DocumentCode
2879050
Title
Measurement of the Amplitude and Phase of FM Noise Currents on a Personal Computer Chassis
Author
Marubashi, Masayuki ; Ogata, Asahi ; Fujii, Katsumi ; Matsumoto, Yasushi ; Sugiura, Akira
Author_Institution
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai
fYear
2006
fDate
1-4 Aug. 2006
Firstpage
218
Lastpage
221
Abstract
IT equipment mostly uses dithered clocks, radiating FM noise especially in the frequency range above 1 GHz. Investigations are carried out to measure the noise source current flows on a PC chassis. Since network analyzers are useless for measurement of FM noises, a six-port junction is developed and used with a pair of loop antennas. This instrument can display current flows of PC harmonic noises
Keywords
amplitude modulation; loop antennas; microcomputers; noise; pulse frequency modulation; FM noise currents; IT equipment; amplitude modulation; loop antennas; personal computer chassis; phase modulation; six-port junction; Antenna measurements; Clocks; Current measurement; Frequency; Instruments; Microcomputers; Noise level; Noise measurement; Phase measurement; Phase noise;
fLanguage
English
Publisher
ieee
Conference_Titel
Environmental Electromagnetics, The 2006 4th Asia-Pacific Conference on
Conference_Location
Dalian
Print_ISBN
1-4244-0183-6
Type
conf
DOI
10.1109/CEEM.2006.257940
Filename
4027272
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