1-10. Coefficients for the aRº relationship for rain attenuation are given in the following table for various frequencies: Frequency GHz 12 0.0215 1.136 15 0.0368 1.118 20 0.0719 1.097 30 0.1860 1.043 40 0.3620 0.972 Compute the rain attenuation per kilometer for the following combinations of rain rate and carrier frequency: (a) f=12 GHz; R = 1 mm/h (light rain) (b) ƒ= 40 GHz; R = 1 mm/h (c) f=12 GHz; R= 25 mm/h (heavy rain) (d) f=40 GHz; R = 25 mm/h (e) f=20 GHz; R 10 mm/h (moderate rain)

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