文档介绍：Low Phase Noise, High Bandwidth Frequency
Synthesis Techniques
by
Scott Edward Meninger
Bachelor of Science in Electrical Engineering puter Science
Boston University, June 1996
Master of Science in Electrical Engineering puter Science
Massachusetts Institute of Technology, June 1999
Submitted to the Department of Electrical Engineering puter
Science
in partial fulfillment of the requirements for the degree of
Doctor of Philosophy
at the
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
May 2005
c Massachusetts Institute of Technology 2005. All rights reserved.
Author..............................................................
Department of Electrical Engineering puter Science
May 12, 2005
Certified by. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Michael H. Perrott
Assistant Professor
Thesis Supervisor
Accepted by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Arthur C. Smith
Chairman, mittee on Graduate Students
2
Low Phase Noise, High Bandwidth Frequency Synthesis
Techniques
by
Scott Edward Meninger
Submitted to the Department of Electrical Engineering puter Science
on May 12, 2005, in partial fulfillment of the
requirements for the degree of
Doctor of Philosophy
Abstract
A quantization noise reduction technique is proposed that allows fractional-N fre-
quency synthesizers to achieve high closed loop bandwidth and low output phase
noise simultaneously. Quantization induced phase noise is the bottleneck in state-of-
the-art synthesizer design, and results in a noise-bandwidth tradeoff that typically
limits closed loop synthesizer bandwidths to be <100kHz for adequate phase noise
performance to be achieved. Using the proposed technique, quantization noise is re-
duced to the point where intrinsic noise sources (VCO, charge-pump, reference and
PFD noise) ultimately li