Title :
Atmospheric Attenuation of 400 GHz Radiation Due to Water Vapor
Author :
Weber, Marcus J. ; Yang, Benjamin B. ; Kulie, Mark S. ; Bennartz, Ralf ; Booske, John H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Wisconsin-Madison, Madison, WI, USA
fDate :
5/1/2012 12:00:00 AM
Abstract :
We present an experimental study of electromagnetic losses resulting from atmospheric attenuation due to water vapor on 400 GHz radiation. A hermetically sealed, high quality factor quasi-optical resonator system permits the precise control of the atmospheric water vapor content, and allows for measurement of electromagnetic losses. The empirically determined losses are compared with predictions by various different electromagnetic attenuation models. Close agreement is demonstrated with four of the models, while another differs by more than an order of magnitude at higher values of water content.
Keywords :
atmospheric electromagnetic wave propagation; atmospheric humidity; hermetic seals; optical losses; optical resonators; submillimetre wave propagation; terahertz waves; GHz radiation; atmospheric water vapor content; electromagnetic attenuation models; electromagnetic losses; hermetically sealing; magnitude order; quality factor; quasioptical resonator system; water vapor; Atmospheric measurements; Atmospheric modeling; Atmospheric waves; Attenuation; Attenuation measurement; Educational institutions; Temperature measurement; Atmospheric electromagnetic attenuation; quality factor; resonator; terahertz (THz); water vapor;
Journal_Title :
Terahertz Science and Technology, IEEE Transactions on
DOI :
10.1109/TTHZ.2012.2189909
