Oscillator with reduced phase noise characteristics

Details Oscillator with reduced phase noise characteristics Oscillator with reduced phase noise characteristics

2011-07-12

2011-07-12

Mis, David (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S03600C, C331S1170FE, C331S175000, C331S17700V

Reexamination Certificate

active

07978015

ABSTRACT:
One well known problem associated with voltage controlled oscillators or VCOs is phase noise, and it is desirable to reduce phase noise in order to improve VCO performance. Here, a VCO is provided where gain elements are provided that reduce phase noise. These gain elements are generally comprised of oscillator tanks.

REFERENCES:
patent: 6046647 (2000-04-01), Nelson
patent: 6545555 (2003-04-01), Justice et al.
patent: 6842081 (2005-01-01), Wang et al.
patent: 2002/0130726 (2002-09-01), Mernyei et al.
patent: 2008/0143446 (2008-06-01), Yao et al.
patent: 2008/0150644 (2008-06-01), Hosoya et al.
“A Filtering Technique to Lower LC Oscillator Phase Noise,” IEEE Journal of Solid-State Circuits, vol. 36, No. 12, Dec. 2001, pp. 1921-1930 (Emad Hegazi, Henrik Sjoland, and Asad A. Abidi).

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