Title :
The Precise Microwave Resonator Spectroscopy of Gases and Condensed Media
Author_Institution :
Inst. of Appl. Phys. of Russian Acad. of Sci., Nizhny Novgorod
Abstract :
In this paper, it was shown that reflectivity of reflector surfaces depends on the quality of thin metal reflecting layers and their coating. The influence is of course relatively larger for high reflective metals because of the smaller skin-depth. Results presented in this paper show low reflection loss for Planck reflector technology and very reasonable reflection losses for a metalized carbon fiber reinforced plastic (CFRP) technology. The latter technology has been measured at low temperature (liquid N2) and it is of interest to observe more than an expected factor ´2´ reduction in reflection loss. The importance of measurement of reflection loss has been discussed and the results presented or referred to in this paper confirm such a need.
Keywords :
carbon fibre reinforced plastics; microwave spectrometers; reflectivity; resonators; spectrochemical analysis; C; CFRP; Planck reflector technology; microwave resonator spectroscopy; reflection loss; reflectivity; reflector surfaces; thin metal reflecting layer; Absorption; Atmosphere; Atmospheric measurements; Extraterrestrial measurements; Frequency synthesizers; Gases; Nitrogen; Reflectivity; Spectroscopy; Temperature sensors;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves and Workshop on Terahertz Technologies, 2007. MSMW '07. The Sixth International Kharkov Symposium on
Conference_Location :
Kharkov
Print_ISBN :
1-4244-1237-4
DOI :
10.1109/MSMW.2007.4294570