Title :
Wide-Band Heterodyne-Radiometer with Fast Frequency-Switching Local Oscillator for Electron Cyclotron Emission Diagnostics
Author :
Wataya, Y. ; Idei, Hiroshi ; Inagaki, Shun ; Shimozuma, Takashi ; Nagayama, Y. ; Kawahata, K.
Author_Institution :
Kyushu Univ., Kasuga
Abstract :
In the report, a backward wave oscillator (-100 GHz) was used as a local oscillator. In this work, a fast-switching local oscillator part in lower frequency range was built for higher time resolution. The lower frequency becomes wide-band in millimeter-wave range (-100 GHz) using millimeter multipliers. The local-frequency part plays an important role to determine the frequency switching-time, step-width and total range in the ECE measuremt. The frequency switching of the lower local-frequency part is mainly discussed in this report.
Keywords :
heterodyne detection; plasma devices; plasma diagnostics; plasma temperature; radiometers; backward wave oscillator; electron cyclotron emission diagnostics; frequency switching; heterodyne radiometer; Cyclotrons; Electron emission; Frequency measurement; Frequency synthesizers; Local oscillators; Plasma diagnostics; Plasma measurements; Plasma temperature; Radiometry; Wideband;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368709
