Characterization of a total power radiometer


Celep M., Yaran S., Gulmez Y., DOLMA A.

TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES, cilt.20, ss.870-880, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 20 Konu: 6
  • Basım Tarihi: 2012
  • Doi Numarası: 10.3906/elk-1010-847
  • Dergi Adı: TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES
  • Sayfa Sayısı: ss.870-880

Özet

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 x 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.