Design of 1.1 GHz highly linear digitally-controlled ring oscillator with wide tuning range

A. Tomar, Ramesh Pokharel, O. Nizhnik, Haruichi Kanaya, K. Yoshida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

This paper presents a simple architecture for 8-bit digital controlled oscillator (DCO) on 3-stages ring topology in TSMC 0.35um CMOS technology. A new schematic of tristate inverter is also proposed. The proposed tristate inverter has higher switching speed and low power consumption as compared to conventional one. The control digit changes the driving current that provides large tuning range from 333 MHz to 1472 MHz with very good linearity. The output voltage swing is constant and above 3volt (>90% of the supply voltage i.e. 3.3V). The presented circuit shows the fast response to the output frequency transition and this takes less than one clock period and without showing any ringing or damping during frequency transition. The proposed DCO has simulated phase noise of -106dBc/Hz @1Mhz and 63.4 mw power consumption at 1.1 GHz central frequency.

Original languageEnglish
Title of host publicationRFIT 2007 - IEEE International Workshop on Radio-Frequency Integration Technology
Pages82-85
Number of pages4
DOIs
Publication statusPublished - Dec 1 2007
EventIEEE International Workshop on Radio-Frequency Integration Technology, RFIT 2007 - Singapore, Singapore
Duration: Dec 9 2007Dec 11 2007

Other

OtherIEEE International Workshop on Radio-Frequency Integration Technology, RFIT 2007
CountrySingapore
CitySingapore
Period12/9/0712/11/07

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

Cite this

Tomar, A., Pokharel, R., Nizhnik, O., Kanaya, H., & Yoshida, K. (2007). Design of 1.1 GHz highly linear digitally-controlled ring oscillator with wide tuning range. In RFIT 2007 - IEEE International Workshop on Radio-Frequency Integration Technology (pp. 82-85). [4443926] https://doi.org/10.1109/RFIT.2007.4443926