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...

Full description

Saved in:
Bibliographic Details
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
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.1968.1126784