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

Volume

49

Issue

6

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

784

Lastpage

788

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;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2002.1009336

Filename

1009336