Calibration procedure of a microwave total-power radiometer

Author

Al-Ansari, K. ; Garcia, P. ; Riera, J.M. ; Benarroch, A. ; Fernandez, D. ; Fernandez, L.

Author_Institution

ETSI Telecomunicacion, Univ. Politecnica de Madrid, Spain

Volume

12

Issue

3

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

93

Lastpage

95

Abstract

A total-power radiometer built in combination with a beacon receiver is being used for low-level attenuation measurements. This experimental receiver was built to measure atmospheric propagation impairments, using the ITALSAT satellite 50 GHz signal. The radiometer is mainly used to provide the reference level for the beacon measurements. Its precision should be better than /spl plusmn/3 K, for low attenuation levels, in order to have 0.1 dB accuracy in the attenuation measurements. A suitable calibration procedure is described.

Keywords

calibration; millimetre wave measurement; millimetre wave propagation; radiometers; 50 GHz; EHF; ITALSAT satellite signal; MM-wave propagation; MM-wave radiometer; MM-wave radiometry; atmospheric propagation impairments; beacon measurements; beacon receiver; calibration procedure; low-level attenuation measurements; microwave radiometer; precision; reference level; total-power radiometer; Atmospheric measurements; Atmospheric waves; Attenuation measurement; Calibration; Microwave propagation; Microwave radiometry; Radio frequency; Receiving antennas; Satellite broadcasting; Temperature sensors;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/7260.989862

Filename

989862