Design of a Twisted-pair Line Simulator

نویسندگان

  • Andrej Levstek
  • Matija Pirc
چکیده

Povzetek. Delo obravnava načrtovanje umetne linije za simulacijo sukanega para, ki je še vedno najbolj razširjen komunikacijski medij na ravni lokalne zanke v slovenskem in tudi evropskem prostoru. Predstavljena je analitična pot načrtovanja in sinteze umetne linije za testiranje komunikacijskih naprav. Izhodišče je določeno s tehničnimi in ekonomskimi zahtevami, ki pomenijo robne pogoje za realizacijo. Na podlagi standardov je zasnovana osnovna topologija vezja, ki upošteva privzete specifikacije. Za simetrični vodnik je narejena analiza impedance in frekvenčnega odziva. Izračuni in poteki se nanašajo na konkretne podatke o materialih, ki se uporabljajo v telekomunikacijskih omrežjih. Za izbrano topologijo so izračunani koncentrirani elementi in predlagana ustrezna realizacija. Vseskozi je vodilna zahteva, da mora biti vezje kompatibilno z mikroprocesorskim sistemom in mora omogočati neposredno procesorsko vodenje testiranja naprav in nadzor nad delovanjem umetne linije. Na izdelani liniji so bile opravljene meritve, ki so pokazale odstopanja med uporabljenim teoretičnim modelom in praktično realizacijo umetne linije. Raziskana in pojasnjena so bila odstopanja in mehanizmi, ki ustvarjajo razliko med teoretičnim modelom in praktično realizacijo. Ob koncu prispevka so podane tudi smernice za izboljšavo modela.

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تاریخ انتشار 2008