Title
More On The Impulse Sensitivity Functions Of Cmos Differential Lc Oscillators
Abstract
The effective ISFs of differential LC oscillators are derived under the assumption that the drain-to-source current is linearly dependent on the gate-to-source voltage for transistors operated in saturation. Moreover, a new interpretation of phase noise is given by examining the real vector diagram of the carrier signal, upon which the noise voltage induced by the impulse noise current is superimposed. The distinct feature of our vector diagram lies in that the noise voltage is always parallel with the horizontal axis. From the Fourier transformations of the derived effective ISFs, the phase noise of differential LC oscillators can be formulated with physical meanings in the frequency domain. The proposed theory can well describe the translation of the noise spectra when the noises from the LC-tank, the switching transistors, and the tail current source are converted into the phase noise. Theoretical predictions from our formulas agree well with the simulation results.
Year
DOI
Venue
2011
10.1587/transfun.E94.A.1671
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Keywords
DocType
Volume
CMOS, impulse sensitivity functions, LC oscillators, phase noise
Journal
E94A
Issue
ISSN
Citations 
8
0916-8508
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Shey-Shi Lu113328.72
Hsiao-Chin Chen25014.74
Shih-An Yu313120.71