International Journal of Innovative Technology and Exploring Engineering (IJITEE)
Designing a compact, power efficient Voltage-Controlled Oscillator (VCO) for high frequency Phase Lock Loop (PLL) in modern wireless communication system is decisively a challenging task. Voltage-controlled ring oscillator is crucial component in many wireless communication systems. VCRO is used in PLL circuit, to generate the oscillations and increase the speed of whole system. In this paper, a low power and high speed VCRO is implemented using 250nm CMOS technology provided by generic with 2.5volt power supply.