DocumentCode
1421135
Title
Ratio of Gaussian PIM to two-carrier PIM
Author
Boyhan, J.W.
Author_Institution
Telstar Program Office, Loral Skynet, Bedminster, NJ, USA
Volume
36
Issue
4
fYear
2000
fDate
10/1/2000 12:00:00 AM
Firstpage
1336
Lastpage
1342
Abstract
Passive intermodulation (PIM) products falling into a satellite´s receiver can adversely affect its gain/system temperature (G/T). The PIM when all carriers are active and modulated, can be simulated by a flat power spectrum. The ratio of the resulting distortion to a two-carrier measurement is calculated in this work. For PIM not to degrade the satellite´s G/T, it should be 20 dB or more below thermal noise over the expected thermal range, which can be achieved in most cases.
Keywords
Gaussian distribution; intermodulation distortion; satellite links; thermal noise; Gaussian PDF; Gaussian passive intermodulation; Rayleigh PDF; antenna gain/system temperature; below thermal noise; distortion power; flat power spectrum; linear input power; narrowband signals; passive intermodulation products; satellite receiver; two-carrier measurement; two-carrier passive intermodulation; wideband signals; Antenna measurements; Bandwidth; Distortion measurement; Frequency; Polarization; Receiving antennas; Satellites; Temperature; Testing; Transponders;
fLanguage
English
Journal_Title
Aerospace and Electronic Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9251
Type
jour
DOI
10.1109/7.892681
Filename
892681
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