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A 40 GHz Differential Push-Push VCO in 0.18 
CMOS for Serial Communication
A 40 GHz Differential Push-Push VCO in 0.18
A 40 GHz differential CMOS push-push VCO is proposed for high-frequency applications. It is shown analytically that the phase noise of the VCO output at the full-rate frequency is close to 6 dB higher than that of the half-rate frequency. The result of the phase noise analysis is verified by simulations and measurements. A phase noise of - 101 dBc/Hz was achieved at 1 MHz offset frequency. The proposed push-push VCO design enables higher VCO frequency operation with differential output, which is suitable for millimeter wave frequency synthesizers.
Published in:
Microwave and Wireless Components Letters, IEEE
(Volume:19
,
Issue:
11
)
Date of Publication: Nov. 2009
- Page(s):
- 725 - 727
- ISSN :
- 1531-1309
- INSPEC Accession Number:
- 10957749
- Digital Object Identifier :
- 10.1109/LMWC.2009.2032016
- Product Type:
- Journals & Magazines
- Date of Publication :
- 20 October 2009
- Date of Current Version :
- 03 November 2009
- Issue Date :
- Nov. 2009
- Sponsored by :
- IEEE Microwave Theory and Techniques Society
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