The Effect of Snow on a Terahertz Wireless Data Link
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The importance of the effects of weather on the transmission of high frequency signals has been recognized for some time . As carrier frequencies increase from RF to millimeter-wave to terahertz, the impact of adverse weather conditions on wireless data links is expected to become substantially more pronounced. At lower frequencies, these effects are typically dominated by attenuation due to molecular absorption . However, at higher frequencies, as the wavelength approaches the size of dust, rain, or snow particles, the effects of Mie scattering are expected to become more significant, representing an important contribution to link budget calculations. Yet, few experimental studies have been reported in the terahertz range, particularly for the case of outdoor tests in adverse weather conditions which may pose a threat to sensitive measurement equipment. Ma and Federici have described controlled weather chamber measurements for modulated data links for a few simulated situations...
This study was funded in part by the W. M. Keck Foundation and the US National Science Foundation.
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