Effects of Ground Constituent Parameters on ArrayMutual Coupling for DOA Estimation

[摘要] Effects of ground constituent parameters on the mutual coupling (MC) of monopole antenna array are investigated. This workaugments an existing MC compensation technique for ground-based antennas and proposes reduction in mutual coupling forantennas over finite ground as compared to the perfect ground. The work is investigated by finite element method analysis, andnumerical results are presented. A factor of 4 decrease in both the real and imaginary parts of the mutual coupling is observedwhen considering a poor ground versus a perfectly conducting one, for quarter-wave monopoles in receiving mode. A simulated resultto show the errors in direction-of-arrival (DOA) estimation with actual realization of the environment is also presented.

[学科分类] 电子、光学、磁材料