Referenced Items are not available for this document.
This brief presents a wide frequency range digitally controlled oscillator (DCO) with low supply sensitivity and low power consumption. We propose a compensation scheme employing feedforward inverters to suppress supply noise. Both wide frequency range and fine resolution are obtained using a hierarchical architecture consisting of a coarse delay chain and an interpolator. The proposed DCO was fabricated in a 0.13-μm CMOS process. It successfully eliminates noise components due to supply variation. The phase noise at 1-MHz frequency offset from the carrier frequency of 700 MHz is -106.3 dBc/Hz. The frequency range of the DCO is measured from 320 MHz to 1.25 GHz.
Published in:
Circuits and Systems II: Express Briefs, IEEE Transactions on
(Volume:58
,
Issue:
10
)
Date of Publication: Oct. 2011
- Page(s):
- 632 - 636
- ISSN :
- 1549-7747
- INSPEC Accession Number:
- 12300810
- Digital Object Identifier :
- 10.1109/TCSII.2011.2164146
- Product Type:
- Journals & Magazines
- Date of Publication :
- 08 September 2011
- Date of Current Version :
- 17 October 2011
- Issue Date :
- Oct. 2011
- Sponsored by :
- IEEE Circuits and Systems Society
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