An investigation into the phase noise of quartz crystal oscillators

[摘要] As secondary objective an introduction to the quantification, theory and measurement of phase noise is presented to make this field of study more accessible for the novice to the field. Available phase noise theory is evaluated at the hand of its application to the design of a low phase noise quartz crystal oscillator.A low phase noise crystal oscillator was designed by application of the presented theory. This oscillator was constructed and measured yielding phase noise low enough to compare favourably with commercially available ultra-low phase noise crystal oscillators. Within the sensitivity of the phase noise measurement equipment good agreement between the theoretically predicted and the measured phase noise was achieved.

[发布机构] Stellenbosch University