A Microwave System for Measurements of AM and FM Noise Spectra

This paper describes a noise measuring system with a high degree of flexibility in regard to video frequency coverage as well as radio frequency coverage. Noise systems for S, X, and Ku-bands were constructed to obtain high sensitivity at spectral frequencies from several Hz to 30 MHz off the carrie...

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Published inIEEE transactions on microwave theory and techniques Vol. 16; no. 9; pp. 767 - 781
Main Author Ondria, J.G.
Format Journal Article
LanguageEnglish
Published IEEE 01.09.1968
Subjects
Bandwidth
Doppler radar
Fluctuations
Frequency measurement
Low-frequency noise
Microwave measurements
Noise measurement
Power measurement
Radio frequency
Strips
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Abstract This paper describes a noise measuring system with a high degree of flexibility in regard to video frequency coverage as well as radio frequency coverage. Noise systems for S, X, and Ku-bands were constructed to obtain high sensitivity at spectral frequencies from several Hz to 30 MHz off the carrier. The measured limiting sensitivities of the X-band set over the video range 20 Hz to 325 kHz with an input power of 10 mW are --145 dB for AM noise and 0.02 Hz rms for FM noise in a 100-Hz measuring bandwidth.
AbstractList This paper describes a noise measuring system with a high degree of flexibility in regard to video frequency coverage as well as radio frequency coverage. Noise systems for S, X, and Ku-bands were constructed to obtain high sensitivity at spectral frequencies from several Hz to 30 MHz off the carrier. The measured limiting sensitivities of the X-band set over the video range 20 Hz to 325 kHz with an input power of 10 mW are --145 dB for AM noise and 0.02 Hz rms for FM noise in a 100-Hz measuring bandwidth.
Author Ondria, J.G.
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Cites_doi 10.1109/T-ED.1954.14029
10.1063/1.1697828
10.1109/TMTT.1961.1125363
10.1109/JRPROC.1944.232049
10.1109/JRPROC.1922.219793
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Snippet This paper describes a noise measuring system with a high degree of flexibility in regard to video frequency coverage as well as radio frequency coverage....
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SubjectTerms Bandwidth
Doppler radar
Fluctuations
Frequency measurement
Low-frequency noise
Microwave measurements
Noise measurement
Power measurement
Radio frequency
Strips
Title A Microwave System for Measurements of AM and FM Noise Spectra
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