Analytical estimation of mutual coupling between antennas on complex three-dimensional construction

The results of developing an analytical approach to estimating the mutual coupling coefficients between two antennas installed on complex three-dimensional construction are considered. The analytical approach used is based on a physical optics method which is always realized when the direct coupling between antennas through their far-field patterns is absent (when the line-of-sight coverage between antennas is overlapped with different obstacles).