Rigid-flex PCBs daim ntawv thov: Puas muaj kev txiav txim siab tsim tshwj xeeb rau RF?

Hauv tsab ntawv tshaj tawm no, peb yuav tshawb xyuas cov kev xav no thiab muab qee qhov kev nkag siab rau kev tsim cov PCBs nruj-flex rau RF daim ntawv thov.

Rigid-flex printed circuit boards (PCBs) tau dhau los ua neeg nyiam hauv ntau yam kev siv, suav nrog kev sib txuas lus wireless.Cov PCBs tshwj xeeb no sib xyaw ua ke thiab rigidity, ua rau lawv zoo tagnrho rau cov khoom siv uas xav tau ob qho tib si kev ruaj ntseg thiab yuav tsum tau khoov lossis tsim rau hauv cov qauv sib txawv.

Txawm li cas los xij, thaum nws los txog rau RF (xov tooj cua zaus) daim ntawv thov, cov qauv tsim tshwj xeeb yuav tsum tau txiav txim siab los xyuas kom meej qhov ua tau zoo.

1. Cov khoom siv xaiv: Kev xaiv cov khoom siv hauv cov qauv nruj-flex PCB plays lub luag haujlwm tseem ceeb hauv nws qhov kev ua tau zoo RF.Rau kev siv RF, nws yog ib qho tseem ceeb uas yuav tau xaiv cov khoom uas tsis tshua muaj dielectric tsis tu ncua thiab poob tangent qhov tseem ceeb.Cov yam ntxwv no pab txo cov teeb liab poob thiab cuam tshuam, yog li txhim kho tag nrho RF kev ua tau zoo.Tsis tas li ntawd, xaiv cov khoom tsim nyog substrate thiab tuab yog qhov tseem ceeb rau kev tswj hwm impedance thiab teeb liab kev ncaj ncees.

2. Kab rov tav routing thiab impedance tswj: Cov kab khiav kom raug thiab kev tswj xyuas impedance yog qhov tseem ceeb rau kev siv RF.RF cov cim qhia tau zoo heev rau impedance mismatches thiab kev xav, uas tuaj yeem ua rau lub teeb liab attenuation thiab poob.Txhawm rau ua kom pom kev ua tau zoo, nws raug nquahu kom siv cov txheej txheem tswj impedance routing cov txheej txheem thiab tswj xyuas qhov sib txawv ntawm qhov dav thiab qhov sib txawv.Qhov no pab tswj kom muaj kev cuam tshuam zoo ib yam thoob plaws lub teeb liab txoj kev, txo cov teeb liab poob thiab kev xav.

3. Grounding thiab shielding: Grounding thiab shielding yog ib qho tseem ceeb rau RF tsim kom txo tau electromagnetic cuam tshuam (EMI) thiab crosstalk teeb meem.Cov txheej txheem hauv av kom zoo, xws li siv lub dav hlau hauv av, pab txo cov suab nrov thiab muab cov ntaub ntawv ruaj khov rau cov cim RF.Tsis tas li ntawd, kev koom ua ke nrog kev tiv thaiv kev tiv thaiv xws li tooj liab cladding thiab cov kaus poom tuaj yeem txhim kho qhov kev sib cais ntawm RF teeb liab los ntawm kev cuam tshuam sab nraud.

4. Kev tso kawm ntawm cov khoom siv: kev tso kawm ntawm cov tswv yim tseem ceeb yog qhov tseem ceeb rau cov ntawv thov RF kom txo qis cov teeb liab attenuation tshwm sim los ntawm stray capacitance thiab inductance.Muab cov khoom siv ntau zaus nyob ze rau ib leeg thiab nyob deb ntawm lub suab nrov yuav pab txo qis cov kab mob parasitic capacitance thiab inductance.Tsis tas li ntawd, khaws RF cov cim kom luv li sai tau thiab txo qis kev siv vias tuaj yeem txo cov teeb liab poob thiab ua kom RF ua tau zoo dua.

5. Kev txiav txim siab thermal: RF daim ntawv thov feem ntau ua kom muaj cua sov vim yog lub teeb liab ceev ceev thiab kev siv hluav taws xob.Kev tswj cua sov yog qhov tseem ceeb rau kev tswj xyuas kev ua haujlwm thiab kev ntseeg siab ntawm RF circuits.Cov neeg tsim qauv yuav tsum xav txog cov txheej txheem ua kom txias thiab qhov cua kom zoo kom tshem tawm cov cua sov thiab tiv thaiv txhua yam teeb meem thermal uas yuav cuam tshuam rau kev ua haujlwm ntawm RF.

6. Kev Ntsuas thiab Kev Ntsuas: Cov txheej txheem kuaj nruj thiab siv tau yog qhov tseem ceeb rau RF tsim los xyuas kom meej tias lawv cov kev ua tau zoo raws li qhov yuav tsum tau ua.Cov kev sim xws li kev ntsuas kev ntsuas network, kev ntsuas impedance, thiab kev ntsuas kev ncaj ncees tuaj yeem pab txheeb xyuas cov teeb meem muaj peev xwm thiab txheeb xyuas qhov ua tau zoo ntawm RF ntawm rigid-flex PCBs.

Hauv cov ntsiab lus,Tsim kom muaj kev nruj-flex PCB rau RF daim ntawv thov yuav tsum tau ua tib zoo xav txog ntau yam.Kev xaiv cov khoom siv, kab taug kev, kev tswj xyuas impedance, grounding, shielding, kev tso kawm, kev txiav txim siab thermal thiab kev ntsuam xyuas yog txhua yam tseem ceeb uas yuav tsum tau hais kom ua tiav qhov kev ua tau zoo RF.Los ntawm kev ua raws li cov kev xav no, engineers tuaj yeem ua tiav kev sib koom ua ke ntawm RF ua haujlwm rau hauv cov PCBs nruj-flex rau ntau yam kev siv, suav nrog cov khoom siv sib txuas lus wireless.