10 Bit 2/5GHz dual band digitally-controlled LC-oscillator in 0.18 um CMOS process

Ramesh K. Pokharel, Kenta Uchida, Abishek Tomar, Haruichi Kanaya, Keiji Yoshida

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

Abstract

This paper presents a design methodology and verification of a 2/5 GHz dual band digitally-controlled oscillator (DCO). The presented DCO employed two spiral inductors and a switching transistor between them to operate at two bands of frequency. The switch is controlled by a digital signal so that shifting from one band of frequency to another to control the operation of spiral inductors needs no analog voltage signal. The proposed circuit is implemented in 0.18 um CMOS technology and tested. The measured phase noise was -120.5 dBc/Hz and - 113.9 dBc/Hz (both @ 1 MHz offset) at carrier frequency of 2.7 GHz and 4.1 GHz, respectively.

Original languageEnglish
Title of host publicationAPMC 2009 - Asia Pacific Microwave Conference 2009
Pages2284-2287
Number of pages4
DOIs
Publication statusPublished - Dec 1 2009
EventAsia Pacific Microwave Conference 2009, APMC 2009 - Singapore, Singapore
Duration: Dec 7 2009Dec 10 2009

Publication series

NameAPMC 2009 - Asia Pacific Microwave Conference 2009

Other

OtherAsia Pacific Microwave Conference 2009, APMC 2009
CountrySingapore
CitySingapore
Period12/7/0912/10/09

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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