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Estimation of cross polarization of millimeter waves due to rain over few stations in India and its modification incorporating measured values of rain height

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2 Author(s)
Sen, R. ; Sona Coll. of Technol., Tamilnadu, India ; Singh, M.P.

In this paper an attempt has been made to compute cross polarization of millimeter waves in the 30-35 GHz frequency range due to rain. Assuming Laws and Parson's [Laws JO and Parsons DA, 1943] drop size distributions for oblate spheroid drops at 20 /spl deg/C ITU-R method [ITU-R, 1990] has been used to predict depolarization (XPD) for circular polarization. The study includes a number of earth stations in a temperate country like India, namely, Allahabad, Ahmadabad, Bangalore, Calcutta, Delhi, Gangtok, Jodhpur, Madras, Nagpur and Trivandrum. Variations of co-polar attenuation with XPD ha been shown. Cumulative time distribution of XPD has also been presented. The study reveals that cross polarization depends on frequency, path elevation angle, co-polar attenuation and rainfall rate.

Published in:

Antennas, Propagation and EM Theory, 2003. Proceedings. 2003 6th International SYmposium on

Date of Conference:

Oct. 28 2003-Nov. 1 2003