Title :
Another approach to design a sinusoidal oscillator: Ensuring the oscillation stability
Author :
Utomo, Dzuhri Radityo
Author_Institution :
Dept. of Electr. Eng. & Inf. Technol., Univ. Gadjah Mada, Yogyakarta, Indonesia
Abstract :
Another approach to design a sinusoidal oscillator is proposed. This design is proposed to improve the oscillation stability of sinusoidal oscillator. The ideal model of this oscillator does not have any specific oscillation criterion. This property ensures the oscillation stability of this oscillator. Any changes in oscillation frequency does not violate the oscillation stability. This oscillator design can be implemented using op-amps and passive components. But the characteristics of op-amps influence the oscillator, thus change the characteristics of this oscillator. So a more realistic model is needed to predict the behaviour of this oscillator circuit more accurately. The realistic model is built by considering the characteristics of op-amps. Based on this model, a gain adjustment is needed by this circuit. Without any proper adjustment, a stable oscillation does not occur in this circuit. The realistic model is also used to predict the oscillation frequency of this oscillator and it produces a result that is similar to the simulation result.
Keywords :
operational amplifiers; passive networks; stability; voltage-controlled oscillators; gain adjustment; op-amps; oscillation frequency; oscillation stability; oscillator circuit; passive components; sinusoidal oscillator; Gain Adjustment; Oscillation Criterion; Oscillation Stability; Sinusoidal Oscillators; Variable Frequency;
Conference_Titel :
Information Technology and Electrical Engineering (ICITEE), 2013 International Conference on
Conference_Location :
Yogyakarta
Print_ISBN :
978-1-4799-0423-5
DOI :
10.1109/ICITEED.2013.6676280