Title :
AM noise impact on low level phase noise measurements
Author :
Cibiel, Gilles ; Régis, Myrianne ; Tournier, Éric ; Llopis, Oliver
Author_Institution :
Lab. d´´Autom. et d´´Anal. des Syst., CNRS, Toulouse, France
fDate :
6/1/2002 12:00:00 AM
Abstract :
The influence of the source AM noise in microwave residual phase noise experiments is investigated. The noise floor degradation problem, caused by the parasitic detection of this type of noise by an imperfectly balanced mixer, is solved thanks to a refinement of the quadrature condition. The parasitic noise contribution attributable to the AM to PM (phase modulation) conversion occurring in the device under test is minimized through the development of a dedicated microwave source featuring an AM noise level as low as -170 dBc/Hz at 10 kHz offset from a 3.5 GHz carrier.
Keywords :
amplitude modulation; electric noise measurement; microwave measurement; phase noise; AM to PM conversion; dedicated microwave source; imperfectly balanced mixer; low level phase noise measurements; microwave residual phase noise experiments; noise floor degradation problem; parasitic detection; quadrature condition refinement; source AM noise; Baseband; Ferroelectric materials; Microwave devices; Noise level; Noise measurement; Phase measurement; Phase noise; Semiconductor device noise; Testing; Ultrasonic variables measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2002.1009336
