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REALIZACIJA STEREO KODERA ZA UKT FM RADIO PRENOS NA BAZI
INTEGRISANOG KOLA
THE IMPLEMENTATION OF STEREO CODER FOR UHF FM RADIO
TRANSMISSION BASED ON THE INTEGRATED CIRCUIT
Autor:
Mitić Ljubomir, uĉenik I r. E.T.Š.” Nikola Tesla” u Beogradu, Regionalni centar za talente
Beograd1-Zemun
Mentor:
dipl.ing. Verica Marinković- “IRITEL” D.D. za telekomunikacije i elektroniku, Batajniĉki
put 23, 11080 Beograd, Jugoslavija
REZIME
Cilj rada je bio da se nadje optimalno rešenje stereo kodera. Kako su strana rešenja skupa i
komplikovana kod nas su razvijena dva domaća stereo kodera: jedan diskretno realizovan i
drugi koji je baziran na stereo ĉipu CTC30-01. Projektni zahtevi su postavljeni na bazi
tehniĉkih propisa za UKT FM radio prenos. Izvršili smo ispitivanja oba ureĊaja i merenja
njihovih tehniĉkih karakteristika u smislu provera predhodno postavljenih projektnih
zadataka. Rezultati merenja ukazuju da rešenje stereo kodera baziranog na stereo ĉipu
CTC30-01 daje bolje rezultate. S obzirom da je ovo rešenje i u hardverskom smislu
jednostavnije kao i da mu je cena izrade niţa opredelili smo se za njega.
Kljuĉne reĉi: UKT FM radio difuzna stanica, stereo koder, radio prenos , kompozitni stereo
signal, mono signal
SUMMARY
The aim of this project was to find the optimal solution for a stereo coder. Since the foreign
ones are expensive end complicated we developed domestic stereo coder: one was produced
descretely and the other one based on the stereo micro chip CTC30-01. The assignment
demands were built on the basic technical regulations for UHF FM radio transmitting. We
have tested both devices and measured there technical merits in order to check the project
aims whish were previously established. The checking results showed that the solution for
stereo coder based on micro chip CTC30-01 gives much better results. Thinking in the way of
a hardware this is a simpler and cheaper solution. Therefor we choose it.
Key words: UHF FM radio broadcasting station, stereo coder, radio transmission, a composite
stereo signal, mono-signal
