BIW2012 - List of Authors (Zorzut, S.)

Paper	Title	Page
MOPG009	Evaluation of Short and Long-Term Stability of the 2998 MHz Reference-Clock Transfer System	41
	P.L. Lemut, S. Zorzut I-Tech, Solkan, Slovenia B. Batagelj, J. Tratnik University of Ljubljana, Faculty of Electrical Engineering, Ljubljana, Slovenia P.L. Lemut, M. Leskovec COBIK, Solkan, Slovenia
	During the development of the reference clock transfer system, we encountered several issues, related to the slow and fast phase noise measurements. With slow phase noise we consider phase noise with a frequency offset less than 1 Hz from the carrier. On the other hand, for the phase noise measurements in the frequency offset higher than 10 Hz or 100 Hz commercial off the shelf instruments are available. For the slow phase noise measurements we had to either make use of well known methods like correlation method or introduce new ones. Precise and long-term stable phase detector is a representative of the later. Slow phase noise contains periodic and random components. On the contrary to the fast phase noise, a time domain representation of the measured result for the slow phase noise in hundredths of an angular degree or in femtoseconds is more valuable to the user. A phase detector prototype has been carefully designed and its performance has been evaluated. Besides phase difference measurements some extended capabilities have been built in to enable full reference clock transfer system evaluation.

Paper

Title

Page

Evaluation of Short and Long-Term Stability of the 2998 MHz Reference-Clock Transfer System

41

P.L. Lemut, S. Zorzut
I-Tech, Solkan, Slovenia
B. Batagelj, J. Tratnik
University of Ljubljana, Faculty of Electrical Engineering, Ljubljana, Slovenia
P.L. Lemut, M. Leskovec
COBIK, Solkan, Slovenia

During the development of the reference clock transfer system, we encountered several issues, related to the slow and fast phase noise measurements. With slow phase noise we consider phase noise with a frequency offset less than 1 Hz from the carrier. On the other hand, for the phase noise measurements in the frequency offset higher than 10 Hz or 100 Hz commercial off the shelf instruments are available. For the slow phase noise measurements we had to either make use of well known methods like correlation method or introduce new ones. Precise and long-term stable phase detector is a representative of the later. Slow phase noise contains periodic and random components. On the contrary to the fast phase noise, a time domain representation of the measured result for the slow phase noise in hundredths of an angular degree or in femtoseconds is more valuable to the user. A phase detector prototype has been carefully designed and its performance has been evaluated. Besides phase difference measurements some extended capabilities have been built in to enable full reference clock transfer system evaluation.