A new definition of mutual impedance for application in dipole receiving antenna arrays

Abstract—A new definition of mutual impedance for two dipole antennas is introduced to characterize the mutual coupling effect between two dipole antennas in a more accurate manner. The cal-culation method and the measurement procedure for the new mu-tual impedance are given. Measurement and theoretical results on two monopole antennas were obtained as an example. The suc-cessful applications of the new mutual impedance in the compensa-tion of mutual coupling effect in direction finding and adaptive in-terference suppression with significantly improved results showed the importance of the new mutual impedance. Index Terms—Dipole array, mutual coupling, mutual impedance. I