Characterization of a total power radiometer

Authors : Murat CELEP, Şenel YARAN, Yakup GÜLMEZ, Arif DOLMA

Pages : 870-880

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The performance parameters of a total power radiometer designed as a noise measurement system for the frequency range of 12-18 GHz were investigated. The total power radiometer included a low-noise radio frequency section, a narrow-band intermediate frequency section, an average power detector, and a symmetric microwave switch. The radiometer`s stability versus time was 0.343 \times 10-5 mW/h and its stability against temperature fluctuation was 0.0035 mW/K. The temperature fluctuation of the radiometer was less than 4 mK. We proved that there was no need for active temperature control to obtain stable radiometer gain.
Keywords : Microwave noise, noise measurement, total power radiometer, calibration