TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Micro Controlling Radio Transmitting Frequency
(Controlul frecventei de transmisie radio cu ajutorul microcontrollerelor)
Vol LXI • No. 1/2009
Vasile Buruiană
Universitatea Petrol-Gaze din Ploiesti, Bd. Bucuresti 39, Ploiesti
e-mail: foxpro@personal.ro

 Keywords   Phase Lock Loop, microcontroller, radio frequency, radio transmitting channels.

 Abstract
This paper analyses and proposes two methods for digital control of the radio transmitting frequency. Setting the frequency transmission is ensured by a Microchip family microcontroller. A PLL-based transmitter is described, and also our experiments for direct control of the frequency using PIC circuits. We present the advantages and disadvantages, programs and program sequences for future research and design of radio modules using digitally controlled transmitting frequency.

 Rezumat
Lucrarea analizează şi propune două metode pentru a controla digital frecvenţa de transmisie radio. Un microcontroller din familia Microcip efectuează reglajul frecvenţei de transmisie. Sunt prezentate un transmiţător cu buclă PLL şi experimentele de control direct al frecvenţei folosind circuite din familia PIC. Sunt prezentate avantaje şi dezavantaje, programe şi secvenţe de program pentru cercetări ulterioare şi proiectarea de module radio cu control digital al frecvenţei de transmisie.



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