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Investigation of attenuation by rainfall at 60 GHz

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2 Author(s)
Humpleman, R.J. ; University of Bradford, Postgraduate School of Electrical & Electronic Engineering, Bradford, UK ; Watson, P.A.

Attenuation at 60 GHz is investigated on a 680 m vertically polarised link, with two fast-response raingauges and a dystrometer. Variations in attenuation for a given ground rainfall intensity are seen to be caused by drop-size variations. This conclusion is reached after conversion of point rainfall rates to path rainfall rates using a synthetic storm model, when the resultant variation of attenuation with path rainfall rate is seen to follow relationships predicted from the dystrometer. Nevertheless, on the average, the Laws/Parsons drop-size distribution is seen to be remarkably good for predicting attenuation from ground rainfall rates. Fading for one year was in excess of 15 dB for 10¿3% of the time. By inference, radio paths of 2 to 3km should thus be possible at 60GHz in the UK.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:125 ,  Issue: 2 )