Low phase noise 18 kHz frequency tuning step 5 GHz DCO using tiny capacitors based on transmission lines

Ramesh Pokharel, K. Uchida, A. Tomar, Haruichi Kanaya, K. Yoshida

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

3 Citations (Scopus)

Abstract

We proposed a method to realize the fine frequency-tuning step using tiny capacitors instead of MIM capacitors for a digitally controlled oscillator (DCO). The tiny capacitors are realized by the coplanar transmission lines in a 6 metal layers (M6) foundry of 0.18 um CMOS technology. These transmission line based capacitors are designed by using electromagnetic field simulator, and co-designed by using SPICE simulator. Finally, we fabricated the proposed DCO in 0.18 um CMOS technology, and tested. The measured phase noise of DCO was -118.3 dBc/Hz (@1MHz offset frequency), and the oscillating frequency tuned from 4.86 GHz to 5.36 GHz in the minimum frequency-tuning step of 18 kHz.

Original languageEnglish
Title of host publication2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010 - Digest of Papers
Pages8-11
Number of pages4
DOIs
Publication statusPublished - Apr 23 2010
Event2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010 - New Orleans, LA, United States
Duration: Jan 11 2010Jan 13 2010

Publication series

Name2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010 - Digest of Papers

Other

Other2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010
CountryUnited States
CityNew Orleans, LA
Period1/11/101/13/10

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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    Pokharel, R., Uchida, K., Tomar, A., Kanaya, H., & Yoshida, K. (2010). Low phase noise 18 kHz frequency tuning step 5 GHz DCO using tiny capacitors based on transmission lines. In 2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010 - Digest of Papers (pp. 8-11). [5422841] (2010 10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 2010 - Digest of Papers). https://doi.org/10.1109/SMIC.2010.5422841