Custom 2-lakab PTFE PCB

Guud ahaan, soo noqnoqda sare waxaa lagu qeexi karaa inta jeer ee ka sarreeya 1GHz.Waqtigan xaadirka ah, walxaha PTFE waxaa si weyn loogu isticmaalaa soosaarka PCB ee soo noqnoqda, sidoo kale waxaa loo yaqaan Teflon, kaas oo inta jeer ka sarreeya 5GHz.Ka sokow, FR4 ama substrate PPO waxaa loo isticmaali karaa inta jeer ee wax soo saarka ee 1GHz ~ 10GHz.Saddexdan nooc ee soo noqnoqda ee soo noqnoqda waxay leeyihiin kala duwanaansho hoose:

Ku saabsan qiimaha laminateerka ee FR4, PPO iyo Teflon, FR4 waa kan ugu jaban, halka Teflon uu yahay kan ugu qaalisan.Marka la eego DK, DF, nuugista biyaha iyo muujinta soo noqnoqda, Teflon ayaa ugu fiican.Marka codsiyada alaabadu u baahan yihiin inta jeer ee ka sarreysa 10GHz, kaliya waxaan dooran karnaa substrate Teflon PCB si loo soo saaro.Waxqabadka Teflon aad ayuu uga fiican yahay substrate-ka kale, Si kastaba ha ahaatee, substrate-ka Teflon wuxuu leeyahay faa'iido darrada qiimaha sare iyo hantida kulaylka badan ee u adkaysata.Si loo hagaajiyo qallafsanaanta PTFE iyo shaqada hantida kulaylka u adkaysata, tiro badan oo SiO2 ama galaas fiber ah sida walxaha buuxinta.Dhanka kale, sababtoo ah molecule inertia ee walxaha PTFE, taas oo aan sahlanayn in lagu daro foornada naxaasta ah, sidaas darteed, waxay u baahan tahay in la sameeyo daaweynta dusha gaarka ah ee dhinaca isku dhafka ah.Ku saabsan daaweynta dusha isku dhafan, sida caadiga ah u isticmaal etching kiimikaad dusha PTFE ama balaasmaha etching oo lagu daro qallafsanaanta dusha sare ama ku dar hal filim dhejis ah oo u dhexeeya PTFE iyo foil naxaas ah, laakiin kuwani waxay saameyn karaan waxqabadka dielectric.