XO-buffer robust to interference

Details XO-buffer robust to interference XO-buffer robust to interference

2006-09-05

2006-09-05

Shingleton, Michael B (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S017000, C331S034000, C257S275000, C257S401000, C330S306000, C327S156000, C327S157000

Reexamination Certificate

active

07102447

ABSTRACT:
Disclosed are methods and circuit configurations for reference frequency signal distribution circuitry that suppress unwanted spurious components introduced by way of RF signal leakage. The methods and circuitry may include relocating components of a buffer along a reference frequency signal path, thereby suppressing conductive and inductive components associated with RF leakage paths entering the circuitry. A filter also may be used after the buffer to suppress spurious components resulting from subsampling of unwanted tones in a phase frequency detector or intermodulation between the reference signal and interference tones in the signal-path of the buffer.

REFERENCES:
patent: 6304091 (2001-10-01), Shahoian et al.
patent: 6784751 (2004-08-01), Salmi et al.
patent: 2004/0251937 (2004-12-01), Yang et al.
patent: 0 160 484 (1985-11-01), None
patent: 0 468 207 (1992-05-01), None
patent: 1 349 268 (2003-10-01), None
patent: 09 162731 (1997-06-01), None
patent: 2002 344286 (2002-11-01), None
patent: WO 01/93418 (2001-12-01), None
patent: WO 2004/023641 (2004-03-01), None
International Search Report for PCT/EP2005/004396 mailed Jul. 13, 2005.
Written Opinion for PCT/EP2005/004396 mailed Jul. 13, 2005.
Möller, M., et al., “15Gbit/s high-gain limiting amplifier fabricated using Si-bipolar production technology,” Electronic Letters, Sep. 1, 1994, vol. 30, No. 18, pp. 1519-1521.
Reimann, R., et al., “Bipolar high-gain limiting amplifier IC for optical-fiber receivers operating up to 4 Gbit/s,” IEEE Journal of Solid-State Circuits, Aug. 1987, vol. 22, No. 4, pp. 504-511.
Eikenbroek, J., et al., “Frequency Synthesis for Integrated Transceivers,” Analog Circuit Design: High-Speed Analog-to-Digital Converters; Mixed-Signal Design; PLL's and Synthesizers, 2000, pp. 339-355.
Lee, T., “The Design of CMOS Radio-Frequency Integrated Circuits,” Cambridge University Press, 1998, Only seven pages covering table of contents submitted.
Razavi, B., “RF Microelectronics,” Prentice Hall, 1998, Only six pages covering table of contents submitted.
D'Azzo, J. et al., “Linear Control System Analysis and Design,” McGraw-Hill Book Company, Second Edition, 1981, Only table of contents submitted.

Affiliated with

Also associated with

Rating

XO-buffer robust to interference does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with XO-buffer robust to interference, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and XO-buffer robust to interference will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3591284