By Topic

Ultimate limitation in the coherence of millimetre wave oscillators due to propagation phase noise

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Vilar, E. ; Portsmouth Univ., UK ; Senin, S. ; Catalan, C. ; McPherson, H

The concepts of propagation phase and fm noise are presented comparing oscillator noise with phase fluctuations introduced by the propagation medium. Numerical values of the spectral density and variance are presented. The experimental apparatus used to measure the noise using Italsat's 40 GHz beacon is surveyed and experimental values of the excess propagation spectral noise observed are presented. The ultimate effect of the propagation phase noise is analysed for its effects in (i) coherence time, (ii) carrier acquisition systems (PLL) and (iii) the effect on MQAM constellations. The possible implications for 20/30 GHz deep space tracking and telecommand are illustrated. The conclusions point towards two orders of magnitude of improvement in on board oscillator short-term stability as worth pursuing

Published in:

Frequency Control Symposium, 1998. Proceedings of the 1998 IEEE International

Date of Conference:

27-29 May 1998