm PCB substrate rau radar scene
Qhov ntau zaus ua haujlwm ntawm lub radar system npog X-band rau 77GHz millimeter nthwv dej, nrog cov ntsiab lus tseem ceeb ntawm cov teeb liab qis qis, siab thermal conductivity, thiab kev zam ntawm lub zog hluav taws xob xa hluav taws xob attenuation.
77GHz tsheb/airborne millimeter yoj radar: Xaiv Rogers RO3003 los yog RT5880, nrog tsis tshua muaj dielectric poob, muaj peev xwm txhawb nqa high-precision teeb liab kis tau tus mob ntawm millimeter yoj theem, kom ntseeg tau radar ntau yam raug.
X-band Synthetic Aperture Radar (SAR): Txais RO4350B + RT5880 sib xyaw ua ke hluav taws xob, nws tsis tsuas yog ua tau raws li qhov xav tau ntawm kev poob qis, tab sis kuj txhim kho cov thermal conductivity ntawm lub substrate, sai sai dissipating tshav kub generated los ntawm RF lub hwj chim amplifier.
Hauv av raws li tej thaj chaw deb ceeb toom radar: ceramic ntim cov khoom sib xyaw substrate, xws li Arlon AD450, yog xaiv, Dk=3.4, siab txhua yam muaj zog, muaj peev xwm tiv taus lub sij hawm ntev sab nraum zoov ntsev tsuag thiab kev co ib puag ncig.
Kev xaiv ntawm PCB substrate rau davhlau tswj scenarios
Cov kab hauv qab ntawm lub davhlau tswj system yog tiv thaiv kev vibration, tiv thaiv qhov kub thiab txias, thiab xoom teeb liab cuam tshuam, ua qhov tseem ceeb ntawm kev ncaj ncees ntawm cov khoom siv hluav taws xob thiab kev siv tshuab, tsis muaj qhov muag tsis pom kev nrhiav cov khoom siv ntau zaus.
Ordinary cov neeg siv khoom qib drone davhlau tswj: Siab Tg FR-4 board nrog Tg tus nqi Ntau dua lossis sib npaug li 170℃raug xaiv kom tsis txhob delamination thiab deformation nyob rau hauv qhov kub siab tshaj 70℃hauv chav tsev thaum lub caij ntuj sov. Tus nqi yog tswj tau thiab ua tau raws li qhov yuav tsum tau muaj ntawm 2.4GHz cov ntaub ntawv xa mus txuas.
Kev tswj lub dav hlau nrog high-precision GNSS / RTK navigation: RO4350B substrate yog siv hauv zos hauv RF txheej tseem ceeb kom ntseeg tau tias tsis tshua muaj suab nrov ntawm L1 / L2 zaus band navigation signals, thaum siab Tg FR-4 tseem siv los sib npaug cov nqi hauv cov txheej txheem tswj cov seem.
Cov qib kev lag luam / hnyav-tsav ya davhlau tswj: siv cov nplaim hluav taws kub-retardant siab Tg substrates nrog cov qib CTI siab dua, muaj peev xwm tiv taus kev vibrations thiab muaj kev cuam tshuam siab tam sim no, thiab zam kev cuam tshuam lub zog los ntawm lub cev muaj zog uas cuam tshuam nrog kev tswj xyuas lub ntsiab.
General xaiv cov ntsiab cai
Qhov tseem ceeb sib piv cov zaus band rau kev ua haujlwm hluav taws xob: Siab Tg FR-4 txaus rau kev tswj cov txuas hauv qab 1GHz; Rogers 4000 series hydrocarbon cov ntaub ntawv yog siv rau zaus ntawm 1 txog 10 GHz; PTFE substrate tsuas yog xaiv rau ultra-high zaus scenarios saum 10GHz.
Environmental kam rau ua raws li cov kev cai: ua ntej xaiv CAF resistant thiab siab CAF resistant substrates rau shipborne / airborne scenarios; Qhov kev ntseeg siab ntawm qhov chaw sib sib zog nqus yuav tsum raug txheeb xyuas los ntawm ntau tshaj 200 qhov kev ntsuam xyuas thermal cycling ntawm -55℃~ 125 degree.
Kev tswj hwm tus nqi stratification: Txais siv "kev sib xyaw ua ke tsim", tsuas yog cov khoom siv tshwj xeeb tshwj xeeb tshwj xeeb yog siv rau cov txheej txheem RF tseem ceeb, thiab siab Tg FR-4 yog siv rau qhov seem loj-thaj chaw tswj txheej, uas tuaj yeem txo tus nqi ntawm pawg thawj coj los ntawm ntau dua 30% thaum ua kom muaj kev ua tau zoo.