A Colpitt's Oscillator Using SAW Device for Greater Temperature and Frequency Range

The latest researches have cleared that the high stability is required to improve the efficiency in the high frequency range. The Colpitt's oscillator is designed for generation of high frequency sustained oscillations. The Colpitt's type of oscillators is widely used for commercial purposes. In this paper we have proposed a new design of a Colpitt's type oscillator using the SAW device in the feedback network for higher frequency range and greater temperature stability. High frequency oscillators are required for the development of mobile, radio communication and other equipment and sensor. The proposed oscillator circuit can operate from lower frequency range to higher frequency range with greater temperature stability. The oscillator circuitry composed of a common emitter amplifier and SAW device in the feedback loop to achieve the sustained oscillations at higher frequency and greater stability for large temperature range. This paper presents design and simulation of the SAW based Colpitt's oscillator which can be used for high frequency range with higher stability for larger temperature range.