MODELING AND MEASUREMENTS OF THE DIFFRACTION OF MICROWAVES BY BUILDINGS

The growth of urban microwave systems has led to an increase in the pr obability of mutual interference between users of the same frequency b and. A building which obstructs the interference path will generally l ead to a reduction in the strength of the interfering signal. A method is presented whereby the amount of site shielding afforded by a recta ngular building may be predicted, considering two-dimensional and thre e-dimensional paths. Predictions are compared with measurements made u sing real buildings as the diffracting obstacle at a frequency of 11.2 GHz.