Low-area Duty Cycle Correction Circuit for Voltage-Controlled Ring Oscillator

Voltage-Controlled Ring Oscillator for Low Phase Noise Application

A design for a voltage-controlled ring oscillator (VCO) is presented. The design allows an implementation of low frequency ring oscillator using relatively small devices and less stage. It is implemented using .18um technology provided by TSMC technology using 3.3V power supply. The VCO topology exhibits a very wide tuning range from few Hz to 368.9 MHz. It also features the rapid voltage swing...

طراحی و بهبود مشخصه های ساختاری voltage controlled ring oscillator در تکنولوژی cmos

از خصوصیات بارز vco حلقوی می توان به محدوده تنظیم گسترده، طراحی ساده، سطح سیلیکونی کوچک، مجتمع سازی آسان و تلفات توان پایین اشاره کرد. با این حال،نسبت به اسیلاتورهای lc به دلیل ضریب کیفیت پایین، عملکرد نویز فاز اسیلاتورهای حلقوی به طور کلی بسیار ضعیف است، که این یکی از چالش های مهم در طراحی vco حلقوی می باشد. در فصول ابتدایی این پایان نامه سعی بر بررسی ساختارهای مهم و کاربردی vcoهای حلقوی در کن...

Low Power Voltage Controlled And Temperature Compensated CMOS Ring Oscillator

This paper presents a CMOS voltage controlled ring oscillator (VCO) with temperature compensation circuit suitable for low-cost and low-power MEMS gas sensor. This compensated ring oscillator is dedicated to Chopper Stabilized CMOS Amplifier (CHS-A). To operate at low frequency, a control voltage generated by a CMOS bandgap reference (BGR) is described and the measurement results of the fabrica...

Low Phase Noise Voltage - Controlled Oscillator

A Low- Voltage Current-Controlled Oscillator

A new current-controlled oscillator (CCO) is presented which is suitable for use in low-voltage and lowpower designs. These features, and the low supply dependence of this CCO all stem from using a regenerative mechanism in its primitive delay cells. The circuit is designed and simulated in a 0.8um BiCMOS technology.