DocumentCode
1016987
Title
Extending the Dynamic Range of a Spectrum Monitor Using Comparison Switching and Spectral Averaging
Author
Rogers, Alan E E ; Carter, Joseph C. ; Derome, Mark ; Smythe, D.L.
Author_Institution
Massachusetts Inst. of Technol., Westford
Volume
57
Issue
3
fYear
2008
fDate
3/1/2008 12:00:00 AM
Firstpage
591
Lastpage
594
Abstract
The dynamic range of a spectrum monitor can be extended by incoherently averaging the difference between the spectrum from the antenna and the spectrum from a comparison load. We show that it is often advantageous to increase the attenuation to the spectrum analyzer, thereby lowering the maximum signal strength at the mixer and subsequently compensating for the added noise by incoherent spectral averaging. We analyzed the case of a conventional heterodyne analyzer as well as an analyzer using direct analog-to-digital conversion (ADC) sampling.
Keywords
radio spectrum management; spectral analysers; analog-to-digital conversion sampling; incoherent spectral averaging; signal strength; spectrum analyzer attenuation; spectrum monitor; switching-spectral averaging; Analog-to-digital conversion (ADC); noise measurement; radio spectrum management; radiometry; spectral analysis;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/TIM.2007.911616
Filename
4407732
Link To Document