Amplifiers – With semiconductor amplifying device – Including plural stages cascaded
Reexamination Certificate
2006-01-30
2008-08-19
Nguyen, Khanh V (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including plural stages cascaded
C330S165000, C330S253000
Reexamination Certificate
active
07414481
ABSTRACT:
Embodiments of the present invention include a common-gate amplifier having an input terminal and an output terminal, a transistor having a source, a drain, and a gate, four inductors, and two capacitors, and a negative amplification circuitry. The negative amplification circuitry has an input terminal to receive an RF signal. The negative amplification circuitry applies negative or zero amplification to the RF signal and outputs the negative or zero amplified signal on an output terminal. Alternative embodiments include a Colpitts differential oscillator, which includes two Colpitts single-ended oscillators. Each Colpitts single-ended oscillator includes a transistor. The source of the transistor in one Colpitts single-ended oscillator may be capacitively coupled to the gate of the transistor in the other Colpitts single-ended oscillator.
REFERENCES:
patent: 5450038 (1995-09-01), Rydel
patent: 6271721 (2001-08-01), Trask
Rofougaran, A. et al., “A 900MHz CMOS LC-Oscillator with Quadrature Outputs,” 1996 IEEE International Solid-State Circuits Conference, pp. 392-393.
Shaeffer, D.K. et al., “A 1.5-V 1.5-GHz CMOS Low-Noise Amplifier,” IEEE J. of Solid-State Circuits, vol. 32, No. 5, pp. 745-759, May 1997.
Hajimiri, A. et al., “A General Theory of Phase Noise in Electrical Oscillators,” IEEE J. of Solid-State Circuits, vol. 33, No. 2, pp. 179-194, Feb. 1998.
Huang, Q. et al., “The Impact of Scaling Down to Deep Submicron on CMOS RF Circuits,” IEEE J. of Solid-State Circuits, vol. 33, No. 7, pp. 1023-1036, Jul. 1998.
Razavi, B., “RF Microelectronics,” Prentice Hall, pp. 37-48, 1998.
Lee, T.H., “The Design of CMOS Radio Frequency Integrated Circuits,” Cambridge, pp. 77-86, 1998.
Allstot, D.J., “Short Course: Low Noise Amplifiers,” IEEE International Solid State Circuit Conference, 2001.
Cheng, Y. et al., “High-Frequency Small Signal AC and Noise Modeling of MOSFETs for RF IC Design,” IEEE Transactions on Electron Devices, vol. 49, No. 3, pp. 400-408, Mar. 2002.
Andreani, P. et al., “Analysis and Design of a 1.8-GHz CMOS LC Quadrature VCO,” IEEE J. of Solid-State Circuits, vol. 37, No. 12, pp. 1737-1747, Dec. 2002.
Ismail, A. et al., “CMOS Differential LC Oscillator with Suppressed Up-Converted Flicker Noise,” 2003 IEEE International Solid-State Circuits Conference, pp. 98-99.
Li, X. et al., “Gm-Boosted Common-Gate LNA and Differential Colpitts VCO/QVCO in 0.18-μm CMOS,” IEEE J. of Solid-State Circuits, vol. 40, No. 12, pp. 2609-2619, Dec. 2005.
Allstot David J.
Li Xiaoyong
Blakely , Sokoloff, Taylor & Zafman LLP
Nguyen Khanh V
University of Washington
LandOfFree
Receiver with colpitts differential oscillator, colpitts... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Receiver with colpitts differential oscillator, colpitts..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiver with colpitts differential oscillator, colpitts... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4003992