Low-power high-tuning range CMOS ring oscillator VCOs

This paper presents the design of two new ring oscillators based on differential and single-ended topologies using a 0.13 mum 1P8M CMOS technology. The differential oscillator utilizes feed-forward technique and a new composite load with inductive impedance, reducing the delay per stage and widening...

Full description

Saved in:
Bibliographic Details
Main Authors: Parvizi, M., Khodabakhsh, A., Nabavi, A.
Format: Conference Proceeding
Language:English
Subjects:
Circuit optimization
Circuit topology
CMOS ring oscillator VCO
CMOS technology
composite load
Delay
Feedforward systems
Frequency
High tuning range
Impedance
Phase noise
Ring oscillators
Tuning
Voltage controlled oscillator (VCO)
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents the design of two new ring oscillators based on differential and single-ended topologies using a 0.13 mum 1P8M CMOS technology. The differential oscillator utilizes feed-forward technique and a new composite load with inductive impedance, reducing the delay per stage and widening the tuning range. The output frequency ranges from 0.5 to 9.5 GHz and the circuit consumes only 9 mW. The simulation result of phase noise is -85.3 dBc/Hz @ 1 MHz offset from centre frequency. The single-ended ring oscillator with inductive composite load oscillates from 6.3 to 13.9 GHz and consumes only 5.1 mW with phase noise of -81.5 dBc/Hz @ 1 MHz offset from centre frequency.
DOI:10.1109/SMELEC.2008.4770273