Abstract
A 14-bit digitally controlled ring oscillator (DCO) with operating frequency up to 1 GHz in 0.18 m CMOS technology is designed. The design used digital control to obtain higher output voltage swing and to get lower flicker noise compared to the analog counterpart. To make the oscillator oscillate and to get stable quadrature output in the even number of stages, feed-forward technique is used. Designed DCO has tuning frequency range from 212 MHz to 1 GHz. Phase noise at 4 MHz frequency offset is 137.81 dBc/Hz. Figure of Merit (FoM) calculated as big as 162.25 dBc/Hz, an improvement of about 6 dB from the recently published result.
| Original language | English |
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| Title of host publication | Asia-Pacific Microwave Conference Proceedings, APMC 2011 |
| Pages | 255-258 |
| Number of pages | 4 |
| Publication status | Published - Dec 1 2011 |
| Event | Asia-Pacific Microwave Conference, APMC 2011 - Melbourne, VIC, Australia Duration: Dec 5 2011 → Dec 8 2011 |
Publication series
| Name | Asia-Pacific Microwave Conference Proceedings, APMC |
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Other
| Other | Asia-Pacific Microwave Conference, APMC 2011 |
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| Country | Australia |
| City | Melbourne, VIC |
| Period | 12/5/11 → 12/8/11 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
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Cite this
Nugroho, P., Pokharel, R., Anand, A., Tomar, A., Kanaya, H., & Yoshida, K. (2011). Development of low phase noise quadrature output digitally controlled CMOS ring oscillator. In Asia-Pacific Microwave Conference Proceedings, APMC 2011 (pp. 255-258). [6173734] (Asia-Pacific Microwave Conference Proceedings, APMC).