Title :
Improved interferometric method to measure near-carrier AM and PM noise
Author :
Rubiola, E. ; Giordano, V. ; Groslambert, J.
Author_Institution :
Politecnico di Torino, Italy
Abstract :
An improved version of the interferometric method to measure near-carrier AM and PM noise is being presented. The main feature of this scheme is its capability to reduce the instrument noise by correlating the output of two equal interferometers, thus enhancing the sensitivity. The method, microwave band implementation and experimental results are discussed.
Keywords :
1/f noise; correlation methods; electric noise measurement; flicker noise; microwave amplifiers; microwave measurement; radiowave interferometry; thermal noise; double interferometer prototype; enhanced sensitivity; improved interferometric method; instrument noise reduction; microwave band implementation; near-carrier AM noise; near-carrier PM noise; noise measurement; output correlation; 1f noise; Attenuation; Attenuators; Bandwidth; Interferometers; Microwave amplifiers; Noise figure; Noise measurement; Phase shifters; Power amplifiers;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.700108
