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A 0.18 mum CMOS quadrature voltage-controlled oscillator with an extremely-low phase noise is presented. The excellent phase noise performance is accomplished by integration of the back-gate quadrature phase coupling and source resistive degeneration techniques into a complementary oscillator topology. The measured phase noise is as low as -133 dBc/Hz at 1 MHz offset from 3.01 GHz. The output phase imbalance is less than 1deg . The output power is -1.25plusmn 0.5 dBm and harmonic suppression is greater than 30.8 dBc. The oscillator core consumes 5.38 mA from a 1.5 V power supply. This QVCO achieves the highest figure-of-merit of -193.5 dBc/Hz.
Published in:
Microwave and Wireless Components Letters, IEEE
(Volume:19
,
Issue:
6
)
Date of Publication: June 2009
- Page(s):
- 398 - 400
- ISSN :
- 1531-1309
- INSPEC Accession Number:
- 10714143
- Digital Object Identifier :
- 10.1109/LMWC.2009.2022584
- Product Type:
- Journals & Magazines
- Date of Publication :
- 26 May 2009
- Date of Current Version :
- 05 June 2009
- Issue Date :
- June 2009
- Sponsored by :
- IEEE Microwave Theory and Techniques Society
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