This paper is presented 10 GHz voltage controlled ring oscillator for high speed application. The voltage controlled ring oscillator was designed and fabricated in 0.13μm CMOS technology. The oscillator is 7-stages ring oscillator with one inverter replaced by NAND-gate for shutting down in the ring oscillator during idle mode.. We also used of several techniques such as transistor sizing to im...

The modern communication technologies require the use of CMOS monolithic oscillators because of their small manufacturing costs and high integration capabilities. The disadvantages of CMOS ring oscillators can be compensated through the use of a VCO architecture. The control voltage of this VCO should compensate for the frequency drift due to process and temperature.

A modif ied ring oscillator presented in this paper. The voltage control oscillator is designed and simulated in 50nm CMOS technology. The frequency of oscillation of the VCO is 2.6GHz with 0.064 mW power dissipation and the center drain current of 64uA is us ed. Tuning range is of 72% and the jitter is of 39.8pS. Index Terms Voltage Controlled Oscillator (VCO), power dissipation, jitter, tunin...

The work is based on Current Starved Voltage controlled oscillator (CSVCO) for a Phase Locked Loop (PLL) in 180 nm process. Phase locked loop’s were used in most of the application for clock generation and recovery as well. As the technology grows faster in the existing generation, there has to be quick development with the technique. In most of the application PLL’s were used for clock and dat...

This thesis describes the circuit level design of a 900MHz EA ring oscillator based phase-locked loop using 0.35um technology. Multiple phase noise theories are considered giving insight into low phase-noise voltage controlled oscillator design. The circuit utilizes a fully symmetric differential voltage controlled oscillator with cascode current starved inverters to reduces current noise. A co...

In this work a non-linear efficiency optimization method for its application to an Injection-Locked High Efficiency Voltage Controlled Oscillator is presented. The proposed approach is based on the control of the harmonic content of the oscillator autonomous signal, which is accomplished through the use of an Auxiliary Generator and several multi-harmonic loads based on Arbitrarily Width-Modula...

A 1.2V 5GHz low-cost voltage-controlled oscillator (VCO) with active common mode feedback has been implemented in a CMOS/RF 90nm technology for a robust I/Q generation using a frequency divider-by-2 (DIV2). As the input common mode of the DIV2 affects critically its performance, a calibration method to correct the output common mode of the VCO has been proposed and validated through post-layout...

Realization of a novel single-resistance-controlled oscillator, employing an active element and all grounded passive elements, is the purpose of this manuscript. With requirements for completing the design being only a single Voltage Differencing Current Conveyor and four grounded passive components, it is also a preferable choice for integrated circuit implementation. The designed circuit has ...