- Turkish Journal of Electrical Engineering and Computer Science
- Vol: 20 Issue: 6
- Characterization of a total power radiometer
Characterization of a total power radiometer
Authors : Murat Celep, Şenel Yaran, Yakup Gülmez, Arif Dolma
Pages : 870-880
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Publication Date : 9999-12-31
Article Type : Makaleler
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